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The Best Marine Varnish: Exterior Wood Finish Tests

Two-part varnishes leading in durability as long-term test reaches 24-month mark..

Like spotting land after a long passage, were glad to say that the end of our long-term exterior wood finishes test is finally on the horizon. Time, weather, and Southwest Floridas unrelenting sunshine have clearly taken their toll on the test panels over the last 24 months, and as the evaluation moves into its third year, only 19 of the original 54 test products will continue on in our survival-of-the fittest finish matchup. Given that most wood coatings are rarely expected to last longer than two years in the marine environment-particularly in super-sunny locales-its no surprise that we’ve seen more significant changes in the coatings in the last six months than we had in previous checkups.

Our search for the ideal wood finish-relatively easy to apply, easy to maintain, lasts multiple seasons, and is affordable-began in 2007 when we took a look at the different types of exterior wood finishes on the market, their pros and cons, and how easy they were to apply ( one-part varnishes , August 2007; varnish alternatives , October 2007; two-part varnishes , December 2007; teak oils and stains , April 2008). Launched in 2008, the long-term panel test aimed to determine which type of coating offers the best and longest protection and which products stand out among their peers.

We hope the comparison enables readers to decide which finish best matches their own taste, potential labor investment, and wood protection needs.

We’ve rated the test products every six months and reported on the coatings durability in the May 2009 issue ( six-month checkup ), December 2009 issue ( 12 months ), and January 2011 ( 18 months ) issues. Here, we offer the two-year report on the survivors.

How We’re Testing the Marine Varnishes

Testers applied dozens of exterior wood finishes (22 one-part varnishes, six two-part varnishes, 18 synthetics and satins/varnish alternatives, and eight teak oils and sealers) to small panels of bare solid teak. Each was assigned a number for blind judging and was applied per manufacturers instructions. If makers gave a range for the number of coats to apply, testers went with the minimum.

Initial testing rated each products ease of application and original gloss and reflective qualities. In the summer of 2008, the test panels were mounted on a wooden rack (aka: The Rack), which was set up in an unobstructed area on the roof of the PS workshop in Sarasota, Fla., to ensure that all panels received the same amount of weather exposure. The top part of each panel was covered to create a control area that testers used for comparison over time. Every six months, we disassembled The Rack and rated the panels on how well their coating integrity, gloss, and color had fared over time with constant exposure to the elements.

The test was designed as an endurance test, a fight to the finish, so we have not done any maintenance coats or touch-ups to the test panels. These products can be expected to have much longer lifespans if they are regularly maintained.

How We’re Rating the Marine Varnishes

Testers rate each panel on three long-term performance criteria: coating integrity, gloss retention, and color retention. Excellent and Good coating integrity ratings mean that no maintenance is needed; a Fair indicates that its time for a maintenance coat; Poor means the fat lady has sung, and the coating would need to be removed and re-applied. Excellent ratings are given only to those with an uncompromised coating. This time, panels with Poor and Fair- coating integrity were pulled from the test.

Color and gloss retention ratings are relative to the panels original finish. Initial gloss and ease of application are relative to the field within each coating category; these were assigned immediately after the panels were coated.

It was tougher to pick Recommended coatings at the two-year mark, as most wood finishes aren’t intended to go that long without maintenance. One-part varnishes that earned PSs recommendation this go-round were rated Fair for coating integrity (none rated better than Fair ) and had no Poor ratings. Recommended two-part systems rated Good or better for coating integrity with no Poor ratings. No varnish alternatives or teak oils/sealers were recommended at two years.

VALUE GUIDE: Varnish Alternatives

What we found.

What a difference a season makes! With the exception of a few two-part products, the test coatings had lost their sparkle at the two-year mark. Ratings slipped across the board. The UV abuse had obviously taken its toll, sucking the life out of most of the coatings, particularly the clear finishes.

Those clinging to life with Fair coating integrity are still protecting the wood, but they’ve lost their looks. In the real world, all of the one-part varnish and varnish alternative test panels would be due for a maintenance coat, and some-like HMG K Type Varnish, West Marine WoodPro Plus (rebranded Epifanes Rapidclear), and Ace Spar Varnish-would be overdue.

The biggest overall decline was within the one-part varnish test group: Not a single one rated better than Fair for coating integrity or gloss retention, and nearly half of the test field was retired after this rating round. Just six months before, eight of the 19 products rated Good for coating integrity and six rated Good for gloss retention. In 12 months, seven dropped from an Excellent coating integrity to a Fair.

The one-part varnishes offering the most protection after two years are Detco Crystal, Le Tonkinois Vernis, and Pettits Z-Spar Captains 2067. However, their extended protection comes with tradeoffs: Detco rated only Fair for application, Le Tonks gloss started to slip after one year, and Pettits 2067 started losing its original color after 12 months.

One hardware store varnish has surprisingly held its own over the long haul: Minwax Helmsman Spar Urethane. At half the cost of the Recommended one-part varnishes, Minwax slacked in the color retention department, but it has proven its multi-season durability.

Four of the nine varnish alternatives have been voted off The Rack after two years, and none performed well enough to earn our recommendation for two-year wood protection.

The Cetol products are still at the head of the pack, albeit a somewhat mangy-looking pack. The cloudy, opaque look of the Cetol Marine and Marine Light products may not appeal to everyone, but the fact they’ve maintained their color for more than a year is a good example that higher-solids finishes tend to offer better UV protection.

The Cetol Natural (with gloss) test panel fell from a Good coating integrity six months ago to being dropped from testing. Its performance mirrors what we’ve seen in the field: Give it a little loving once a year with a scrubby pad and a fresh coat, and it’ll last the long haul.

Its taken two years, but the two-part varnishes are finally starting to show their age. Surprisingly, the first products to be dropped from this group are two that performed well in past PS tests: Bristol Finish and Honey Teak. This is likely because the life of a wood finish in Florida is always going to be shorter than in our past test locales in New England.

The other two-parts are still holding up well, with Interlux Perfection and Nautiking Nautithane offering uncompromised protection and better-than-expected gloss after 24 months. Perfection has been reformulated since the test began and is now sold as Perfection Plus.

The temporarily discontinued (since 2009) Smiths Five Year Clear has also proven to be a top-notch finish, but its not available at this time.

While HMG Acrythane XSC didn’t earn our Recommendation this time, it was a top 18-month finish, it still looks good, and it costs less than the Nautithane.

Conclusions About Exterior Varnishes

After two years of testing, we’ve come to accept that perhaps there’s no Holy Grail of exterior wood finishes. It would appear, unfortunately, that we can’t have it all: easy to apply, easy to maintain, long-lasting protection, and a budget-friendly price tag. The reality is that, like much in life, wood protection is all about compromise and balancing your needs with your wants.

There’s no one-size-fits-all solution, and the boat owner who finds gratification in the wet, glossy look of a two-part varnish borne of painstaking preparation and careful application will weigh our test data much differently than the one who regards brightwork maintenance as a masochistic endeavor. For the latter, we recommend seeking out a varnish alternative (easy to apply, easy to maintain) that suits your tastes. With modest maintenance, the Cetol products with gloss overcoats have proven to be the most durable.

For areas where slippery-when-wet coatings wont do, Cetol Natural (without gloss overcoat) or our top-pick teak oil, Star brites Tropical Teak Sealer (classic teak) should be considered. The Star brite will need to be reapplied every three or four months.

If you’re looking for a harder, more abrasion-resistant finish that’ll make it past the year mark, check out the top one-part varnishes like Detco Crystal or Pettits Z-Spar Captains 2067. Boat owners in sailing areas that see less sunshine than our Florida test site should also consider Pettits Flagship 2015 or Captains 1015. One-part varnishes require a little more work upfront and quick attention when they are scratched or dinged, but they also offer a more traditional, high-gloss look. The one-part varnishes in our test slipped dramatically after a year and half, so we suggest an annual maintenance coat, whether they look like they need it or not.

As this test has shown, when it comes to long-lasting protection and gloss, two-part varnishes just can’t be beat. They may be a pain to apply-and should you let the coating fail, you had better invest in a heat gun-but their durability is unmatched.

The top two-part after two years of testing was Interlux Perfection. Because we’ve not yet tested the reformulated Perfection, the top pick honors go to Nautikings Nautithane. While its price tag ($120 per quart kit) is a bit hard for most of us to swallow, Nautithane earned across-the-board Good ratings after two years.

Practical Sailor often supplements panel testing with product challenges aboard our test boats to see whether top products still earn their keep in the real world and to try out new products. Two such evaluations are our exterior wood finish tests.

In the January 2011 issue, we introduced a head-to-head matchup of varnish alternatives—market-newcomer PolyWhey from Vermont Natural Coatings versus perennial favorite Interlux’s Sikkens Cetol Natural Teak—that had been applied to our Cape Dory 25 test boat. For that test, we’ve just let nature run its course: no band-aid touchups, no maintenance coats, no freshwater rinses, no TLC at all.

Comparatively, we’ve been testing Cetol Natural aboard our Chesapeake Bay-based Union 36 test boat, where it was laid on with the Cetol gloss overcoat in 2008; in this evaluation, testers have applied annual maintenance coats and given the coating regular TLC. Here’s the latest on both of these tests:

PolyWhey vs. Cetol Death Match

In the fall of 2010, testers applied three coats of Caspian Clear PolyWhey to the coamings and companionway trim on the Cape Dory, which is sailed several times a week and lives on a mooring in Sarasota Bay, Fla. We also applied Cetol Natural to the boat’s toerail, and previously had applied it to the tiller and forward hatch trim.

PolyWhey is a unique wood finish that uses whey protein, a by-product of the cheesemaking process, as a binder. It’s touted as a more eco-friendly and more sustainable coating than petroleum-based polyurethanes, which can have up to 75 percent more volatile organic compounds (VOCs).

Consistently among the top varnish alternatives in PS’s tests, Cetol Natural is not as muddy-looking as its predecessors, Cetol Marine Light and Cetol Marine—like the Caspian Clear, it allows the wood’s natural grain to show and has a low gloss.

As far as application, both the Cetol and PolyWhey are quick and easy to apply, with much shorter recoat times than hard varnishes and less (or no) sanding between coats. The main difference that we found in these two finishes was with durability.

The PolyWhey turned out to be a much softer coating than the Cetol. It held up for about two months, but after three months, it was in need of a recoat, and at six months, it needed a total takedown—and Cetol had emerged as the death-match victor.

The PolyWhey on the coaming was the first to go: Where crew backs often lean against the wood, the finish was all but gone after four months. The PolyWhey on the companionway slides held on for about that long, but by six months, they were ready for a do-over as well.

The Cetol on the toerail was in need of a few touchups after six months, mostly in areas where fenders and docklines came in contact with it. But the tiller and hatch trim were still fairly well-protected almost a year after application. Although we’d recommend a maintenance coat at this point, testers plan to see how many more months we can eek out of the coating before we reach the point of no return.

Bottom line : We applaud VNC’s efforts to offer a “green” wood finish—and their creative recycling of dairy industry “trash”—but we can’t recommend it over Cetol for an exterior coating in the marine environment.

Cetol with Overcoat

Testers applied three coats of Cetol Natural with Cetol Marine Gloss overcoat to the Union in March 2008. Once a year, we scuff it up with a 3M pad, give it a freshwater rinse, and brush on a maintenance coat.

Compared to a clear, glossy varnish, it looks decent and the maintenance regimen is more realistic for our tastes and available time. However, one downside to softer, varnish alternative coatings—even those with an overcoat—is that they don’t stand up as well as hard finishes to dings and abrasion. Example: The Union’s toerail has one place in need of touching-up where a fender line wore away the finish. (See photo above.)

Bottom line : The Cetol Natural with overcoat has held up very well. While applying the topcoat may mean added effort, both our panel tests and test-boat evaluations have shown that the coating will last much longer and need fewer bandaids if the soft Cetol is protected with the semi-hard topcoat.

Teak oils and other naturally based finishes like PolyWhey, need maintenance coats every few months. Their chemical cousins, however, like Cetol, have proven they can offer good protection with only annual nurturing and the occasional touchup.

• C-Tech Marine (Bristol)
• Deft Finishes
• Le Tonkinois
• Premapro (Coelan)
• Signature Finishes
• Smith’s Five Year Clear
• Vermont Natural Coatings
• West Marine
• Woodplus Marine

RELATED ARTICLES MORE FROM AUTHOR

17 comments.

I’m surprised you didnt include Alwood from Awlgrip

Search Awlwood on the website. We have a couple reports. October 2014 (chandlery), and June 2015 issues. Download the PDFs, because the tables haven’t been loaded online yet. It is broadly comparable to Sikkens Cetol.

opps, Awlwood not alwood

All very interesting……The “bottom line” is just flush the line in fresh water.

Thank you for the great info. I am going order year of Practical Sailor.

What is your opinion of covering a 2 part varnish with a one part?

It is certainly a comprehensive test. I’ve taken the journey of sticking with one of your “good” one part varnishes, Epiphanes Wood Finish gloss 10 coats with Epiphanes final two matte finishes. I’ve been quite impressed with it over the past 8 years on both my Cape Dory Typhoon and my Alberg 30. My conclusion is, read your directions carefully and be patient through all phases of application. Teak requires a caregiver! Great read especially during this pandemic period.

Great review. Your test is useful for me because I want to buy but dont know which product is the best. I must say that I like all of those mentioned above and price is really cheap. It’s always good to hear other input.

You missed out Pettit’s Gold, a water-based varnish. I have used it, and it’s great. For long life? Too soon to tell. Cetol has mostly been a disaster, especially with the Gloss overcoat. Applying Cetol can be tantamount to vandalism.

That’s really nice post. I appreciate your skills. Thanks for sharing.

Did you continue with testing to date, I am after a product that want yellow or bloom because of constant direct sunlight. I am in the North West of Australia where the temp at it’s coolest is 30+ Celsius for a couple of months and peeks over 50 + Celsius for a lot more than the couple of cooler months.

I use Rust-Oleum 207008 Spar Varnish. So much better than those water-based varnishes. This stuff protects almost forever. We used to use this kind of spar varnish in the Navy to protect the woodwork exposed to salty air.

The Interlux Varnish became my favorite varnish on teak fixtures when I tried it out 2 years ago. This is because of the immense difference it makes in the way it lends my pulpit or anything made of teak with a sophisticated, good-as-new finish.

It’s strange that you call out Pettit Z-Spar Captains 2067 as a top performer in the conclusions, but it’s not shown in the chart. Those Pettit products that are included in the chart don’t appear to be top performers. I’m confused.

After less than a year the Bristol finish I used on my boat looks terrible and will have to be removed. The folks at Bristol are absolutely no help at all. Their disclaimer is that they know nothing about boats. I most strongly advise against using this product for marine application. I have photos taken immediately after application, two months after, and eight months after if anyone is interested. By the way, the problem manifested on well prepped old teak and well prepped new teak. Could have just been a bad batch of finish but as I said, the folks at Bristol were no help. I ADVISE AGAINST USING BRISTOL FOR MARINE APPLICATIONS

I’m certain that the analysis of marine varnish was expensive and time consuming but one area that could benefit many subscribers if it was conducted continuously. Practical Sailor is the only place that I can rely on for accurate, up-to-date information on the products I need and use.

This is an important maintenance topic to me. Maintaining brightwork is a lot of labor. This article was last updated in June 2020. I would appreciate an update. I have been using Epifanes clear high gloss varnish for the last five seasons. It gives a good finish but it needs to be touched up one a year even though my boat is under cover for six months of the year. I sail on Lake Erie.

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The Best Marine Varnishes

Written by J. Harvey / Fact checked by S. Numbers

Let’s face it, we don’t give as much credit to the almost perfect combination of boats and varnishes. After all, vessels aren’t exactly cheap. They aren’t immune to deterioration as well. If there’s one solid way for you to preserve the life of your investment and even take her beauty up a notch, wouldn’t you seize it?

For my part, I can wholeheartedly say that these varnishes are great investments, especially if we’re talking about the best marine varnish. These concoctions go beyond their practical benefits, lending anything made of wood with a nice finish that only unlocks and magnifies their natural exquisiteness.

I can say as much for the products I’ve featured here. They have given me noteworthy, if not outstanding, results that make the others I’ve tried in my more than ten years of boating and fishing pale in comparison.

• Great finish
• Easy to use
• Great value for money

• Superb satin finish
• High gloss protection
• Very versatile varnish

• Easy to apply
• Excellent UV protection

Table of Contents

1. Rust-Oleum 207008 Marine Spar Varnish

2. totalboat gleam marine spar varnish, 3. epifanes cv.500 clear varnish, 4. mccloskey 7509 man o’war spar marine varnish, 5. totalboat 482869 lust marine varnish, 6. epifanes wfm.500 wood finish matte, 7. minwax 63200444 helmsman spar urethane, 8. interlux iva316/qt cetol natural teak varnish, 9. mccloskey 7505 man o’ war spar varnish, 10. pettit marine paint flagship varnish 2015, 11. system three 1855s16 marine spar varnish, 12. duralux m738-1 spar varnish, 13. old masters 153617 spar marine varnish, factors to consider when choosing marine varnish, what is the best marine varnish, what is the difference between spar varnish and marine barnish, how do you apply marine varnish to wood, how long will marine varnish last, is marine spar varnish waterproof, best marine varnish reviews.

If I’m going for all-around reliability and protection from sun and moisture damage, I’d choose this varnish in a heartbeat.

This is my go-to varnish for anything wood found in my sailboat. Whether it’s furniture or railing or sometimes even the bow, I often get the kind of maintainability I want every time I use this. The finish is no less attractive and only gets glittery over time in a number of my past applications.

Thinned up to around 30%, it dries quickly enough to apply multiple coats in a day. Sometimes I go for as low as 20%, down to even 5%. It’s because thinning too much does tend to backfire and lead to the varnish taking a long time to dry. It’s easy to use with everything considered.

If you want the best results, I’ve found that using a fresh foam brush with every coat would result in optimal smoothness. It may seem like a waste, buying multiple brushes, but the results are unrivaled, to say the least. I’ve had applications that lasted for a good 3 years before I needed to refinish them.

• Excellent UV and water protection
• More affordable but with high-end results
• Low shelf life

This varnish smoothly combines ease of use, beautiful finishes, and above-average durability. The winning formula for successful marine finishes for wood, in short.

This varnish is versatile in that it leaves plenty of routes open for you to take. For one, I like that they give you plenty of freedom when choosing the shine you want. It’s also available in different sizes, so I always get to buy only the proportions I deem fit for a specific project.

I have to be partial to the satin finish, though, since it delivers the exquisite luster I like to see in my indoor boat furniture and fixtures like railings. However, I always make sure to apply a high-gloss varnish if I’m working on anything that has to be exposed to the sun for long hours. That being said, I like that this product gives you both satin and gloss options.

I make sure to apply the high-gloss varnish as a topcoat, and I’ve gotten excellent results, mostly 1 to 2 years of unblemished finishes, with this practice. Sometimes, it’s shorter than that, especially on wooden areas that are more exposed to the elements. Yet, it’s protection you normally expect and can get from high-gloss varnish. In addition, it’s a varnish that’s also noticeably on the thin side, so I kind of get that it wears away faster than thicker varieties.

• Uncomplicated to apply
• Has multiple sheen and size options
• Not as durable as others

Another safe option, Epifanes marine spar varnish is anything but average with its status as a crowd favorite. Expect superior finish and durability if you choose this.

This varnish easily earns a spot here, considering its unchanging and undeniably positive reputation among boaters. Simply put, it’s hard to fault because of the wonderful results it can bring. The shiny, attractive gloss that has the Epifanes trademark is rarely surpassed by other marine-grade varnishes in my opinion.

What’s equally neat is that it’s not difficult to apply. You don’t really need to sand it with every coat, unlike the majority of other brands out there, but I still suggest you do it, especially in the later coatings. I recommend using marine spirits as a thinner with a 2:1 ratio, and take the time to pour it through a strainer to guarantee a smooth finish. At best, you’ll have to set 5 to 7 days of gradual coating to get the kind of attractive finish you want; and I mean capital-A attractive.

As in other great exterior varnishes, this product is an example to follow when imparting UV protection. At least, that’s what I think is primarily responsible for the excellent finish and the overall durability. I use this as much on my sailboat’s wood portions above the waterline and furniture as well as furnishings in my home, and the finish often lasts for 2 years on average.

• Amazing shine and finish
• Takes a while to dry
• Short shelf life

McCloskey’s Man O’War spar varnish is durable, to an almost no-brainer degree. It’s what I buy if I want to get the best out of what spar varnish offers to the average boater.

Despite its relatively hard finish, spar varnish tends to wear out faster than urethane. It’s a natural thing, so I won’t bother to list it as a con. You can’t mimic the deep amber tint, caramelization, and versatility of good old spar varnish, and this brand delivers no less than that trio of perks.

If I’m going to name a worthy brand representative of spar varnishes, I’d promptly pick this one. It adheres excellently to any kind of wood, so I generously slather any wooden fixture in my boat with this once I get a hold of a bottle.

While it’s easy to use, you’d better be prepared to invest time working with this varnish. I use mineral spirits for thinning, and I make sure to apply thin coats, starting from the middle, using a mini roller and a brush, mohair and ox hair respectively. I sand in between coats, and overall it takes time since it dries slowly.

The durability stems a lot from the outstanding UV protection. My sailboat’s wooden bow that has this finish has been battered by rain a good number of times already, and it’s still holding up after a year since the initial application. Since it’s effortless to apply, I just sand and recoat every once in a while.

• Outstanding UV protection
• Adheres to most types of wood
• Classic, eye-catching spar varnish finish
• Slow-drying
• Limited availability

TotalBoat is a household name in the marine industry as far as paints and varnishes go. This is the brand’s best offering if we’re going to consider fundamental factors like durability, shine, and value for money.

I need to stress outright that this varnish is extra thick, almost honey-like. If you don’t thin it out to at least 50%, you’ll only end up grappling with it to less than desirable results. It’s not exactly beginner-friendly with that considered, but it does pay off since you get optimal protection and the kind of shine any boat owner would be proud of.

Speaking of the finish, it begins to shine through once you hit the one-year mark. At least, that’s what I get from most of the vessels and furniture I apply it to. I can say that it’s smooth sailing once you take the time to know the right consistency.

I often use a roller and apply 5 coats then do a recoat after 2 hours in a whole day. Ideally, the last two coats should only be thinned by about 10% only. It might get tricky applying it then but, trust me, you’ll get the hang of it.

I get the results I want within a day or two — or more at times during less than optimal humidities and temperatures. Even so, that’s obviously quicker than handling traditional varnish, which takes weeks to settle. I do acknowledge the thinner’s role in helping with the drying time.

• Excellent shine and finish
• Proven durability
• Becomes easy to use with practice
• Quick-drying

If we’re talking about top-of-the-line, marine-grade durability, this one deserves to be called the best marine wood finish.

This is my favorite to use on teak because of its proven waterproof capabilities and the fact that its satin finish has just the right amount of sheen, for me, at least. It brings out the beauty of the teak and almost any wood I apply it to, for that matter, and this is coming from someone who has tried numerous marine-grade varnish before. I’ve had furniture that managed to maintain its finish for an impressive 5 years with the help of this varnish.

It’s a bit of a challenge to apply. It actually flows well enough as it is, and I rarely have to thin it with every application. However, you have to make sure that you apply it evenly with every coat and oftentimes as quickly as possible. Once I get patchy and bubbly results, that’s the only time I thin it, and I sand after the first coat, totaling up to 3 coats on average. It will dry more slowly if I thin it, though.

• Excellent durability
• Nice satin finish
• Flows smoothly without thinning
• Brings out the beauty of the wood extremely well
• Fairly cost-effective
• Not beginner-friendly

Though not marine-grade, Minwax has proven to be just as durable as many products with that label. It’s very easy to use and delivers just the right amount of shine.

I often use this on my sailboat’s furniture, and if left with no other options, even the wooden exterior of the hull and bow. It goes well with canoes, but I only tend to apply it on the ribs, rudder, and planking. While not marine-grade, it’s great for outdoor furniture, and, to me, that’s always a good sign of heavy-duty UV protection.

If I want to reinforce the protection, I only need to apply more layers, 4 coats at most but not less than 2. I’ve only used it on oak-made fixtures, though, and I get the longevity and finish I want with that kind of simple setup. The varnish lasts up to 1 to 2 years before recoating becomes necessary, with minor peeling only appearing after a year based on my experience.

I like that they give you plenty of options with regards to sheen and container sizes. I prefer satin for my interior furniture. I once made the mistake of not mixing it well and got a result that’s almost similar to high gloss. To avoid this, you need to make sure you mix it for a good 5 minutes and scrape the sides and bottoms of the can as you do so. This guarantees the soft shine you’re aiming for.

• Plenty of sheen and size options
• Decent durability
• Dries quickly
• Not exactly marine-grade

This varnish earns my thumbs up with the kind of inimitable finish it can deliver and its relatively easy application.

This has since become my favorite varnish on teak fixtures when I tried it out 2 years ago. This is because of the immense difference it makes in the way it lends my pulpit or anything made of teak with a sophisticated, good-as-new finish. It’s not overly glossy, which I attribute to the “natural teak” claim, and only darkens the wood a tad so it will still maintain its natural hues.

I’m glad it didn’t cause any yellowing, and after my second application, I can still say the same. It has a runny consistency that merits forgoing thinning on the first coat. I like to use a brush when applying it to have better control over coverage, which is great enough as it is, and all I can say is that I’ll apply this to my boat’s bow and rails the moment they start showing signs of wear.

Nonetheless, it would be pushing it to say that it’s as durable as the other varnishes here. It only took a year before my bow showed signs of peels and cracks. However, after I applied a single maintenance coat on the entire thing, I found that it limited or delayed the damage since I’ve yet to see signs again after doing a recoating. That being said, I suggest applying a fresh layer at least once a year to make the most out of this marine varnish for boats.

• Outstanding finish
• No sanding and thinning required in most cases
• Good coverage
• Minimal darkening
• Well worth the money
• A bit pricey
• Not durable

Budget-friendly, reliable, and just as good as other solid brands, this McCluskey varnish is a must for anyone choosing to go for value for money all the way.

The fact that this varnish can give you outstanding satin finishes and superb durability without going overboard in cost should give you a ready hint why a lot of boaters are shifting to this product. When I say superb durability, I mean thick coatings that you’ll be confident will last for years.

In my case, the minimum is 3 years on all my wood projects, boat bows, railings, and furniture included. You may start seeing peels and scratches here and there, as evidenced by the 7-year-old canoe that I refurbished 3 years ago. But, to me, it’s still none the worse for wear and nothing a minor recoating job won’t remedy.

The finish is not unlike the ones I get from the other varnishes mentioned here. It accentuates the natural color and look of the wood, and I’m saying this for redwood, teak, and light oak, which are the types I’ve applied it to. It dries in a day like most spar varnishes and typically doesn’t need to be thinned, though sanding is ideal per coat.

Incidentally, I need to underline the fact that this varnish is one of the few that doesn’t skin over in the can after you’ve stored what’s left of it. At least, that’s what I can say for most of the cans I’ve purchased and stored, with about a third of the can full in a year.

• Works well for most types of wood
• Superior durability
• Doesn’t skin like other varnishes
• More reasonably priced than other brands

This rarely figures in marine varnish review posts, and that’s unfortunate considering it’s another top-quality marine varnish that doesn’t yellow, imparts a glossy and thick appearance, and superb UV protection.

Usually, I use this as a general-purpose varnish for the teak and cedar parts and fixtures of my one and only yacht. It gives a deep-colored, thick, glossy, grainy, and smooth finish that I can’t get enough of. It doesn’t yellow at all, probably because of the UV additive used, at least, partly. Anyway, this is one positive quality I always like from any alkyd varnish that is done right.

I prefer to spray this one, following the 20% thinning guideline. Spraying shortens the time for full coverage. I sand lightly between coats using 220-grit sandpaper, and by and large, I only need 3 to 4 coats to get the beautiful finish I described above. It takes almost a whole day to dry, but I don’t mind since I get quality results.

As for durability, I can safely say it’s UV stable. I often leave a couple of chairs and tables out on the deck if the weather’s great, oftentimes, for an entire day. Besides a few scratches in some parts, which aren’t UV-related, they haven’t peeled yet and have maintained their shininess after 2 years since application. I can say the same for the yacht’s teak pulpit.

• Doesn’t yellow
• Superb UV protection
• Proven gloss retention

To me, this is the best boat varnish if we’re only considering durability. It also earns a ready checkmark in protection and attractive finish, making it nothing short of tough to beat.

As far as durability is concerned, the longest that I’ve seen this last without undergoing any kind of major peeling or cracking is close to 3 and a half years. It was on my favorite canoe, which I use fairly regularly for freshwater fishing. 3 years is the maximum for any exterior wood varnish for me, and without a doubt, many boaters would say the same.

I attribute most of the longevity to the excellent water and UV protection. My canoe has borne the brunt of rain and water splashes over the years. I can say the same when I expose it to extensive sunlight exposure when I go fishing in Lake Erie. Top-tier durability in my book.

I sometimes use a thinner with this varnish, but I’ve found that you don’t really need to thin it if you use an HVLP spray gun. Sure, it takes a while to dry and you have to be extra careful, but I’ll take that any day if I get to enjoy these perks and results consistently.

• Outstanding durability
• Relatively attractive finish
• Easy to apply with a sprayer
• Comes in gloss and satin varieties
• Dries slowly without a thinner

A true gem of a find, Duralux exceeded my expectations with its durability and versatility.

In almost any kind of marine varnish for exterior doors, durability and protection immediately go well together. This spar varnish proves it doesn’t belong on the back burner by delivering both. One of my canoes that I applied this on is still going strong for more than a year, and that’s a quality not a lot of products can boast of.

I’ve had varnish that didn’t take more than a month to start peeling and cracking. That’s after a fresh application, mind you, and, yes, I follow brand recommendations to a tee if I haven’t discovered a better way to apply it. This varnish has kept my other canoes shiny every time so I deemed it deserves the spotlight.

Moreover, it doesn’t yellow over time, unlike some clear varnish I’ve used before. You may argue that there’s a lot of variables when it comes to varnish yellowing, like sanding and possible chemicals it can react to. I’m not sure whether this is spar polyurethane, but I’m betting it is since that’s the only type of varnish I’ve used that doesn’t give me the yellowing effect even with minimal to no sanding.

• Satisfactory finish
• Uncomplicated application
• Doesn’t yellow over time
• Doesn’t dry quickly

Old Masters’s varnish shouldn’t be overlooked for its conveniences and quality that only a few top-tier varnish brands can bravely claim they can deliver every time.

This is among the lesser-known spar varnishes that don’t yellow even after a long time has passed. The canoe that I refurbished 3 years ago would prove as much, as it’s still holding up well, surprisingly if I might add. To be honest, this was a second option when I bought it as I didn’t have TotalBoat and McCluskey varnishes available back when I did the finishing job.

I was pleasantly surprised by how things turned out. I followed the instructions and stirred it well. It’s just the right kind of thick, to the point that I don’t have to thin it when applying with a brush or roller. I do have to thoroughly sand and clean the surface first, and it evens out nicely with every coating.

It dries quickly enough for me to apply a second coat in a single day, making me think it’s an exception among oil-based spar varnishes. At best, I give an allowance of 8 to 10 hours before brushing the next coat. Obviously, that’s a time-saving perk I’ll take any day.

It doesn’t produce a yellowing effect, even when applied to parts of my canoe that are regularly exposed to heat, sunlight, and the elements. That’s noteworthy considering it’s a clear varnish. I even have to say that the slightly weathered look it has gotten lends it a charm that most boaters would appreciate.

• Easy application
• Decent durability and finish
• Doesn’t yellow with age
• Limited to small pint-sized cans

Based on my experience, there are many “safe” marine varnish options out there. This only means you’re likely to not run out of beginner-friendly brands and can guarantee high-quality results at the same time. Whether it’s high-gloss or satin, all spar varnishes are easy to apply over new wood or previously coated surfaces. Marine varnish is also not partial to any type of wood and can accommodate those commonly found aboard or form part of a vessel, like teak, redwood, oak, etc.

However, that doesn’t completely discount the need to pay attention to certain factors when making your decision. These are usually the ones I make a note of when planning to start a varnishing job.

• Durability – I’ve found that marine-grade polyurethane is hard to equal when it comes to finishes that are guaranteed to last. Most spar varnishes pale in comparison to their urethane counterparts in this regard because polyurethane tends to last for a minimum of 3 years before re-coats are needed, based on my experience. This is why they’re great options as a marine varnish for outdoor furniture.

For spar varnishes, I’ve had finishes that only lasted a year or even less. At best, these two offer equally potent UV protection, waterproof benefits, and even resistance to scratching.

• Drying Time – Are you working with a severely limited timeframe and need to complete coats within a day? You may want to consider varnishes that dry faster like water-based spar urethane since these can dry in only a few hours. Most spar varnishes require a whole day of waiting to apply coats, assuming climate conditions are optimal.
• Ease of Use – To ensure you won’t end up throwing away your money, don’t ignore how easy or hard a specific varnish is typically applied.
• Shelf Life – It won’t hurt to pay attention to how long a specific can of varnish will last while in storage.
• Gloss – This is admittedly a largely subjective factor, but if you’re opting for high-gloss varnish, it’s almost always the one with the best durability. However, do you like your wood to be extra shiny? There are semi-gloss and satin finishes that are just as attractive, if not more, especially when used on anything wood that is below deck.

We also need to discuss the possibility of a varnish yellowing or darkening the wood that it is applied to. Sometimes, the darkening could be due to the UV additive or tint used; thus, making it unavoidable unless you opt for a different varnish brand altogether.

As for yellowing, there are ways to avoid it. I shall discuss it below, but sometimes, it’s due to the actual product as well, especially if they are clear, alkyd, or oil-based. It’s not an absolute thing, though, and there are products that prove to be exceptions to this rule.

You’ll hear a lot of experienced boaters recommending brands like Epifanes, TotalBoat, McCloskey, and Rust-Oleum. I agree with them because, to me, these brands can easily meet the standards of high-quality marine varnish. Each one has qualities where they serve to shine better, and the reviews I outlined above should give you a good idea about what they are.

Nonetheless, I’m not completely discounting the other brands I included here. I daresay that they’re just as good as those top-dog brands, especially in essential factors like durability and a long-lasting aesthetically appealing finish. Moreover, I find them to be valuable substitutes if any go-to brand happens to be unavailable and won’t even hesitate to pick them as the main option based on certain requirements of a finishing job.

Incidentally, you may have noticed that I didn’t include ease of cleaning when discussing these brands. That’s because most, if not all, of them are very easy to clean for me. At least, for the almost uniform smooth finishes that I get out of them.

There’s not much, really. When boaters use the term “spar varnish”, chances are, they’re also automatically referring to marine varnish. You can also see this in how brands usually label their products in online stores, like Sherwin Williams marine spar varnish or TotalBoat gleam marine spar varnish, to cite a few examples. If you’re using spar varnish, it’s almost always marine-grade.

Both terms give the ready connotation of finishes that provide heavy-duty protection against the harsh elements usually involved when boating, fishing, and cruising. You’ll find plenty of oil-based spar varnishes (i.e. tung oil, alkyd resin, etc.) that are imbued with additives that serve to accentuate the natural beauty of the wood, as well as solvents and other chemicals that promote fast drying and add UV protection.

Since certain varnishes have different components or are more natural or synthetic, it’s best to stick to the manufacturer’s instructions when applying any kind of varnish. However, we can’t deny that most projects share a few essential guidelines, such as the following:

• Preparation usually entails sanding between coats. The most ideal to use for this purpose is 180 to 220-grit sandpaper or even a Scotchbrite pad will do sometimes. Take note that some varnish products can do without sanding, especially for the initial coat. But, this would still depend on whether you’re applying it to a bare wooden surface or if it’s been previously coated before. If it’s the latter, then you’d most likely need to sand it first.
• Clean the dust that forms after sanding using a clean rag. I wipe it down further with a tack rag to ensure no dust or debris would still be present the moment I start applying coats.
• As for temperature and humidity, it’s best to apply any kind of marine varnish if the temperatures during the entire day don’t go above 80 degrees Fahrenheit. Humidity should be 50 to 60% or even slightly lower than that. I found that the smartest route to take is to be patient and wait for the right climate before going ahead with a project, especially if you know that it will take a number of days to finish.
• Thinning depends a lot on the product. If it’s too thick, it’s often necessary to do this, even if the brand doesn’t mention it in the instructions. The safest route for this is to follow a 2:1 varnish to thinner ratio. Mineral spirits are recommended.
• I also recommend taking the time to strain the varnish using a paint strainer to ensure a smooth finish. Sometimes, this can make all the difference in the world in getting the kind of finish that any boater would be proud of.
• As for applying coats, there are certain products that require you to start from the middle so that you can ensure an even coating. Others would caution about wiping too much, while many suggest, as is often the case in spar oil-based urethane, to make thin coats for every layer.
• Bristle brushes and badger-hair brushes are often the standard tool for application. But, again, there are products that are easier to apply with a spray or roller.

Most marine varnishes typically last for at least 2 years. There are brands that have a minimum of 3 years before they begin showing signs of damage. I can attest to marine varnish that keeps its shine and protection for 5 years, and I’ve highlighted the exact products that can achieve that.

Ultimately, if you keep its sun exposure to a minimum, you’re guaranteed to extend any kind of varnish’s lifespan. I’ve noticed that varnished fixtures and furniture in my yacht tend to last significantly longer than the ones that are exposed to sunlight extensively, regardless of the varnish’s UV-protective capabilities.

This is almost always the case considering this type of varnish is marine-grade. Most experts attribute this to spar varnish’s flexibility (i.e. its ability to expand and contract with the wood). However, equally many attribute it to the simple fact that spar varnish is mainly oil-based, allowing to wick away moisture with ease.

Now, do you have a good idea of what the best marine varnish brings to the table? With all things considered, the best parting advice I can give is to not hesitate to try out the options available to you. Sure, there will always be no-brainer choices, but it didn’t take long for me to find out that it pays to try out other brands because they may give your boat the kind of shine or longevity you’ve always wanted.

“I am James Harvey – founder of Boating Basics Online. It is established with the drive to help out first-time boaters, which are those desiring to explore their way through the water. So if you are new to boating, start from here with me. “

What’s the Best Varnish for Your Yacht?

Varnishing your yacht is an essential part of its care and maintenance. The benefits are twofold: yacht varnish protects your boat from the elements, while also giving it a beautiful shiny finish. But with so many different yacht and marine varnishes to choose from, it can be difficult to know which one is best for your boat. In this article, we’ll run through some of the most popular types of yacht varnish on the market to help you choose the right option.

What is Yacht Varnish?

Yacht varnish is an extremely durable solvent-based coating that is designed to protect the wood that yachts are made of and stop it decaying over time. Most varnishes are made up of a penetrating oil, resin and solvent. Although most yacht varnish is applied with a brush, it is possible to buy yacht varnish spray.

Different Types of Yacht Varnish Finish

There are many different types of finish to choose from, so you’ll need to know a little about them to decide which is the best yacht varnish for you.

• Clear Yacht Varnish. A clear yacht varnish does what it says on the tin: it will create a transparent, glossy finish that does not alter the colour of the wood it is applied to.
• Matt Yacht Varnish. Using a matt coloured yacht varnish will result in a dull, non-shiny finish that does not reflect light. This can be ideal for hiding flaws or imperfections in wood.
• Yacht Varnish Satin. A satin varnish falls between clear and matt. This type of finish will create a pearl-like sheen, without being overly shiny or reflective.

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Yacht Varnish Brands

There are various brands that produce yacht varnish. Here are a couple of the most popular:

Screwfix Yacht Varnish

Screwfix is a retailer in the UK that sells a variety of products, including hardware and building supplies. They may carry different brands and types of yacht varnish. Yacht varnish provides resistance to water, UV rays, and other environmental elements. Yacht varnishes often contain additives to enhance their durability and performance in marine conditions.

Ronseal Yacht Varnish

A durable, long-lasting marine varnish for wood that flexes with the movement of the wood and resists peeling and cracking. This varnish is slightly more pricey than the Screwfix varnish, but gets great reviews. You can buy the Ronseal brand of yacht varnish in B&Q and other retailers.

How to Varnish Your Yacht

Varnishing a yacht is fairly straightforward, if a little time-consuming. First you’ll need to carefully sand down the entire surface that you want to varnish to get it looking smooth. Then use a soft brush to wipe off any excess dust and debris, since you don’t want it getting trapped in the varnish.

Finally, use a paintbrush to coat the yacht with varnish. Leave it to dry for the recommended amount of time on the tin, then apply additional coats as required. Always check the instructions of your varnish type, and if unsure consult with an expert before starting.

• How long does it take for yacht varnish to dry? Yacht varnish generally takes 4 – 6 hours to dry, although you should check the instructions for the specific product you’re using. You’ll probably want to do two or three coats of varnish, leaving sufficient drying time in between coats.
• Is yacht varnish good for decking? This depends on the product you choose. Some yacht varnish is suitable for decking, while others are not because they do not have an anti-slip formula.
• Is yacht varnish good for floors? Yacht varnish should not be used as an indoor floor varnish. It is difficult to dry indoors, and contains chemicals that can be toxic if it is not used correctly.
• Is yacht varnish safe for animals? Yacht varnish is solvent-based and contains toxic chemicals, which means it should not be used for varnishing animal enclosures (for example, rabbit hutches or reptile enclosures).
• What is yacht varnish used for? Yacht varnish is used for sealing and protecting wood on boats and yachts. It is also commonly used for outdoor items such as wooden doors, window frames or pergolas.
• What type of varnish is yacht varnish? Yacht varnish is a solvent-based outdoor varnish that is extremely durable. It is usually made up of tung oil and polyurethane resin. 
• What is the best varnish to use on a boat? The type of varnish that is best for your boat will depend on the type of wood your boat is made from and the finish you are looking for. Tung oil varnish is a safe bet for most boats, or you may prefer to use a one-part polyurethane varnish for added durability.
• What is the difference between yacht varnish and outdoor varnish? In general, yacht varnish dries quicker and is designed for marine conditions, so it’s likely to be more durable than outdoor varnish. However, yacht varnish is unlikely to have an anti-slip formulation, making it unsuitable for decking around the home.

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Practical Boat Owner

• Digital edition

Best boat varnish: 7 top options for gleaming woodwork

• Drew Maglio
• October 13, 2022

Different varnishes do different jobs. Understanding their properties will help you decide what's the best boat varnish for your woodwork. Drew Maglio explains all...

Few things are as quintessential to the archetypal sailboat as gleaming, iridescent woodwork that is indicative of a recent coat with one of the best boat varnish products on the market.

Choosing a product and methodology to apply marine varnish to achieve such results is not as simple as it would seem at first glance however, and this guide aims to make the whole process easier for novice and seasoned boat-owners alike.

First things first, what exactly is boat varnish? Put simply, varnish is a chemical solution of three parts which includes a penetrating oil, resin, and solvent.

Boat varnish for exterior use, aka. “spar varnish” — aptly named because it was designed and envisioned as a flexible protective coating to protect a yacht’s wooden spar in the harsh (outdoor) marine environment — both protects and beautifies a vessel’s wood parts.

It does so by sealing the wood with a somewhat hard, yet flexible, clear protective barrier that can last up to three years of UV and element exposure in temperate climates for the most durable two-part product formulations.

These days, most high-end boat varnishes use tung oil and an alkyld or polyurethane resin. Of the two types of resin, polyurethane — either one or two part — is going to be much more durable and resistant to UV, abrasion, fuel/solvent spills, and impacts.

While a two-part product cannot be applied over a one-part product, a two-part product is going to last much longer and be far more durable. Hence for high traffic areas like cabin soles, a two-part polyurethane product cannot be beat for longevity and durability.

Boaters should be aware that the most onerous task of applying boat varnish is the surface prep, which requires removing all flaking previous coatings by sanding, washing with solvent to degrease the surface, in addition to taping nearby areas to keep the varnish off.

Because of that, I highly recommend using quality products over cheaper, lower cost options which will mean your boat needs revarnishing far more often.

International Perfection Plus two-part varnish

Best polyurethane boat varnish

International Perfection Plus is a well-known two-pot polyurethane

International Perfection Plus (sold in the US under the Interlux brnad) is arguably the best overall marine spar varnish on the market. This two-part polyurethane formulation is not only the most aesthetically spectacular, but also the most durable and longest lasting when exposed to UV.

This two-part product is applied to bare wood after careful sanding and degreasing and can be rolled/brushed or sprayed. It uses a proprietary Interlux thinner and one’s results will be excellent if one follows the recommended procedures to the “t.”

Of all the boat varnish products on this list, this two-part product is probably the least DIY-friendly.

Reasons to buy

• Most durable marine varnish in terms of hardness and flexibility • Best UV resistance • Most beautiful (glossy) varnish if applied properly • Hardness and longevity makes it a prime contender to redo cabin soles and floor boards (after proper surface prep)

Reasons to avoid

• Difficult application for inexperienced laymen • Expensive

Buy International Perfection PLUS two-part varnish on Amazon (UK)

Buy International Perfection PLUS two-part Varnish on Gael Force Marine

Buy Interlux Perfection PLUS two-part varnish on Amazon (US)

Buy Interlux Perfection PLUS two-part varnish on West Marine

Note: We may earn a commission when you buy through links on our site, at no extra cost to you. This doesn’t affect our editorial independence.

Epifanes clear varnish.

Epifanes Clear Varnish includes tung oil and alkyd

Epifanes offers quality marine paints and varnishes at reasonable prices and their Clear High Gloss Varnish is no exception. With 64% solids content (tung oil) and an alkyd base, this varnish is sure to be brilliant in terms of gloss with reasonable durability and longevity.

With one-part alkyd products, boat owners can expect up to two years of protection before maintenance is required if left out in the elements year-round. This product can be brushed, rolled, or sprayed.

• Affordable, quality one-part product • High solids content results in very glossy finish • Relatively easy to apply and achieve satisfactory results

• Not as much UV protection as other offerings • Not as impact or abrasion-resistant as other offerings

Buy Epifanes Clear Varnish on Amazon

Buy Epifanes Clear Varnish on West Marine

International Paints are also sold in the US under the Interlux brand

International Schooner Premish Varnish

A traditional marine spar varnish — albeit a good one — is Interlux’s Schooner Varnish.

With an alkyd base, 47% of tung oil solids, and UV inhibitors to boot, this product is a well-balanced one-part product that is suitable for a variety of uses. This product can be brushed, rolled, or sprayed.

• Affordable, quality one-part product • Well-balanced product in terms of UV protection and solids content • Relatively easy to apply and achieve satisfactory results

• More expensive than Epifanes • Not as impact or abrasion-resistant as some other offerings • Not as much UV protection as some other offerings

Buy International Schooner Varnish on Amazon (UK)

Buy International Schooner Varnish on Gael Force Marine

Buy Interlux Schooner Varnish on West Marine

Total Boat Lust High Gloss Marine Varnish

Best value boat varnish

In recent years, Total Boat has become very popular offering products comparable—and sometimes superior—to the “big three” of Interlux, Petit, and Epifanes, at a fraction of the cost and their “Lust High Gloss Marine Varnish” is no exception. This one-part formulation uses linseed oil and a modified polyurethane base.

• Very affordable one-part proper “marine” varnish • Does not require sanding • Comes in matte for those seeking a satin finish • One-hour re-coat time

• Tends to cure quicker than most varnishes and therefore can cure before properly “flowing out” • Requires 6-8 coats

Buy Total Boat Lust High Gloss Marine Varnish on Amazon (US)

Buy Total Boat Lust High Gloss Marine Varnish on Walmart

Cetol Marine Wood Finish

Best boat varnish for external teak

Cetol has been making alternative wood finishes for a long time. While this product does not have the aesthetic beauty of freshly applied gleaming varnish, it lasts far longer and stands up to UV better than every one-part varnish on this list.

When I had peeling varnish on my 1987 Ericson 38-200 sailboat moored in the tropical Florida Keys, I elected to use Cetol’s “Natural Teak” offering in lieu of varnish and found it incredibly easy to apply and long-lasting, requiring no surface prep to speak up but a quick hand sand and power wash. For outside teak, Cetol cannot be beat.

• Incredibly easy to achieve satisfactory results • Affordable • Long-lasting even when exposed to UV

• Not as beautiful as real varnish • Softer and less durable to impact/abrasion compared to most varnishes, especially polyurethane formulations

Buy Cetol Marine Wood Finish on West Marine

Miniwax Helmsman Spar Urethane

The last product featured on our list is Miniwax’s one-part polyurethane spar varnish. While not the most beautiful finish available, this product is durable (hard and abrasion-resistant), easy to use, and very affordable, making it a good choice for touching up one-part varnishes inside a boat’s cabin.

For repairing, touching up, or even redoing cabin soles, this would also be a decent budget option and therefore is included on this list. Unlike the many UV-resistant offerings on this list, Miniwax Helmsman is not very UV-resistant and therefore is not recommended outdoors.

• Very affordable, even for a gallon • One-part polyurethane enhances durability and longevity over alkyd-based products • Good for sailors on a budget needing to repair and touch up existing interior varnish

• Not as beautiful as alkyd-based marine spar varnished • Not very UV-resistant • Yellows in sunlight

Buy Miniwax Helmsman Spar Urethane on Amazon (US)

Hempel Dura Gloss

Best solvent-based boat varnish

Hempel Dura Gloss Varnish is a urethane modified alkyd, ideal for interior use

Hempel’s Dura Gloss Varnish is a urethane modified alkyd, ideal for interior use

On the downside, alkyd varnishes lack resistance to abrasion and usually only one coat can be applied per day, which can make varnishing a drawn out process.

The more expensive types are formulated to speed up cure times, improve gloss retention and generally last longer.

Buy Hempel’s Dura-Gloss Varnish on Amazon

Varnish properly applied to brightwork is a joy to behold. Photo: Thornton Cohen/Alamy

Which type of boat varnish to choose?

Varnishing often appears to be a simple task, but there’s a bewildering choice of boat varnishes on the market, writes Rupert Holmes.

An understanding of the qualities of different types of varnish is needed to choose the optimum one for each purpose. This is particularly true for exterior woodwork which has to withstand the ravages of sun, rain and frost.

There are only a few basic types of varnish, although in many cases hybrid products are available, particularly alkyd/ tung oil and alkyd/modified urethanes that can offer a wider range of desirable properties.

Polyurethane boat varnish

Polyurethane varnishes are a harder option with good wear resistance, but they lack the flexibility of alkyds. In addition, they tend to sit more on the surface of the timber, so often do not adhere as well to the substrate, which can make them prone to flaking and chipping.

The lack of flexibility makes a pure polyurethane unsuitable for traditionally planked boats, but it can be ideal for plywood , as well as for cold moulded and strip planked hulls.

Polyurethanes are available as both one-pot and two-pot products, the latter giving a harder coating and faster cure, which allows multiple coats to be applied in one day.

Article continues below…

Boat wood: a complete guide for yacht owners

Boatbuilder and finisher Lyndon March explains which types of wood work best for different repairs and modifications on board

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If you need to save the varnish overnight, take a look at this top tip on preserving two-part varnish in the fridge. However, they are a much more expensive option.

N.B. One-pot polyurethane can be applied over two-pot varnish but not the other way round.

Ultra-flexible single-pot polyurethanes, such as Coelan have an elasticity of more than 300%. It can also seal cracks, is highly resistant to impact damage and doesn’t need overcoating for several years and can last twice as long as traditional varnishes.

The biggest downside is that it’s four or five times more expensive than typical basic alkyd varnishes, so up-front costs are higher, although its long term performance means the total cost difference will be smaller.

Many boat varnish products can be painted, sprayed or rolled

Tung oil varnish

Tung oil is also frequently used in traditional varnishes: it soaks in well and, although a pure tung oil product will usually cure very slowly, the final finish is very tough.

Solvent-based varnish

Traditional solvent-based one-pot alkyd varnishes are ideal for use with traditionally built wooden boats. The coating is soft but flexible, which makes it resistant to cracking when used on timber that expands when wet and contracts in dry summer weather. Additionally, the initial coats tend to soak into the timber effectively.

Epoxy resin

Epoxy resin can also be used to coat timber, but generally has poor resistance to ultra-violet light, so a varnish needs to be applied over the top. Beware inexpensive ‘yacht’ varnish sold in DIY stores – the low prices are usually easy to explain in terms of extended drying times or poor long-term performance when used outside.

Dealing with surface damage? Don’t delay!

Whatever type of varnish is used, don’t delay on sealing any areas of damage. The key priority is to keep water out, so don’t wait until you have time and suitable weather for a full repair – touch in the damaged area immediately.

This may not have a silky smooth finish initially, but don’t worry. Even if it’s a few weeks before you’re able to do a proper fix you know there won’t be any further degradation.

Top boat varnish tip

A useful tip is to clean out one of the small match pots DIY stores sell to enable customers to test household colour schemes and fill it with varnish. They have a brush built into the lid, which never needs to be cleaned, thus making a quick touch up of damage a task that only takes a couple of minutes.

Find out how to get the best finish with these 8 top tips for varnishing .

Didn’t find what you’re looking for? Head to Amazon’s dedicated boating page for more marine products.

Which Yacht Varnish Is Best For My Boat?

Yacht varnish is a specialized type of varnish that is often used on boats. It has several advantages over conventional varnish, which is why it is becoming more and more popular among boat owners. In this guide, we will discuss the benefits of yacht varnish. We will also answer some common questions about yacht varnish. So if you are interested in learning more about this topic, keep reading!

Yacht varnish is a type of varnish specifically designed for boats. It is typically made from a tougher resin that can withstand the harsh conditions that boats are exposed to, such as salt water and sunlight. Yacht varnish also often contains UV inhibitors to help protect the wood from fading and other damage caused by exposure to sunlight. Conventional varnishes are not as durable as yacht varnish and will not stand up to the same conditions. This makes them less suitable for use on boats. However, they can still be used for other applications, such as furniture or around the garden.

Which types of varnish to use on my boat?

Marine varnish can be divided into three different types, each with its own perfect uses. Yacht owners choose to use one or all of these types for better performance.

Tung Oil-based varnish 

Is the most popular type among yacht owners who take boat maintenance seriously. International Schooner or Goldspar Boat Varnish are both oil-based varnishes that coats the wood evenly leaving a smooth finish while requiring minimal preparation work before it can be applied. This only requires a couple of coats. Is advisable to lightly sand the surface between coats to achieve the highest quality glossy finish. The smooth, high gloss finish will protect teak parts from water stains and help to maintain their appearance over time! Its UV protection helps prevent mould growth too which is especially important in wetter climates. Oil-based varnish is easy to apply and can be repaired by sanding and re-oiling the wood, meaning it will last longer than other conventional varnishes. It's also easier to apply compared with water-based yacht varnish which requires no sanding or priming before application.

Water-based boat varnish

Often used on marine boats where there is not much exposure to agitation or rubbing, making oil-based varnish too heavy for use. This yacht varnish type tends to leave a thin, powdery residue that needs sanding down after drying but offers better penetration into the wood than its oil counterpart. Polyurethane boat varnish - is much more hard-wearing than oil or water-based yacht varnishes. Stronger than oil-based or water-based yacht varnish, polyurethane yacht varnish tends to dry quickly and offers an ultra-hard surface that is resistant to impact, scratching and denting. This yacht varnish type has a high gloss tough finish so it's best suited for areas of the boat that are exposed to more wear and tear. This type of varnish can also be divided into two categories as one part polyurethane boat varnish and two-part polyurethane varnish.

One Part Polyurethane Varnish

The yacht varnish that is most commonly used for yacht paint jobs. The yacht varnish offers a quick drying time and can be easily re-coated within hours between each coat. It should be noted that due to its rigidity it is not recommended to be used for painting highly flexible wooden areas as it might crack in time leaving the wood exposed to elements. Two-Part Polyurethane Varnish - is the varnish with longer working times, making it easier to apply on larger boats. It's advisable to use only one part polyurethane yacht varnish for smaller projects as two-part yacht varnishes tend to leave an unprofessional finish when applied by hand. This type of varnish is extremely tough and consists of two products mixed together. It offers very good protection from moisture and UV damage but the same as the above this is not suitable for some areas on your yacht (such as spars) and it will crack as the wood moves and will leave the wood exposed to the elements.

Is yacht varnish waterproof?

Yes, yacht varnish is typically waterproof. This makes it a good choice for protecting boats from the elements. It can also help to keep the wood of the boat looking its best for longer.

Does yacht vanishes need a primer?

No, yacht varnish does not typically need primer. However, it is a good idea to test it on a small area of the surface you are going to varnish to make sure it adheres properly. If you do decide to use primer, make sure it is designed for use with yacht varnish.

Does yacht varnish seal wood?

Yes, yacht varnish seals the wood. It forms a protective barrier that helps to keep the wood from damage and keeps it looking its best for longer.

How long does yacht varnish last?

The lifespan of yacht varnish varies depending on the brand and the conditions it is exposed to. However, it typically lasts for several years, anywhere from two to three years before you need to apply a new coat or two. Some varnishes obviously last longer than others depending on the area where they will be applied.

Which is better? Woodstain or yacht varnish?

There is no simple answer to this question as it depends on the specific application and the needs of the user. However, in general, yacht varnish is a better option for protecting wood from the elements and keeping it looking its best. It is also typically more durable than wood stain, which makes it a better choice for boats.

Why is it important to sand between coats?

It is important to sand between coats of yacht varnish because it helps to create a smooth, even surface. This makes the final coat of varnish look its best and helps to protect the wood from damage.

How many coats should I apply?

The number of coats you should apply depends on the specific product you are using and the area you are varnishing. In general, two to three coats are sufficient. However, it is always a good idea to follow the manufacturer's instructions for the best results.

What type of finish can you get?

There are three types of finish on boat varnish: gloss, semigloss, and satin. Each one has its own benefits and drawbacks, so it is important to choose the one that best suits your needs. Gloss finish is the most durable, but it is also the most reflective. This can make it difficult to see in bright sunlight. The semigloss finish is less reflective than gloss, but it is still quite durable. It is a good choice for areas that receive moderate amounts of sunlight. The satin finish is the least reflective and also the least durable. However, it can provide a more natural look to the wood. It is a good choice for areas that do not receive a lot of sunlight.

Can you paint yacht varnish over wood stain?

Yes, you can put yacht varnish over the wood stain. However, it is important to make sure that the stain is fully dry before applying the varnish. Otherwise, you may end up with a sticky mess.

How long does it take for yacht varnish to dry?

The drying time for yacht varnish varies depending on the brand and the conditions it is used in. In general, you can expect it to take anywhere from six to eight hours to fully dry. However, it is always a good idea to read the manufacturer's instructions for the best results.

Can you thin yacht varnish?

Yes, you can thin yacht varnish if it is too thick. However, you should only use a thinner that is specifically designed for use with yacht varnish. Otherwise, you may end up with a poor-quality finish.

What is the best way to remove yacht varnish?

The best way to remove yacht varnish depends on the type of finish you have. If you have a glossy finish, you can use a polishing compound. For a semigloss or satin finish, you can use sandpaper. In general, it is best to remove yacht varnish with a power sander. However, you can also remove it by hand if you are careful.

Can I apply a new coat over the existing varnish?

Yes, you can apply a new coat of varnish over the existing varnish. However, it is important to make sure that the old coat is in good condition. Otherwise, you may not get the desired results.

Does yacht varnish go yellow?

Yacht varnish is designed to keep your boat looking good as new even throughout the season's hottest and coldest temperatures. The UV inhibitors prevent yellowing, which can otherwise occur due to exposure to external factors like sunlight or rainwater on a dock; they also remain slightly soft so that it will not crack when expanding or contracting with changes throughout each year. Liquids such as engine oils may cause blistering if left unprotected by an anti-blister agent like silicone lubricant (which contains graphite).

Is yacht varnish oil or water-based?

Yacht varnish is typically oil-based. This makes it more durable and resistant to fading. However, water-based varnishes are also available. These are less durable but easier to apply.

So which yacht varnish is right for you?

Choosing the right yacht varnish depends on how much time you want to put into maintaining your boat as well as its location. We stock a wide range of varnish suitable for any type of wood on your vessel.

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Best Marine Varnish for Boats

What is Marine Varnish? Marine varnish is a finish coating that protects the outer part of the wood. Specifically, in this instance, it protects the wooden parts of a boat from the sun, rain, wind, sea spray, ultraviolet rays, chemicals, and other extraneous factors. Therefore, a marine varnish must be applied to a boat’s outer wooden parts. Therefore, for one to gain the full advantage of marine varnish, he must choose a good marine varnish product to avoid unnecessary complications that would affect the structure of the boat’s wooden surfaces. In this article will discuss the best marine varnishes to help you make the right choice when purchasing a marine varnish product. 

Some Of The Best Marine Varnishes for Boats Are:

Epifanes Clear Varnish

The “Epifanes clear varnish” is well-rounded when it comes to all the features an exterior finish should have. It is composed of Ultraviolet rays filters like alkyd resins and phenolic that would protect the outer wooden parts properly from the effects of Ultraviolet rays. Due to its components, it is easily absorbed by wooden surfaces, and its effects are long-lasting, which makes it an ideal wood varnish. In other words, it gives off a durable rock solid result. It also has a glossy finish that improves the aesthetic value of any wooden surface. 

Application of the varnish can take days because of the process involved. However, another advantage of the “Epifanes Clear Varnish” is that it takes less time to apply than the typical marine varnish, and more than three methods can be used. In other words, this particular product is very effective when it comes to the longevity and durability of wooden structures. Link to Amazon .

>>Also Read: Best Antifouling Bottom Paint for Boats

Total Boat Lust Marine Varnish

A remarkable feature of this marine varnish is its high glossy look, improving the aesthetic value of any boat’s wooden surface. Generally, most marine varnishes change the color of the wood it is applied on by either making it a lighter or darker shade of brown, thereby altering the originality of the wood. The “Totalboat Lust Marine Varnish” improves the wood’s original color without taking from the original aesthetic. The varnish makes the original color of the boat bolder and gives it a fresher look. 

Also, because of the varnish’s nature, sandpaper is not needed to remove materials or scratches from the wood surface because the varnish aims to improve the wood’s natural texture. Like the “Epifanes Clear Varnish,” and unlike most marine varnishes, Total Boat Lust Marine Varnish doesn’t take much time to apply because it dries fast. It can also be applied between six to eight coatings which is not difficult compared to other varnishes. A day is sufficient. 

This product is available in two different forms: the matte finish and the high gloss finish. The matte finish improves the natural beauty of the wood, giving it a bolder outlook. In contrast, the high gloss finish improves the brightness of the woodwork. The varnish is also strengthened by UV stabilizers which means that the wooden surface will be protected from Ultra Violet rays from the sun. Link to Amazon .

TotalBoat Gleam Spar Varnish

As the name implies, the “TotalBoat Gleam Spar Varnish” can be applied to almost every wooden part of the boat. It can be used for the exterior and interior parts and even wooden furniture with the boat. An excellent feature of this varnish is its versatility. It is made up of tung oil, resins, and other stabilizers that prevent ultraviolet rays from affecting the wooden structure of the boat. It is highly resistant to sunlight and its effect.

Also, it is a very unique varnish that gives off a warm effect and has a very pleasant smell that lacks harshness when applied. 

It also improves the coloring of the wood by giving it a light amber effect which improves its beauty. In other words, the “TotalBoat Gleam Varnish” makes the wooden part of the boat look and smell nice. Another valuable feature of this varnish is that it is waterproof. The importance of a boat being waterproof cannot be over-emphasized because it improves the lifespan of the boat’s wood (like a wooden deck) and prevents decay etc.

In terms of application, it can be applied in several ways. For instance, it can be applied using a brush, a roller, a spray gun, etc. This varnish comes in two forms: the gloss and satin finish. The gloss finish varnish is the preferred option for the outside wooden part of the boat because of its properties. It gives the boat depth and makes it look more solid when applied. Also, the satin varnish improves the texture of the wood, so it is great for interior woodwork. Link to Amazon .

>>Also Read: Best Non-Skid Boat Deck Paints

Pettit Captain’s Varnish

Unlike the other recent varnishes, the “Pettit Captain’s Varnish” is an old brand that has been on the market for over 5(five) decades. The beauty of this product is that the new version is always better than the last. In other words, the “Pettit Captain’s Varnish” is a legendary brand that has been greatly improved over the years. As a result, it is the “experienced boater’s choice”. It has a glossy look that improves the boat’s natural beauty and gives it a bold and deep feature when applied.

It is a very durable varnish that lasts long and has been tested and recommended by boaters for decades. Also, the varnish provides UV protection on the wooden surfaces from UV rays’ effects. Like the “TotalBoat Gleam Varnish,” the Pettite’s varnish can be applied inside and out. In addition, the varnish can protect the boat from harsh weather conditions when applied properly.

As for the properties of the varnish, it is a water-based, marine-grade polyurethane gloss varnish that gives a smooth, elegant effect after it has been applied to any wooden surface of your boat. Another added advantage of this varnish is that it is eco-friendly. Most varnishes affect the environment because of their chemical elements. Also, they can impact the health of the boaters in the long run. However, this varnish is all-natural and eco-friendly, and this feature makes it stand out from the other varnishes.  Link to Amazon .

McCloskey/Valspar Spar Varnish

In a saltwater environment, the smell of the surroundings can get attached to your boat, giving it the “smell of the sea.” Although most of the time it’s nice, it can be very unpleasant sometimes. That is where the key feature of the “McCloskey/Valspar Spar Varnish” comes into effect. The varnish is resistant to water, salty air, and the smell of it. It also has a very durable finish that can last for a very long time. Also, it protects the boat from the effects of sunlight because of the UV protection present in the finish. 

It improves the wood color significantly, especially if it is an old wooden boat. If applied carefully, it can be used to hide the age of a boat, especially if the color of the wood has an old look to it. Also, it can be used for interior furniture to improve its natural beauty. It can be applied with different techniques, ranging from a brush to a roller. 

Another valuable feature of the “McCloskey/Valspar Spar Varnish” is that it is very resistant to the harsh weather environment that usually affects boats generally. Although this product is very effective, it is not advised to be applied to decks. The main reason is that it has a slippery feel to it when it’s wet, which can be very dangerous in certain circumstances. Apart from this setback, it is a very effective varnish. Link to Amazon .

>>Also Read: Painting Gelcoat: How To

Rust-Oleum 250141H Ultimate Spar

The key selling feature of the “Rust-Oleum 250141H Ultimate Spar Varnish” is that it is resistant to so many factors that can possibly affect boats in general. For instance, it is resistant to mildew, scratches, damage from UV rays, and harsh weather conditions because of its durability. It not only improves the beauty of the wooden part of the boat but is also a very effective protective coating. 

The durability of the “Rust-Oleum 250141H Ultimate Spar Varnish” is outstanding compared to other varnishes. It can also be used in the interior parts of the boat in places like doors, interior floorboards, etc. It can also be cleaned frequently with soaps and detergents. The “Rust-Oleum 250141H Ultimate Spar Varnish” has three finish options: satin, gloss, and semi-gloss, which is unique because you can use any depending on your taste and what you want.

Also, most marine varnishes rarely have above 2 finishes. This clearly differentiates the “Rust-Oleum 250141H Ultimate Spar Varnish” from other varnishes.  Link to Amazon .

>>Also Read: Best Boat Hull Cleaners

Best Marine Varnish for Boats – Final Thoughts

The best marine varnishes listed above should be on your purchase list when you are looking for a marine varnish that would protect, enhance the overall effectiveness and improve upon the aesthetic value of your boat.

Peter is the editor of Better Sailing. He has sailed for countless hours and has maintained his own boats and sailboats for years. After years of trial and error, he decided to start this website to share the knowledge.

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Top 8 Best Marine Varnish for Wood- UPDATED Buying Guide

Table of Contents

With the best marine varnish for wood, you can ensure that your wooden boat or other wooden objects will remain in perfect condition. With so many different products on the market, it is difficult to find the best without doing some research first. In this article, we have compiled a list of the best marine varnishes for wood and what factors to consider when making your decision about which one is best suited for you and your needs. We hope that after reading this article you will be able to make an informed decision as well as select the best product available on the market.

The most frequent way of rejuvenating old wood is to varnish it in different wood finishes. Many people varnish their cabinets and countertops to give them extra protection as well as a glossy finish. A finely varnished wood or piece of furniture is both attractive and stunning sight.

However, determining the finest marine varnish for wood is a difficult enterprise. Many people are perplexed as to whether or not they’re using the proper product. I’ll go through the best marine varnishes for wood and what you need to know before making a decision and how to apply them correctly. What exactly is a maritime varnish?

Summary Of The Best Marine Varnish For Wood 

What Is Marine Varnish?

Marine varnish is a type of varnish that is specifically formulated to protect wood surfaces in marine environments. It is made with special ingredients that make it more durable and resistant to water, UV rays, and salt. Marine varnish is commonly used to protect wooden boats, decks, and outdoor furniture. It is also used on interior wood surfaces that are exposed to high humidity or moisture, such as bathrooms or kitchens. Marine varnish can be applied to bare wood or over an existing finish, such as stain or paint. Tung oil , phenolic, and alkyd resin are some of the current materials used in the best marine varnishes for wood.

What Do Marine Varnishes Protect Against?

Marine varnish protects the surface of wooden boats and objects made from pine or any other type of wood that has been exposed to water against damage, corrosion, mold growth, UV degradation, scuffs, and abrasions. The best marine varnish for wood can be used on exterior and interior surfaces, so you only need to purchase one product for a film-forming finish. They can also protect against harsh weather conditions such as rain or humidity that might influence your best marine varnish for wood.

Different Types of Marine Varnishes

There are several types of marine varnishes available in the market, and choosing the right one can be confusing. Here are the six different types of marine varnishes:

• Traditional Varnish: Natural resins, such as linseed oil, tung oil, and pine tar are the essential components of traditional varnish that coat surfaces to a deep luster. This finish is very resilient but requires multiple coats for completion as well as a longer drying time than other finishes.
• Spar Varnish: Spar varnish is a specially designed exterior sealant that fuses natural and synthetic resins, making it resilient to ultraviolet rays, water damage as well as other harsh weather conditions. With this type of durability at your disposal, you’re sure to have long-lasting protection for your outdoor investments.
• Two-Part Varnish: Make your boat shine with two-part varnish. This high-performance product is composed of a resin and hardener that when combined, form an incredibly long-lasting finish. Due to its durability, this type of varnish is commonly used in marine applications and boats alike. So give your vessel the protection it deserves – go for two-part varnish today.
• Epoxy Varnish: For superior protection against water and UV rays, the epoxy varnish is your go-to solution. Boats and other marine applications reap the most benefit from this innovative type of varnish, made with powerful epoxy resin for a hardy finish that will stand up to even the toughest conditions.
• Polyurethane Varnish: Polyurethane varnish is a resilient, waterproof solution that provides long-lasting protection against the elements and UV rays. It’s an excellent choice for outdoor furniture and decking surfaces, as it maintains its strength over time despite regular exposure to rain or sunlight.
• Acrylic Varnish: For a protective finish that can withstand the elements, the acrylic varnish is your answer. Made with acrylic resin and offering resistance to water damage and sun rays alike, this type of varnish works wonders on all indoor wood surfaces.

Benefits of Marine Varnish

Protection against water and moisture.

Applying a layer of marine varnish to wooden surfaces helps create an impermeable shield that prevents water from infiltrating and causing damage. This is especially important for boats, docks, or any other structure which are regularly exposed to moisture. Marine varnish guards against wood rot, warping, swelling, and cracking brought on by prolonged exposure to humidity.

Take a wooden dock that is consistently exposed to water, for example. Without the appropriate protection and maintenance, it can rapidly deteriorate and become hazardous. By coating it with marine varnish though, you can protect the wood from damage caused by moisture; thus preserving its longevity for many years.

UV Protection

Exposing wood to extended amounts of sunlight can cause it to lose its vibrancy and become weakened, not just in terms of color but also strength. The use of marine varnish helps protect the wooden surface from solar radiation by providing a UV filter. Consequently, these filters help maintain the quality of your wood’s appearance for years on end while preventing any discoloration or fading that might otherwise occur without this protective layer in place.

Durable and long-lasting finish

Marine varnish is crafted to ensure toughness and durability, even in harsh conditions. Saltwater, humidity, and extreme temperatures can all be tolerated with this veneer – making it the perfect solution for boat decks, dockside areas, or any other exterior wood surfaces exposed to tough elements. With marine varnish coating your outdoor furniture you are sure that its beauty will stay intact no matter what Mother Nature throws at it.

Unlike other finishes, marine varnish offers enduring protection that can continue for up to 10 years or even more when adequately cared for.

Enhances the natural beauty of wood

Boats can be a work of art, and marine varnish helps to bring out their natural beauty. This clear finish enhances the wood grain and texture so that it pops – creating an eye-catching look with stunning results. In other words, the marine varnish is essential for any boat to fully appreciate its unique aesthetic.

As an example, think of a sailboat with magnificent teak decking. Enhancing its innate beauty by varnishing it can make the wood appear more eye-catching and timelessly classic at the same time.

Resistant to scratches and abrasions

Marine varnish stands apart as an impenetrable finish that resists scratches and abrasions. For areas of your home or business that are subjected to regular use, the marine varnish is the ideal choice for keeping surfaces looking pristine.

Consider, for instance, a dock of wood utilized to load and unload boats. Unprotected wood surfaces are prone to becoming scuffed or scraped easily; however, with the application of marine varnish as a protective layer these abrasions will be guarded against so that your wooden dock remains in pristine condition over many years.

Reduces maintenance requirements

Marine varnish gives a robust and enduring finish, thereby reducing the need for the upkeep of wood surfaces. Unlike other finishes which may necessitate frequent application or sanding, marine varnish offers long-term protection that requires little maintenance. This can be particularly beneficial for boat owners, who may not have the time or resources to perform regular maintenance on their vessels. By using a marine varnish, they can ensure that their boat remains in good condition with minimal effort.

Can be used on a variety of wood surfaces

Marine varnish is a multifunctional finish that can be utilized to protect various wooden surfaces, from boats and docks to outdoor furniture. For instance, think of a deck exposed to the elements – sun, rain, or snow – it’s the perfect place for marine varnish! With its robustness and versatility in mind, there are countless applications where this protective coating should not be overlooked. By applying a marine varnish, the deck can be safeguarded against damage caused by these elements, and its beauty preserved for many years.

Marine varnish is a remarkably adaptable finish that can be applied to boats, docks, decks, and outdoor furniture. This makes it the perfect choice for any application requiring an effective layer of protection against harsh weather conditions.

Consider a wood deck, exposed to all the elements nature has to offer such as sun, rain, and snow. Applying marine varnish will protect this type of surface from wear and tear over time, ensuring that it requires less maintenance in the long term. Similar logic applies to outdoor furniture which is also subject to diverse weather conditions; protecting them with marine varnish can dramatically extend their lifespan and reduce upkeep requirements.

Provides a glossy or satin finish

Marine varnish is renowned for its ability to provide a stunning glossy or satin finish that truly brings out the natural beauty of wood. Whether you desire a low sheen or high gloss, marine varnish has it all due to its heightened resin and oil content which together create an ultra-durable surface capable of reflecting light and lending deep vibrancy to any type of timber.

Disadvantages of Using Marine Varnish

Longer drying times.

Although marine varnish is renowned for its impressive durability and long-lasting protection, it, unfortunately, takes longer to dry than other finishes. Depending on the specifics of each application such as the type of varnish and environmental conditions, drying times could range anywhere from a few hours up to several days. However, due to this extended curing period, you can rest assured that your project will be secure against even the harshest weather conditions.

Requires multiple coats

Applying multiple coats is a common requirement for marine varnish, as it lacks the same thickness and strength in comparison to other wood finishes. Consequently, you must layer on several layers of this finish to protect your woodwork and achieve your desired level of aesthetic quality.

More expensive than regular varnish

Marine varnish is costlier than other wood finishes due to the exceptional durability and longevity it provides. This is because marine varnish contains increased resin levels, as well as additional ingredients, which increase its production costs. Furthermore, this type of finish necessitates multiple coats be applied; thus increasing labor-related expenses that are associated with using a marine varnish finish.

Can be challenging to apply

Applying marine varnish, especially for those with limited experience with the process, can be tricky. Its thinner consistency compared to other finishes makes it more vulnerable to dripping and streaking while its extended drying period can make achieving an even application in humid or damp climates a challenge.

Not suitable for all types of wood

Marine varnish can be an ideal option for many wood surfaces, yet it may not always deliver the best results. For instance, when applied to excessively porous or oily woods, the marine varnish will likely fail to adhere properly and produce a sub-par finish. To ensure success with this product on certain types of wood, proper preparation or conditioning is necessary before application.

Can yellow over time

If you’re looking for a varnish that won’t discolor your wood over time, it’s important to invest in one of high-quality containing UV inhibitors or other additives. Such products can prevent yellowing due to prolonged exposure to UV light and the environment. Marine varnishes without these features are more likely to cause an undesirable amber tone on wooden surfaces as they age. Additionally, regular maintenance and cleaning can also help to prevent yellowing and extend the life of the finish.

RELATED: Best Varnish for Wood Doors: Top 5 Reviewed, 2O21

Factors To Consider When Choosing The Best Marine Varnish for Wood

The type of wood being used.

Before selecting the optimal marine varnish for wood, it is essential to identify the kind of timber being used. Different woods have distinctive properties that influence their absorption and retention of varnish. Some kinds such as teak or mahogany contain natural oils which can make adhesion difficult; consequently, these must be taken into consideration when deciding on what product will ensure proper coverage. Woods like pine are more susceptible to harm from rain and other elements due to their softer, porous nature. Therefore, you must select a marine varnish tailored to the material used for it to provide maximum protection.

The location and environment of the wood

When selecting marine varnish, it is essential to think about where and how the wood has been exposed. Woods that are subject to intense conditions such as saltwater, ultraviolet light, and extreme temperatures necessitate a more reliable and protective coating than those in calmer environments. To further ensure longevity, woods located in damp climates must be rubbed with a varnish that can stand up to these particular conditions without eroding their defensive qualities.

The level of protection required

When selecting a protective coating for your wood, its location is of paramount importance. If it’s exposed to harsh environmental conditions like those found in marine settings, you’ll need to invest in higher-grade protection against water and UV rays. Alternatively, if the wood resides in an area where these elements are less present, lower levels of varnish may suffice.

The desired finish

When selecting a marine varnish for your wood, the desired finish should be kept in mind. These types of paints come in varying finishes from high gloss to satin, so it’s important to consider what look you’re going for before making any decisions. Ultimately, the choice is purely based on personal preference and desired aesthetic.

The application method

The application process is integral in the selection of a marine varnish. There are many types available, some of which can be brushed on while others require spraying or rolling. To create that perfect even finish you seek, make sure to select one that can be applied with your desired method; otherwise, it may not provide satisfactory results.

The drying time

When selecting the ideal varnish, one needs to consider drying time. Certain marine varnishes may require a longer wait before they are ready for use or exposure to harsh weather conditions – and this is something you must take into account when making your choice. Thus, you must select an option with a drying time appropriate for its purpose.

The durability of the varnish

When selecting a marine varnish, it is essential to consider its durability. Although all marine varnishes have been crafted for longevity, some are more durable than others. Opt for one that will protect the wood from any conditions it may encounter and guarantee an optimal level of protection.

The cost of the varnish

When deciding on a marine varnish, not only is it essential to take the level of protection into account but also its cost. Prices may range greatly among different products, so prudently select one that fulfills your needs without breaking the bank. You should keep in mind though, that quality costs more upfront; nevertheless, you can save money over time because premium brands require fewer reapplications or repairs.

Marine Varnish For Wood vs Oil-based Finish: Differences

Marine varnish for wood and oil-based finishes are two popular options for protecting and enhancing the natural beauty of wood surfaces. While they share some similarities, they also have significant differences.

Composition of Oil-Based Finishes:

Natural oils, resins, and solvents come together to make oil-based finishes. These penetrative sealants protect the wood while granting it a natural glow. Popular examples of these finishes include tung oil, linseed oil, and Danish oil.

Advantages of Oil-Based Finishes:

• Easy to apply
• Penetrates the wood fibers for deep protection
• Enhances the natural grain and color of the wood
• Can be easily repaired if damaged
• Provides a soft, natural-looking finish
• Less expensive than marine varnish

Disadvantages of Oil-Based Finishes:

• Longer drying time than marine varnish
• Requires multiple coats for maximum protection
• Susceptible to scratches and abrasions
• Can attract dirt and grime over time
• Not as durable as marine varnish
• May require more frequent reapplication than marine varnish

How Oil-Based Finishes Compare to Marine Varnish for Wood:

Offering protection and bringing out the natural beauty of wood surfaces, oil-based finishes, and marine varnish have distinct discrepancies. Marine varnish is meant for outdoor use specifically as it provides optimal security from water, moisture, and UV rays; additionally, its toughness surpasses that of oil-based finishes making it more durable in the long run. In comparison, oil-based finishes are simpler to use, appear more natural and cost less than marine varnish. At the end of the day, a person’s selection between these two should be based on their desired outcome and personal preferences.

Marine Varnish For Wood vs Polyurethane: Differences and Similarities

Marine varnish and polyurethane are two popular finishes for wood. While they share some similarities, they also have some key differences. Here are some of the main differences and similarities between marine varnish and polyurethane:

Composition of polyurethane finishes:

Polyurethane is a synthetic plastic material that is composed of urethane and other chemicals. It is used as a coating for many materials, including wood. Polyurethane is available in both water-based and oil-based formulas.

Advantages of polyurethane finishes:

• Durable: Polyurethane is a very durable finish that can resist scratches, abrasions, and other types of wear and tear.
• Water-resistant: Polyurethane is water-resistant, making it a good choice for use in areas that are exposed to moisture.
• Easy to apply: Polyurethane is easy to apply, and can be applied with a brush, roller, or spray gun.
• Versatile: Polyurethane can be used on a variety of surfaces, including wood, metal, and plastic.
• Quick drying time: Polyurethane dries relatively quickly, which can be convenient when you’re trying to finish a project quickly.
• Glossy finish: Polyurethane provides a glossy finish that can enhance the natural beauty of wood.

Disadvantages of polyurethane finishes:

• Can be difficult to clean up: Polyurethane is difficult to clean up, especially if you’re using an oil-based formula.
• Strong odor: Polyurethane has a strong odor, which can be unpleasant and may require proper ventilation during application.
• Can yellow over time: Polyurethane can yellow over time, which can be a problem if you want to maintain the natural color of the wood.
• Not as resistant to UV rays: Polyurethane is not as resistant to UV rays as marine varnish, which means that it may not provide as much protection against sun damage.
• Not as flexible: Polyurethane is not as flexible as marine varnish, which means that it may crack or peel if applied to wood that expands and contracts with changes in temperature and humidity.
• Can be expensive: Polyurethane can be more expensive than other types of wood finishes, which may be a consideration for some users.

How polyurethane finishes compare to marine varnish for wood:

When deliberating on which finish to select for your woodwork, polyurethane and marine varnish present two distinct options. Marine varnish is not only more durable than polyurethane but it also stands up better against UV rays due to its greater flexibility. Polyurethane does have a few advantages of its own; it is easier to apply and dries rapidly compared with the longer drying time typical of marine varnish. Polyurethane is more water-resistant than marine varnish and might be a wiser choice for projects that come in contact with moisture. Ultimately, the ideal decision between polyurethane or marine varnish relies on your specific project requirements as well as the wood you are working with.

How to Apply The Best Marine Varnish for Wood In 8 Steps

When it comes to applying marine varnish to wood, it is important to follow the right steps to ensure a smooth and long-lasting finish. Here are eight steps to consider:

Step 1: Sanding the wood

Before applying marine varnish, you need to sand the wood to create a smooth surface. Start with coarse sandpaper and gradually move to a finer grit sandpaper to create a smooth surface. Make sure to remove all the dust and debris using a vacuum or tack cloth.

Step 2: Cleaning the surface

The wood surface needs to be clean and free of any oils, dirt, or debris. Use a wood cleaner or denatured alcohol to clean the surface thoroughly.

Step 3: Applying the first coat

Apply the first coat of marine varnish using a brush, roller, or sprayer. Make sure to apply an even coat and follow the manufacturer’s instructions regarding the recommended thickness of the coat.

Step 4: Sanding between coats

After the first coat dries, sand the surface with fine-grit sandpaper. This will help the subsequent coats adhere better to the surface.

Step 5: Applying subsequent coats

Apply subsequent coats of marine varnish following the same process as the first coat. Make sure to apply thin coats and sand between coats.

Step 6: Sanding the final coat

After the final coat dries, sand the surface with very fine grit sandpaper. This will create a smooth and even surface for the final finish.

Step 7: Buffing the surface

Buff the surface using a buffing pad or cloth to create a glossy finish.

Step 8: Maintaining the finish

To maintain the finish of the marine varnish, make sure to clean the surface regularly and reapply a coat of varnish when necessary.

Tips for Maintaining Marine Varnish Finish

• Avoid exposing the wood to extreme temperatures or moisture: To keep your marine varnish finish looking its best, be sure to protect the wood from extreme temperatures and moisture. This involves staying away from direct sunlight as well as shielding it against rain, snowfall, or humidity. Neglecting this will cause the lacquer to crack or peel which can make for an unsightly outcome that is difficult to fix.
• Use a soft-bristled brush or microfiber cloth to clean the surface: To keep your wood looking pristine, it is essential to utilize a soft-bristled brush or microfiber cloth for cleaning. Refrain from using any abrasive scrub brushes or materials that could potentially scratch the finish and damage the varnish. Additionally, make sure you use a gentle cleaner specifically formulated for marine varnishes to simplify maintenance while effectively retaining its glossy luster.
• Avoid using harsh chemicals or abrasive materials: To preserve the elegance of your wooden furniture, be careful to avoid any harsh chemicals or abrasive materials. These can strip away the protective varnish and accelerate wear and tear on its surface. Instead, opt for a mild cleanser that won’t cause scratches or other damage when you clean it.
• Apply a fresh coat of varnish periodically to maintain the finish: Over the years, the marine varnish may become worn or lose its shine. To keep your wooden structures looking their best and well-protected, it is essential to apply a new coat of varnish on occasion. The frequency of this task depends on the level of utilization and exposure; however, as a general guideline, you should consider renewing the surface every 1-2 years for optimal results.
• Store the varnish in a cool, dry place to prolong its shelf life: Prolong the shelf life of your extra varnish and guarantee its usability for upcoming projects by storing it in a cool, dry place. Keeping it away from direct sunlight or humid environments is key as this could cause irreparable damage and render your leftovers unusable.
• Consider using a UV-resistant varnish: If your wood surface is exposed to a lot of sunlight, you may want to consider using a UV-resistant varnish. This type of varnish is specifically designed to protect against the damaging effects of the sun’s UV rays, which can cause the varnish to fade or break down over time.

Choosing the Right Brush for Applying Marine Varnish

Making the proper choice of the brush when applying marine varnish can prove to be invaluable. Natural bristle brushes make great use of animal hair, such as badger and hog bristles, while synthetic brushes are manufactured using a combination of nylon or polyester fibers. Deciding on which type is right for you will depend on your preferences and needs.

Natural bristle brushes offer several advantages, such as their capability to contain more varnish for even coating. Nonetheless, these brushes can be costly and are not suited for use with water-based varnishes. On the flip side, synthetic brushes provide a cost-effective option that is ideal for multiple types of coatings or finishes. When selecting a brush for marine varnish, the size and shape should also be taken into account. A tool that is too small may require more effort to apply correctly, while an oversized one can lead to excess drips and wasted varnish. Generally speaking, brushes between 2-3 inches wide are ideal for most applications involving marine varnish application; not only will this save time but money as well.

To guarantee a long lifetime and superior performance, it’s essential to mindfully maintain your brush. Following each use, your brush should be cleaned with the right solvent that is suitable for the type of varnish you employed. Subsequently, rinse and dry thoroughly before storing in an airy atmosphere devoid of moisture.

Reviews of the Top 10 Best Marine Varnish for Wood 1. TotalBoat Lust Matte Finish Marine Varnish   – Editors’ Pick

• MARINE GRADE VARNISH imparts a rich, clear amber tone that enhances wood grain; creates a durable, uv resistant, waterproof finish that won't fade; ideal for interior and exterior wood, brightwork on boats & outdoor furniture
• CLASSIC SPAR VARNISH WITH A MODERN TWIST: High-build, fast-drying formula allows rapid recoating, multiple coats per day and no sanding between coats; sand lightly before the final coat - be done in a little over 1 day
• FLEXIBLE COATING WON'T CRACK OR PEEL: Premium, oil-based marine polyurethane finish is not damaged when wood expands and contracts with changes in temperature; perfect for all types of wood
• EASY TO APPLY by brushing, rolling or spraying; For a high gloss varnish finish apply 6-8 coats of Lust Gloss; for a smooth satin finish, build with coats of Lust gloss varnish; use Lust Matte for the finish coats
• AVAILABLE IN HIGH GLOSS OR MATTE FINISH in Pint, Quart and Gallon sizes; Thinner: TotalBoat Special Brushing Thinner 100 (brushing/rolling) or TotalBoat Spray Thinner 101 (spraying); Coverage: 360-400 sq. ft./gallon

The TotalBoat Lust Matte Finish Marine Varnish is our Editors’ Pick because it’s water-based, easy to apply, and dries quickly. It imparts a smooth matte finish when applied to your best marine varnish for wood, making it resistant to scuffs, scratches, and discoloration caused by sun exposure. It’s oil-based, so it can be used on fiberglass or any exterior surface of your best marine varnish for wood including aluminum boats as well as a finish coat to other types of marine best marine varnishes without compromising adhesion.

• Available in quarts, gallons, and five-gallon containers
• A flat matte finish is ideal for exterior surfaces
• Dries to the touch in 30 minutes
• Can be recoated after six hours of dry time
• Contains UV inhibitors and stabilizers
• Water-soluble after it has dried
• Some surfaces might require two coats for full opacity

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2. Rust-Oleum 207008 Marine Spar Varnish, Quart

• Ideal for use on exterior wood surfaces above the water line, including trim, railings and wood furniture
• Oil-based formula expands and contracts with changing weather conditions
• Dries to the touch in 2 hours and covers up to 150 sq. ft.
• Durable coating provides excellent resistance to UV, salt and mildew
• Crystal-clear varnish leaves a beautiful gloss finish with maximum protection

Rust-Oleum Marine Varnish is the best marine varnish for wood with a high gloss, durable finish that can be applied on exterior surfaces. It dries quickly, offers superior UV protection that won’t yellow over time, and is oil-based for use with metal or fiberglass best marine varnishes for wood.

The UV- and weather-resistant qualities of this spar varnish make it durable in even the toughest conditions. The formula is designed to give the wood optimal protection against chemicals, sunlight, and water droplets. Because the varnish is so flexible, it can expand and contract with the seasons as needed, retaining its brilliant and superior appearance.

• Dries quickly
• The high gloss finish resists scuffs, scratches, and UV damage
• Safe to use on metal and fiberglass surfaces
• Consistency can be adjusted by adding thinner
• Must be applied to a completely dry surface or it will not adhere properly

3. Epifanes Clear Varnish – The Ultimate UV-Resistant Marine Varnish

• World famous, highest quality traditional tung oil marine spar varnish.
• Formulated with tung oil, phenolic and alkyd resins resulting in a finish that has superior flow, gloss, durability, and exceptional longevity.
• UV filters for superior protection with an ultra high gloss finish
• Used in many applications, both exterior and interior, household or marine, brushed, sprayed, or rolled and tipped.
• Use on new wood or restoring old wood to a deep clear finish, softwood or hardwood, marine or household applications.

Epifanes Clear Varnish is the best marine varnish for wood that offers protection from UV damage that won’t yellow over time. This clear varnish is non-yellowing and resists water and chemicals while giving the wood a tough, high-gloss finish with an easy application process. The UV-resistant qualities of this Epifanes marine varnish for wood ensure it lasts longer than others on the market today by protecting against harmful UV rays and can be applied by spray equipment.

Epifanes Clear Varnish is ideal for use on both interior and exterior surfaces, with a high-gloss finish that’s tough enough to withstand weathering from wind and water while providing superior resistance against scuffs, stains, and scratches, chips, or dirt accumulation. The varnish features excellent adhesion properties so it forms a tough, protective layer over the wood and prevents moisture from penetrating finished wood due to paste wax.

• Waterproof and resistant to scratches, scuffs, chemicals
• Tough, high-gloss finish
• Resists yellowing and moisture penetration
• Resists water and chemicals
• Best high gloss finish
• UV-resistant
• Not intended for use on fiberglass surfaces due to its oil-based formula

4. Epifanes Clear Varnish (250 ml)

• World famous, highest quality tradional tung oil marine spar varnish.

Epifanes Clear Varnish (250 ml) is the best marine varnish for wood with a clear finish that dries to a hard, durable film in just one coat. This varnish resists yellowing and moisture penetration while drying quickly to a tough, high-gloss finish that’s resistant to scuffs, stains, scratches, or dirt accumulation.

Epifanes Clear Varnish is ideal for both interior and exterior surfaces as it forms a protective layer over the wood. It is waterproof and resists yellowing, moisture penetration, or chemicals while drying quickly to a tough high-gloss finish that’s resistant to scuffs, stains, scratches, or dirt accumulation. The varnish features excellent adhesion properties so it forms a protective layer over the wood and prevents moisture from penetrating.

• A high gloss finish resists water and chemicals
• Long-lasting, durable finish that resists scratches and scuffs
• Waterproof when dry, resistant to scratches or dirt accumulation
• Not for use on fiberglass
• Requires sanding between layers

5. TotalBoat Lust High Gloss Marine Varnish

TotalBoat Lust High Gloss Marine Varnish is the best marine varnish for wood that is easy to apply and provides a high gloss finish. This varnish resists scuffs, stains, scratches, or dirt accumulation while drying in just one hour. The water-resistant qualities of this lust marine varnish for wood ensure it lasts longer than others on the market today by protecting against yellowing or moisture penetration over time.

• Waterproof and resistant to scuffs, stains, scratches, or dirt accumulation
• Glossy finish with no brush marks
• Resists yellowing over time
• Highly durable, long-lasting finish that resists chemicals
• Dries quickly (one hour)
• Too glossy for some applications

6. Valspar Spar Varnish

• Maximum U.V. Protection/Extra protection from sun and weather
• Use on interior and exterior wood surfaces to protect and beautify for years to come
• Water Resistant/Prevents Weather Damage - Clear Satin Finish
• Use on hand rails, Wood outdoor furniture, Interior window sills and frames, Planters, Lamp posts, Wood trim on boats (above water line)
• EPA banned in AK, CA, CT, DC, DE, HI, IL, IN, MA, MD, ME, NH, NJ, NY, OH, PA, RI, VA

Valspar Spar Varnish is another marine varnish for wood that dries quickly. This gloss spar varnish protects against scuffs, stains, scratches, or dirt accumulation while resisting yellowing over time. It also resists moisture penetration and is water-resistant when dry making it ideal for exterior use on wood surfaces that are exposed to the elements.

This high-gloss varnish is simple to apply and does not require sanding between coats because of its low porosity level. As a result, the varnish brings out the best finish in the wood while hiding its unsightly appearance.

• Waterproof finish
• Easy application with no brush marks
• Long-lasting finish that resists stains & scratches
• Spar varnish is less flexible than other finishes; not ideal for environments with extreme temperature changes.

7. Minwax 63200444 Spar Urethane Varnish

• PROTECTIVE CLEAR FINISH – Minwax Helmsman Spar Urethane is specially formulated as a protective varnish for wood for interior and exterior projects. It contains special UV blockers that reduce the sun’s graying and fading effects.
• EFFECTIVE YEAR ROUND – This wood varnish forms a protective barrier against rain and moisture to protect your projects and keep them looking their best. Special oils allow the finish to expand & contract with the wood as seasons and temperatures change.
• VERSATILE – Ideal for use on doors, windows, trim, bathroom cabinets, bar tops, kitchen countertops, outdoor furniture and more.
• GLOSS FINISH – Give your wood projects a sleek finish with this gloss varnish. It not only protects the natural beauty of the wood, but offers a shiny, sleek sheen for a modern look.
• A BRAND YOU CAN TRUST – Minwax is America’s leading brand of wood finishing and wood care products. Since 1904, we have been inspiring consumers to Keep on Finishing. We offer consumers a complete line of products to meet every wood finishing need.

Minwax Spar Urethane Varnish is a fast-drying urethane varnish that is easy to apply. This urethane marine varnish for wood provides a long-lasting finish with protection against moisture penetration. It also resists yellowing over time while resisting scuffs, stains, and scratches. This varnish dries quickly with a glossy finish that does not require sanding between coats because of its low level of porosity which helps it bring out the best in your wood surface.

• Waterproof when dry; protects against moisture penetration
• Easy application with no brush marks; resists scuffs, stains & scratches
• You will need to be fast with the application, as it dries quickly

How to Sand Wood for Marine Varnish Application

Before applying marine varnish to wood, it’s important to properly sand the surface. Sanding helps to remove any imperfections, smooth out rough patches, and create a clean and even surface for the varnish to adhere to. Here are some tips f sanding wood for marine varnish application:

Choosing the right sandpaper grit for different wood surfaces: The abrasive quality of sandpaper is determined by its coarseness or fineness. When prepping wood for marine varnish, a medium-grit paper between 100 and 120 should be used to achieve the required balance of smoothness and durability. For rougher materials, select something in the range between 80–100 while finer surfaces need higher grits from 120 up to 150.

The importance of proper sanding techniques: Sanding is best done with the natural grain of the wood, utilizing a back-and-forth pattern. To keep the sandpaper from creating patchy surfaces, make sure to continually move it in one direction following the grain’s lines – this will help preserve and protect your wooden material.

Tips for avoiding common sanding mistakes: A frequent mistake when sanding is applying too much force, which can cause the sandpaper to generate scratches or divots in the wood. Likewise, using an excessively fine grit of sandpaper too early on could make it difficult for varnish to stick securely onto the surface. Therefore you must be precise and take your time while sanding instead of rushing through it haphazardly.

How to Remove Marine Varnish from Wood

When it comes to removing marine varnish from wood, several methods can be used depending on the extent of the finish, the type of wood, and the tools available.

Tools and materials

• Chemical stripper
• Protective gear, such as gloves, goggles, and a respirator.

Here are four common methods for removing old varnish:

• Sanding: For those seeking to revitalize their aged varnish, sanding is the most popular method. By utilizing either a manual or electric sander, you can slowly strip away layers until the desired finish is achieved – all while avoiding toxic chemicals! It’s an effective way of purging old coats; however, it may be time-consuming and messy at times.
• Chemical stripping: Chemical strippers are remarkably effective solvents that dissolve existing varnish, making it easy to remove. Although quicker than sanding, this process requires extra preparation and can be quite messy. For safety reasons, read the product label carefully and wear protective clothing such as gloves at all times while using chemical strippers.
• Heat gun: For speed and ease in removing varnish from surfaces, a heat gun is an excellent tool. However, it’s important to take safety precautions when using this device. You must wear protective gloves and work in an area with proper ventilation to avoid any hazardous situations. With the right steps taken care of, simply use your putty knife or scraper to scrape away the softened varnish quickly and efficiently.
• Planing: With the use of a woodworking plane, you can easily remove the top layer of the surface and its varnish from flat surfaces or large areas. Although it requires some expertise to master this technique, practice makes perfect.

Tips for minimizing damage to the wood surface during varnish removal:

• Work slowly and carefully to avoid gouging the wood surface.
• Use a scraper or putty knife to gently remove the varnish, working with the grain of the wood.
• If using a heat gun, keep the nozzle moving and avoid focusing on one spot for too long to prevent scorching or burning the wood.
• If using a chemical stripper, follow the instructions carefully and avoid leaving the product on the wood for too long.
• When sanding, start with a coarse grit sandpaper and gradually work your way up to a finer grit to avoid scratching the wood surface.
• Use a sanding block or machine to ensure even sanding.
• Remove all dust and debris from the wood surface before applying a new finish.
• Consider seeking professional help if you’re unsure about how to proceed or if the wood surface is particularly delicate or valuable.

Environmental and Health Considerations When Using Marine Varnish

Marine varnish contains potentially hazardous chemicals that can have negative environmental and health impacts if not used and disposed of properly. Here are some environmental and health considerations to keep in mind when using marine varnish:

• Potential environmental impact: Applying marine varnish can be hazardous to the environment if not disposed of responsibly, as these chemicals may contaminate soil and water sources that are critical for plants and animals.
• Proper disposal: It is imperative to discard unutilized varnish and other materials correctly. Ensure you contact your local waste management institute to ascertain if they have special rules for disposing of hazardous substances such as varnish.
• Precautions in enclosed spaces: If you are applying varnish in a limited or not well-ventilated area, it is essential to take safety measures for your well-being. Wear a respirator and other security gear while ensuring there is an abundance of fresh air circulating throughout the space. Use of protective clothing and equipment: When applying marine varnish, it’s important to wear protective clothing like gloves and long sleeves to prevent skin contact. You should also wear eye protection and a respirator to avoid inhaling any fumes.
• Consider alternatives: If you worry about the environmental and health consequences of using marine varnish, why not switch to a more eco-friendly or non-toxic alternative? Look for labels that say low-VOC or water-based, but if those don’t appeal to you, consider natural finishes like oils or waxes instead.

What is the difference between marine varnish and regular varnish?

Marine varnish is specifically designed to withstand exposure to harsh marine environments, such as saltwater, UV rays, and moisture. It contains additives that provide extra protection against these elements. Regular varnish, on the other hand, is designed for interior use and provides less protection against environmental factors.

How many coats of marine varnish do I need to apply?

The number of coats of marine varnish needed depends on the level of protection desired and the condition of the wood surface. Typically, two to three coats are recommended, with sanding between each coat for better adhesion.

How long does marine varnish take to dry?

The drying time of marine varnish can vary depending on the product and environmental conditions. Typically, it can take 24 to 48 hours for each coat to dry. However, it is important to follow the manufacturer’s instructions for specific drying times.

Can I apply marine varnish over an oil-based finish?

Yes, it is possible to apply marine varnish over an oil-based finish, but it is important to ensure that the surface is clean and sanded for proper adhesion.

Can I apply marine varnish over painted wood?

No, it is not recommended to apply marine varnish over painted wood as it may not adhere properly and can result in an uneven or peeling finish.

How often do I need to maintain the marine varnish finish?

The maintenance frequency of the marine varnish finish depends on the level of exposure to environmental elements and wear and tear. Typically, a fresh coat of varnish may need to be applied every 1 to 2 years to maintain the protective finish. Regular cleaning and inspection of the surface can help identify any areas that need touch-ups or repairs.

The finest marine for wood is a must-have. When you want your furniture or boat to last as long as possible on wood finish , you should use the greatest marine varnish. The ideal marine varnish will preserve and enhance the appearance of your wood furnishings by giving them a glossy finish. Your furniture will endure longer without fading or losing its attractiveness.

RELATED: Top 5 Best Varnish for Plywood: Updated Reviews 2021

Reference: Wikipedia

How to Find the Best Marine Varnish

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Boats are dynamic vessels that provide comfort, luxury, and possibly income. You spent a lot of effort and money on them. As a boater, your main priority is to ensure that your vessel is in good working order so it can serve your needs.

The woodwork is a crucial component of the boat that demands special attention. If your boat’s woodwork isn’t adequately cared for, it could lead to discomfort and irreversible damage. Losing a boat to something as minor as damage from the sun, rain, or wind can be disheartening.

This article will provide you with all the necessary information to choose the best varnish for your boat. I also provide you with some varnishes that I recommend.

What is a Marine Varnish?

To begin with, a varnish is a protective coating you can use on woodwork. The varnish provides protection against sun, rain, or chemical damage.

Marine varnish is simply a type of varnish meant for watercraft. It is transparent, but sometimes it has yellowish or dark brownish shades. The shades usually come from how the manufacturer made the varnish or the material it is made with.

What is a Marine Varnish Used For?

Marine varnish is very similar to regular varnish. The only difference is that a marine varnish is used on watercraft, whereas normal varnishes are used on other surfaces.

Because boats are always outside and almost always on the sea, it’s a constant risk for sun damage, water, and other harmful elements.

Like I said earlier, the varnish protects against tiny scratches as well as weather-related severe damages. If the woodwork in your boat has no protection or proper maintenance, it dries out, making it vulnerable to potential damages.

Sometimes, these damages can be permanent and could cost a lot of money fixing or replacing the damaged part.

Furthermore, on the other hand, a marine varnish protects the wood and enhances its attractiveness. It makes it gleaming and glossy, giving your boat an elegant appearance. Also, nobody really likes to look at ugly dried wood.

What are Marine Varnishes Made of?

As a science geek, I usually like to know what is inside any product I get and what they do, especially when it has to do with something as big as a boat. So, if you happen to be as curious as I am, then here you go! But if you are not, feel free to skip to the next paragraph of this article.

Fundamentally, there are five main ingredients in marine varnish, and they are:

• Oil – The oil provides a soft, shiny, and natural look to the wood.
• Resin – Resins add a glossy effect to the wood. It also makes the color and grain of the wood shiny, giving it that elegant look.
• Solvent – Solvents serve two purposes. First, they can be used to melt down the resin to be applied to the wood. And secondly, they can also be used to thin the finishes, making them easier to apply.
• Driers – This helps the marine varnish to dry faster.
• Additives – The additives help the marine varnish last longer by protecting it from the sun. It is designed to protect the wood from the harmful effects of sunlight.

Factor to Determine When Choosing a Marine Varnish

In order to find the best marine varnish for your boat, there are a few things you must consider.

Here they are:

How Long Will it Last on the Boat?

As you know, the most important thing about any product is how long it can last. When it comes to marine varnishes, it is essential to understand the durability of the product. This is because the boat is constantly exposed to substances like rain, sun, etc.

Some marine varnishes last much longer when compared to others, and some require special procedures like extra coatings. At the same time, some last up to two to three years before recoats are needed.

So, when buying your marine varnish, I advise you to try to ask your dealer all questions you can think of about the durability of the product so you can make the right decision according to what you want.

How Long Will it Take to Dry ?

The second thing you should consider when looking for a marine varnish is how long it will take to dry.

If you happen to be working on a limited timeframe and need to have your boat completely coated and ready for use in a day or two, then this is a factor you should consider. In this case, you should only look for varnishes that dry much faster. Some dry in a matter of hours.

If you are not in a rush, you don’t have to worry about this so much. But still, look for marine varnishes that can serve your timeframe.

How Easy or Difficult is it to Use ?

I would advise you not to ignore how difficult or easy any product is to use, especially when it comes to marine varnishes. To avoid wasting a lot of money, please find out everything you can about the brands and how to use them. If it is what you can handle, then go for it!

How Glossy is It?

This might sound funny, but yeah, glossiness does matter a lot. Most times, high-glossed varnishes happen to be the best durable because of the thickness. Plus, it also adds to the attractiveness of boats. So, it is safe to say, the glossier the varnish, the better!

Top Ten Marine Varnishes

There are several marine varnishes on the market today. However, I have picked out the top ten products based on the criteria above (durability, drying ease, ease-of-use, and glossiness).

TotalBoat 482869 Lust Marine Varnish

The TotalBoat Lust is the brand’s top product and a top product in the marine varnish industry. Their varnish is extra thick, which provides your boat with maximum protection.

The TotalBoat marine varnish has a U.V. and weather resistance, which makes it the perfect choice for brightwork and more. U.V. means ultraviolet light, means the sun.

The TotalBoat Lust marine varnish is the first one-part marine spar varnish. Usually, when applying varnish on the wood, after each coating dries, you are supposed to scrape the surface with sandpaper so the next coat can stick. However, you don’t need to do that with the TotalBoat Lust because it’s a one-part varnish.

Aside from the safety and convenience features of this product, it does enhance the beauty of the wood. Due to the thickness of this product, it’s able to give your boat an elegant look by adding the shine and glossy effect.

Pros and Cons

The TotalBoat lust marine varnish is an excellent product, but it has a few downsides.

Here we discuss a few pros and cons of the products, which will help you decide if it is something you can handle or not.

• Easy to use – Generally, the product is easy for anyone familiar with varnishes. But if you’re not very familiar with this, don’t worry, it becomes easier as you practice.
• Durable – Because the product is an oil-based formula, the wood will not crack or peel when it’s exposed to change in temperature or weather. It is compatible with all types of wood.
• Good shine and finish – This product provides a clear tone, enhancing the wood grain and lasting longer.
• U.V. and Weather Resistant – Provides reliable U.V. resistance and waterproofing to the wood.
• Dries Quickly – When applied on the wood surface, the TotalBoat Lust marine varnish dries very quickly in a matter of hours. This makes it an excellent choice for you if you’re working on a limited time frame and you need to be done in a day or two.
• Versatile – This can be used almost everywhere. It can be used on the interior, exterior, and bright works on boats.
• Enhances Wood Appearance – It enhances the appearance of your boat by brightening the color, adding glossy effects.
• Requires a lot – Because of the extremely thick nature of the TotalBoat lust marine varnish, you have to apply a lot of it to cover every area.
• Not Ideal for Beginners – Because this product is extremely thick, you’ll need to thin it down to at least 50% before use. A beginner would likely miss this.
• Low Shelf life – It cannot be stored for a long time, so it must be used on time.

The TotalBoat 482869 Lust Marine Varnish comes in two sizes:

• Quart – The quart cost about $68.50
• Gallon – The Gallon costs about $167.12

The prices are the same for both satin and matte.

Rust-Oleum 207008 Marine Spar Varnish

This is similar to the TotalBoat Lust marine varnish. If all you want is straight-up protection from the sun and moist conditions, then the rust-oleum marine spar varnish is for you.

This product is made to protect the wood from weather damages, and it is very reliable. It can be used on any type of wood in the sailboat. It also enhances the appearance of your boat with glossiness.

The Rust-Oleum marine spar is easy to use as long as you thin it down to 10% to 30%. It dries up quickly when applied to the wood, and there would still be enough to go around.

I recommend getting a new foam brush to get the best result with this product. Using the brush with every coat makes the finish very smooth. Also, it can help it last longer.

• Very Strong U.V. and water protection – Provides excellent protection again U.V. rays, water, and harmful moisture.
• Excellent Finish – Offers an excellent finish.
• Easy to Use – Does not require any complicated procedure for application.
• Good For Beginners – This product is generally very easy to use.
• Highly Efficient – This product performs just as well as other top marine varnishes at a lower price.
• Low Shelf Life – Cannot be stored for a long time, so it has to be used on time.
• Quart – The quart costs about $23.00
• Gallon – The gallon costs about $00.00

System Three 1855S16 Marine Varnish

Like every other marine varnish on this list, the System Three marine varnish is good. However, the unique feature about this is how long it can last. So if durability is your top priority with a little bit of everything, then this is the way to go.

According to costumers reviews and researches, this is the best when it comes to durability. In a typical case, three years is the highest a varnish can last before it begins to show signs of a recoat. However, the System Three marine varnish can last up to 3 and a half years without undergoing significant peeling or cracking.

It also provides excellent U.V. and water protection, with a very attractive finish. You can thin it down if you want, but you don’t need to thin it if you use an HVLP spray gun.

But keep in mind that it does not dry very quickly with a thinner. So if you happen to be working a limited time frame, this isn’t the best option.

• Excellent Durability – Product will withstand the elements for a long time.
• Very attractive finish – Glossy nature of this product makes your boat more attractive.
• Easy to apply with a sprayer – It is easy to use with a spray gun.
• Has Gloss and Satin Options – Comes in gloss and satin options, so you can whichever one you prefer.
• Does not dry very q uickly – Without a thinner, this product dries very slowly.
• Not easy to use without a spray gun – Without a spray gun, you might find it challenging to use.
• Quart – The quart costs about $40.00
• Gallon – The gallon is about $81.00

Epifanes CV.500 Clear Varnish

In the boating industry, a lot of people like this particular product. It provides durability to the boat as much as it gives an excellent finish. If you want your boat adequately maintained while looking good, you might want to consider this.

The Epifanes Clear Varnish is the best when it comes to providing your boat with an attractive finish.

Apart from the durability and the finish, it is also easy to apply. Although you can if you want, you don’t really need to sand every coating, except for the last one, which guarantees a smooth finish.

And of course, it does provide excellent U.V. protection; it Is a marine varnish, after all. It is also compatible with all kinds of wood, and its finish can last up to 2 years.

• Very g ood s hine and f inish – It enhances the beauty of your boat with a very shine and finishes.
• Excellent U.V. p rotection
• Easy to u se – Does not require any complicated procedures for application.
• Does not dry very quickly – It takes a long time to dry, so it may not be the best option if you are working on a limited time frame.
• Low Shelf Life – It cannot be stored for a long time, so it must be used on time.
• Quart – The quart costs about $36.39
• Gallon – This gallon costs about $73.26

TotalBoat Gleam Marine Spar Varnish

The TotalBoat Gleam marine spar varnish is another product from the TotalBoat brand, just like the TotalBoat Lust marine varnish.

The TotalBoat Gleam marine spar varnish is considered the most versatile of them all. It is a combination of ease of use, fantastic finish, and above-average durability. It comes in different finishes and sizes, so you can choose the exact one you need for your project.

Unfortunately, the TotalBoat Gleam marine varnish is not as strong as the Lust. The finish can last up to 2 years, and sometimes less, if your wood is constantly exposed to elements.

• Versatile – Can be used both on the boat and household wood.
• Very good satin finish – Provides a very smooth and clear satin finish.
• High g loss protection – Because it’s glossy, it provides maximum protection against easy damages such as scratches, etc.
• Not complicated to use – This product is very easy to use, as long as you thin it out properly.
• Comes in v arieties of shine and sizes – This product offers multiple options for different shines and finish such as glossy, satin, etc.
• Not very durable – This product does not last very long under tough elements.
• Quart – The quart costs about $24.99
• Gallon – This gallon costs about $109.99

McCloskey 7509 Man O’War Spar Marine Varnish

This marine varnish offers durability, deep ember tint, caramelization, and versatility.

Although it takes a long time to dry, it is very easy to use. It provides excellent U.V. protection and is waterproof. Also, it is suitable for both indoor and outdoor use.

This protection has a positive reputation for professional sailors. This can last for a few years without showing any signs of flaking, chalking, cracking, or peeling.

• Excellent U.V. Protection – Provides maximum products again sum rays.
• High r esistance to b ad weather – This product is resistant to water, salty air, and bad weather.
• Good finish – Maintains the excellent appearance of the wooden surfaces.
• Good s atin f inish – Creates a clear satin finish.
• Versatile – Can be used on both boats and household wood.
• Easy to use and clean – This product is easy to apply and clean.
• Needs sanding – Requires a little sanding after each coating.
• Limited Availability – It is not always on the market.
• Slow Drying – This product takes a little longer to dry.
• Quart – The quart costs about $32.48
• Gallon – This gallon costs about $95.00

Epifanes WFM.500 Wood Finish Matte

The main charm of the Epifanes WFM.500 Wood Finish Matte is its marine-grade durability. It provides excellent U.V. protection for hardwood. So if you are working with a hardwood such as teak, you should consider this.

The Epifanes WFM500 Wood Finish Matte also offers an excellent finish. It enhances the attractiveness of the boat by giving it a lovely satin sheen and soft matte effect.

Aside from the nice things this product offers, it is not the best start for a beginner, unfortunately. It requires a lot of attention. It has to be thinned appropriately, applied evenly with every coating, and quickly.

• Excellent durability:  This product lasts very long.
• U.V. Protection:  Offer protects against sun rays.
• Good satin and matte finish:  Offers a very good satin and soft matte finish.
• Flows Smoothing – Flows very smooth without thinning.
• Enhances the attractiveness of the boat – It brings out the beauty of the wood very well.
• Requires q uick application – You have to apply the product very quickly, especially if it isn’t thinned.
• Not b eginner-friendly – It might be complicated for a beginner.
• Quart – The quart costs about $31.87
• Gallon – This gallon costs about $87.75

Minwax 63200444 Helmsman Spar Urethane

The Minwax offers just about everything you need from a marine varnish. It is very durable, easy to use, and provides a good shine.

The Minwax marine varnish can be used on both the interior and exterior woodwork on the boat. It provides a protective barrier again rain and moisture when applied to the wood.

• Easy – to – use – It is generally easy to use.
• Beginner – f riendly – It is not complicated to use for beginners.
• Good enough durability – Just as durable as average marine varnishes.
• Dries quickly – Although it is an oil-based product, the Minwax dries very quickly.
• Not m arine- g rade – It is not precisely a marine grade varnish, so it might not be very effective.
• Affects the color of the wood – It makes the wood look a bit darker.
• Quart – The quart costs about $19.00
• Gallon – This gallon costs about $65.99

Rust-Oleum 250141H Ultimate Spar

If you look for the perfect marine varnish for exterior wood, this might interest you. The durability is good, and it offers maximum protection from mold, scratches, U.V. damages, and rough water.

It also offers a very good glossy finish, which you may need to maintain by cleaning with soap and water. This will keep the gloss as its optimal appearance.

• High durability – Like most Rust-Oleum marine varnishes, this is also very durable.
• Water and bad weather resistance – High water resistance and harmful moisture resistance.
• Can be cleaned – You can wash with soap and water because it is high water and moisture resistant.
• Good for interior and exterior areas – This product can be used both on the interior and exterior areas of the boat.
• Dries faster – Does not take time to dry.
• Three finish choices – It comes in three finish choices: satin, gloss, and semi-gloss.
• Affect the color of the wood – When the temperature is over 90 degrees Fahrenheit, it turns into a white tint.
• Quart – The quart costs about $34.00
• Gallon – This gallon costs about $

Duralux M738-1 Spar Varnish

The Duralux M738-1 Spar Varnish is known for its durability and versatility. If you are looking for a marine varnish on the exterior areas, maximum protection and durability is usually the goal. This product provides you with both.

When applied, Duralux M738-1 Spar Varnish can keep your boat protected and shiny for a year and a half and more. The shine is excellent, and the finish is pretty decent.

Duralux M738-1 Spar Varnish does require regular sanding after coating. However, it does not yellow over time.

• Good enough durability – This product offers very decent durability.
• Good finish – Provides a satisfying finish and shine.
• Easy-to-use – Not complicated to use.
• Does not yellow – Does not yellow over time.
• Does not dry quickly – It takes time to dry.
• Quart – The quart costs about $23.00
• Gallon – This gallon costs about $67.00

The Most Reliable Marine Varnish Brands

Evidently, we can see that there are numerous marine varnish brands on the market today. But, in order to make the selection easier for you, I have highlighted the most trusted brands. These ratings are based not only on my opinions but also on professional sailors and consumers. Here they are:

Answer : An average marine varnish dries to touch in 4 to 6 hours. But, under normal conditions, you should it to last from 8 to 16 hours before recoating.

Answer : Although some marine varnishes are so good, you may not need to sand as much or at all. But, in a normal case, it is always good to sand between coatings. Sanding does two things to the finish: first, it brings down any high knocks, making it smooth and even. And second, it creates tooth for the next coating so it can stick.

Answer : It totally depends in the thickness of the coating. For thin coats, they usually dry within 24 hours.  Also, it depends on the product you are using, I recommend you ask your dealer or a specialist for complete specifications.

Answer : Drying is when the solvent evaporates from the surface of the film, leaving it yack free. When leftover solvents are removed from the film, it begins to bind with oxygen in the air, resulting in increased strength, toughness, damage tolerance, and chemical resistance.

Answer : It depends on what type of stain. Marine varnishes are meant for exterior woods, and it can be used on unfinished wood surfaces. Both of which are likely to be stained, but they all have to be a dried completely.

Answer : Varnish can only adhere to a water-based paint . If, however, the surface you want to paint has oil-based paint on it, then you have to put a water-based primer to it, before applying varnish.

Answer : Yes it is. Marine varnish is a natural oil based products, designed to protect the wood on our boats.

Answer : Generally, it does not. However, some marine varnishes does affect the color of the wood. Some give it a yellowish shade, and some makes it darker while some are just transparent. Also it depends on the thickness the varnish.

Answer : For an average marine varnish, it can last up to 2 to 2 and a half years. While some really good ones can last up to 3 to 3 and a half years.

Marine varnishes are very important, especially if you care about the wellbeing of your boat. Today, there are so many brands producing all kinds of marine varnishes.

This makes it challenging to get the perfect one for you, especially if you don’t know much about marine varnishes. I have highlighted the top ten marine varnishes in this article with their features, pros, and cons. This will help you decide which one is best for you.

I like the TotalBoat 482869 Lust marine varnish the most. It provides maximum wood protection while equally enhancing the appearance. The high glossy nature of this product total helps it accomplish this effect.

If you think like you can handle the thickness of the product, I don’t see you facing much challenges with its application.

Looking for more interesting readings? Check out:

• How to Find the Best Marine Epoxy Paint
• How to Find the Best Boat Cleats: Our Top 6 Picks!
• How to Find the Best Pontoon Boat Grill: Factors to Consider

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How to Use Yacht Varnish? (A Step-by-Step Guide)

Are you looking for a way to give your boat a polished, professional finish? Yacht varnish provides a layer of protection and a beautiful shine that wont fade over time.

In this step-by-step guide, well explain what yacht varnish is, the benefits of using it, and how you can apply it to your boat.

Well also discuss preparation, application, drying, and sanding between coats, so you can be sure your boat is looking its best.

So, if youre ready to learn how to use yacht varnish, lets get started!.

Table of Contents

Short Answer

Yacht varnish is a protective coating used to seal and protect wood surfaces on boats.

To apply yacht varnish, start by sanding the wood surface with a fine-grit sandpaper.

Then, apply a thin coat of the varnish with a brush, working in long, even strokes.

Allow the varnish to dry for 24 hours before applying a second coat.

Finally, sand the surface with very fine sandpaper before buffing it with a soft cloth.

What is Yacht Varnish?

Yacht varnish is a specialized wood finish designed to protect outdoor wood surfaces from moisture and UV damage.

It typically consists of a blend of resins, oils, and solvents that provide a tough, yet flexible coating, which is ideal for protecting boat decks, outdoor furniture, and other wood surfaces that are exposed to the elements.

Yacht varnish also provides a glossy, attractive finish that enhances the beauty of the wood.

Unlike paint, yacht varnish does not completely cover the wood, allowing the natural grain of the wood to show through.

It is also relatively easy to apply and maintain, making it a popular choice for marine and outdoor wood surfaces.

Benefits of Yacht Varnish

When it comes to protecting outdoor wood surfaces, yacht varnish is an excellent choice.

Not only does it protect the wood from moisture and UV damage, but it also adds a beautiful shine and luster to the wood.

Yacht varnish is a long-lasting coating that can provide years of protection under the right conditions.

It is also easy to apply and can be used on a variety of wood surfaces, including boats, decks, and other outdoor wood surfaces.

When applied correctly, yacht varnish offers many benefits.

It forms a protective barrier against moisture and UV damage, preventing fading, cracking, warping, and other damage that can occur with prolonged exposure to the elements.

The coating also helps keep the wood from rotting, which can be an issue if the wood isn’t properly sealed.

Finally, the varnish adds a beautiful shine and luster to the wood, making it look like new.

Yacht varnish is also easy to apply and can be used on a variety of wood surfaces.

It is a great choice for any outdoor wood surface, including boats, decks, furniture, and more.

It is also relatively inexpensive and can be found at most home improvement stores.

With the right application, yacht varnish can provide years of protection and a beautiful finish to any outdoor wood surface.

Preparing the Wood Surface

Before applying yacht varnish, it is important to properly prepare the wood surface.

The surface should be thoroughly cleaned and dried, and any old varnish should be removed.

Sanding the wood will also help to ensure a smooth, even finish.

It is important to use the correct type of sandpaper for the project.

For instance, a medium-grit sandpaper is suitable for most wood surfaces, while a finer grit may be necessary for surfaces that require a more delicate finish.

Once the surface is prepared, it should be wiped down with a damp cloth to remove any dust or debris.

This will help ensure a successful application of yacht varnish.

Applying the Varnish

When it comes to applying yacht varnish, its important to understand the steps involved in the process.

First, the wood surface should be clean, dry, and sanded.

This ensures that the varnish will adhere properly and will provide maximum protection.

Next, apply a thin coat of varnish with a natural-bristle brush.

This helps to ensure even coverage and minimal brush strokes.

Allow the varnish to dry before applying a second coat.

Its important to allow the varnish to dry completely before applying any additional coats.

Sand lightly between coats to help ensure an even surface.

Additional coats should be applied as needed, but always be sure to allow the varnish to dry completely before exposing the surface to the elements.

With proper application, yacht varnish will protect your outdoor wood surfaces for years to come.

Allowing the Varnish to Dry

When it comes to yacht varnish, it is important to allow the varnish to dry completely before exposing the surface to the elements.

This will ensure that the varnish is properly bonded to the wood and will provide optimal protection from moisture and UV damage.

It is best to allow the varnish to dry for at least 24 hours before applying a second coat.

The drying time will also depend on the temperature and humidity of your environment, so it is important to allow for extra time if these conditions are not ideal.

Once the varnish is dry, it is recommended to lightly sand the surface before applying a second coat.

This will help to ensure that the varnish bonds properly and that the finish is even and smooth.

If additional coats are needed, the process should be repeated.

It is important to allow the varnish to dry completely between each coat, as this will ensure that the varnish fully bonds with the wood.

For best results, allow the varnish to dry for at least 48 hours before exposing the surface to the elements.

By allowing the yacht varnish to dry completely, you can be sure that the wood is properly protected and that the finish will last for years to come.

Sanding between Coats

Sanding between coats is an important step when applying yacht varnish.

After each coat of varnish is applied and has dried, the surface should be lightly sanded to remove any imperfections.

Sanding helps create a smooth, even finish and provides more effective protection against moisture and UV damage.

It also helps ensure that the next coat of varnish adheres properly to the surface.

When sanding between coats, use a fine-grit sandpaper (preferably around 320-400 grit) and sand in the direction of the wood grain.

This helps prevent scratches and other damage to the wood.

Be sure to only sand lightly, as sanding too aggressively can damage the wood and reduce the effectiveness of the varnish.

After sanding, use a clean cloth or brush to remove any dust or debris from the surface.

This will help ensure that the varnish adheres properly and provides the best possible protection.

Once the surface is clean, apply the next coat of varnish as normal.

With proper sanding between coats, yacht varnish will provide effective protection and lasting results.

Applying Additional Coats

Once you have applied the first coat of yacht varnish, it is important to apply additional coats for the best protection.

Depending on the specific product you are using, you may need to apply anywhere from two to seven coats.

It is important to allow the first coat to dry completely before applying any additional coats.

When applying additional coats, it is recommended to lightly sand the surface between each application.

This will help ensure a smooth, even finish and allow the varnish to adhere better.

After sanding, be sure to remove any dust or debris before applying the next coat.

When applying multiple coats of yacht varnish, it is important to use the same type of brush and same technique each time.

This will help ensure a consistent finish.

For example, if you used a natural-bristle brush when applying the first coat, it is recommended to use the same type of brush for subsequent coats.

Additionally, use long, even strokes when applying the varnish.

It is important to note that you should avoid applying too many coats of yacht varnish.

Too many coats can cause the varnish to become too thick and may make the surface appear uneven.

Generally, three to four coats should be more than enough.

Once you have finished applying the desired number of coats, allow the varnish to dry completely before exposing the surface to the elements.

With proper application and care, yacht varnish will help protect your outdoor wood surfaces for years to come.

Final Thoughts

Yacht varnish is a great way to protect your outdoor wood surfaces from moisture and UV damage.

Its important to apply yacht varnish correctly in order to get the best results.

Start by preparing the wood surface, then apply a thin coat with a natural-bristle brush.

Allow the varnish to dry before sanding and applying additional coats as needed.

With proper application, you can enjoy your outdoor wood surfaces for years to come.

Now that you know how to use yacht varnish, why not give it a try on your next project?.

James Frami

At the age of 15, he and four other friends from his neighborhood constructed their first boat. He has been sailing for almost 30 years and has a wealth of knowledge that he wants to share with others.

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What’s The Best Varnish For Your Yacht?

Written by Abigail Meadow - Tuesday, June 01, 2021

Varnishing your yacht is essential to protect it from the elements and preserve its longevity. As wood is a natural product, it’ll break down and become damaged when exposed to moisture, general pollution, and UV rays. Varnish creates a barrier against all of these things, gives your yacht a beautiful finish and makes it easier to clean.

The best way to prevent damage to your boat is to touch up any breakage in the wood as soon as you notice it. Doing this will prevent water from soaking into the wood. Generally, it’s good to varnish your yacht every one to two years.

However, varnishing isn't a simple task, as there’s a large selection of boat varnishes to choose from. Gaining an understanding of the qualities of different types of varnish is essential so you can choose the ideal one for your boat.

Here, we reveal which varnish is best suited to your yacht.

1. How to varnish

Wood must be sanded before finishing – slow and steady is the way to go with sanding. Don’t dig into lower grooves, as it’s important to create even layers when sanding. Otherwise, when the varnish sits on top, it won’t have the professional finish you’re looking for.

When you’re finished sanding, wipe any excess dust with a super soft brush, as you don’t want to varnish over small sharp wood. Some woods, such as teak, are rich in natural oils, so it’s a good idea to wipe the wood with a solvent such as acetone after the final round of sanding. This dissolves the surface oils and helps with finish adhesion.

Once you’ve finished sanding, use a paintbrush and coat the wood in the varnish. It’s important to be precise with varnish and coat every part of the wood thoroughly.

2. Choosing the right finish

Some woods such as teak, cedar, and oak can be left unfinished. These woods are decay-resistant, but adding a varnish finishing enhances its appearance, so most owners still choose to use varnish.

Tropical hardwoods such as cocobolo and lignum vitae are difficult to finish with varnish, as oil-based varnishes won't dry properly when placed on top. If you have a teak deck, it's best to leave it bare, but you should clean the surface regularly with liquid soap or a specific teak deck cleaner. Don't use a stiff or wire brush or rub with the grain when you clean, as this is too harsh. Avoid the temptation to pressure wash your yacht, as doing this will damage and weaken the wood.

The advantage of unfinished wood is that you’ll never have to refinish it; if installed properly, it can last years. Most boat owners prefer the sheen of an oil or film finish, even though this is unnecessary.

3. Tung Oil Varnish

Tung oil boat varnish is what some yacht owners refer to as the classic varnish. It’s referred to in this way because if you’re unsure of what your boat needs, this is a classic, middle of the road, safe bet.

The base and main ingredient of tung varnish is a natural oil, mixed with other things such as solvents, resins, and UV protectors. This type of varnish is flexible and can protect the wood from water, staining, and heat damage.

Over time, however, this type of varnish will crack off the surface, at which point you’ll need to recover the boat in varnish again.

4. One-part polyurethane varnish

Today, most varnishes use blends of synthetic resins such as polyurethane, phenolic, or alkyd polyester. Polyurethane is also known as urethane and is more durable than the other resins.

One-part polyurethane varnish produces just as good a finished result as tung oil and offers the same amount of protection, but is much more durable. Due to its strength, this type of varnish is often used for interior wood flooring.

Due to its rigidity, one-part polyurethane shouldn’t be used on highly flexible areas such as spars, as it can crack and be rendered useless.

5. Two-part polyurethane boat varnish

This varnish consists of two products that have to be mixed. Such as an epoxy resin – listed below, and polyurethane varnish.

This type of varnish is extremely tough, offers very good protection from moisture and UV damage, and helps protect areas prone to damage.

Two-component polyurethane coatings offer better results than single-component ones. In fact, they can guarantee greater resistance to abrasion and chemical agents, high durability, and higher conservation of the coating film.

Again, due to its hardness, two-part polyurethane boat varnish shouldn’t be used on highly flexible woo. That’s because it could crack, leaving room for water to damage the wood.

6. Epoxy resin

Epoxy resin can be used to coat timber, but it generally has poor resistance to UV light. Usually, another varnish tends to be applied over the top, as boats are exposed to a high level of UV rays, especially in the summer months.

At this point, we should advise you to beware of inexpensive yacht varnish sold in various DIY shops . Lower prices are usually an indication of extended drying times or poor long-term performance when on the water.

Specialist yacht insurance from Insure4Boats

Of course, there’s more than one way of taking care of your vessel. One of the most important forms of protection for your yacht is insurance – this is where we come in.

After taking such good care of your vessel and varnishing it to perfection, it’s vital to protect it if any issues occur. Our specialist yacht insurance covers the damage and theft of your yacht and includes Personal Accident cover if you have suffered a serious injury as a result of an accident whilst out at sea.

What’s more, as part of the  Ripe Guarantee , we promise to provide you with great cover and fantastic service at the best possible price. We let you tailor your policy, so you’ll never pay for more than the cover you need.

Find out more about our specialist yacht insurance here .

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Please note the information provided on this page should not be taken as advice and has been written as a matter of opinion. For more on insurance cover and policy wording, see our homepage.

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The Best Marine Varnishes for 2024

Boats often come in contact with a lot of different pressures such as waters, rocks, and even animals. On top of this, it is also exposed to the sun’s harmful UV rays all of the time. With this, the need for marine varnish became extremely popular among boat owners. It is actually one of the most effective things that any boat owner can do to preserve the beauty of their boat.

However, it is not that easy to find the perfect marine varnish that will work wonders for our boats. We have to experience a lot of trial and errors before we finally find what specific marine varnish is best for our lovely ships.

Do you want to keep your boat as pristine as possible? Read on to know about the top 10 best marine varnishes!

1. Rust-Oleum 207008 Marine Spar Varnish

2. epifanes clear varnish, 3. totalboat lust marine varnish, 4. system three 1855s16 marine spar varnish, 5. minwax 630500444 helmsman spar urethane, 6. interlux iva316/qt cetol natural teak varnish, 7. mccloskey man o’war spar marine varnish, 8. old masters 92304 spar marine varnish, 9. pettit captains varnish, 10. interlux y60/pt goldspar satin varnish, who is this for, factors to consider when buying a marine varnish, advantages and disadvantages of using a marine varnish, care and maintenance, frequently asked questions, best marine varnish reviews.

I was so stunned by this beautiful marine varnish! When I received it, I could immediately tell that it will perform amazingly. I sincerely appreciate that the company made sure that the application process will be easy! All I needed was a foam paintbrush to apply it on my boat’s surface and a good quality sanding sponge to smooth out the wood surface for a clean and even coat.

Unlike other varnishes, the company advises its customers to skip the thinner before using this product because it will affect the varnish’s performance by prolonging the drying time and increasing the chances of bubble formation.

Now, the most notable thing that I love about this product is that it dries so quickly! After the 1st layer that I applied on my boat, it only took roughly 2 hours for the spar varnish to dry. I am so flabbergasted because it was so convenient to use!

I love how I did not need to wait for at least 12 hours just to apply the 2nd coat of this marine varnish! This is such a good deal because not everyone has the time to let the varnish sink in. Although, you still have to sand the boat before applying the 2nd layer of varnish so that your application will glide as smoothly as butter!

As an oil-based marine varnish, it is better than a water-based marine varnish because it provides a more vivid color with a shine that does not look dull! Even though it is a little bit runny, its consistency does not affect its performance because it is oil-based. It sticks to the wood more comfortably, which is actually one of the reasons why it dries quicker!

• It does not require a thinning agent.
• Even application
• A quick drying time of 2 hours
• Can do two coats in one day
• Vivid and shiny
• It has a runny consistency

I have nothing to say but outstanding! I cannot get over the fact that this marine grade spar varnish performs exceptionally well. I am so excited to use this on my other boats because I’m sure that it will provide the perfect coating for protection and aesthetics!

First of all, I love how this product does not smell too strong! That’s one of the many things that I love about this epifanes marine spar varnish. Because of my countless attempts at finding the best spar varnish, I know how stinky some varnishes could be. It really is a hassle because some products have strong smells that give me a headache.

But this one was delightful to use because it almost does not have a strong chemical smell! I spent a lot of time using this spar varnish, and I can safely say that I did not experience any headaches.

I used a thinning agent before the first coat for this varnish because this product’s consistency is quite thick, almost similar to a syrup’s texture. Doing this resulted in a deep, high-gloss, and smooth finish! I cannot get enough of how beautiful the finished product is.

The company recommends a total of 8 coats, but I achieved my desired deepness and intensity with just five coats. Because of this, I have enough left varnish left for future use, which I sincerely appreciate!

I especially love that this product gives off a dark amber color. I prefer this type of finish because it made my boat look rustic yet fresh at the same time! And because it is on the darker side, it can cover old stains that may be present on your boat, so technically, it is a varnish and a light paint in one!

The wood on my boat started to look really nice once the spar varnish has dried. At the end of the day, it looked brand-new and ready to take on the fiery waters!

• It does not smell too strong.
• It did not give me headaches due to the chemical scent.
• Thick consistency
• Varnish and paint in one
• The recommended number of coats is 8

I think that is such a steal! For just half the container, I was able to apply five coats, and my boat looked very beautiful instantly. If I were you, I would get my hands on this beautiful spar varnish!

I received this totalboat gleam marine spar varnish; it was love at first sight! I immediately started to use it, and upon the initial application, I love how it enhances the woodgrain feature of my boat. Unlike other spar varnishes, this one does not try to eliminate the texture of wood; it makes it look more pleasing to the eyes!

Another thing that made my heart fall for this varnish is that it does not require the use of a sanding sponge or sandpaper. As I said, it aims to enhance the wood’s texture, so there is no need to even it out.

I also enjoy how with just six coats, I was able to finish varnishing my entire boat in one day. This made me fall head over heels for this product!

I also appreciate that this product features a slight tint that improves the overall design of the boat. No, it does not entirely cover up the boat’s original color; it makes the actual color brighter and more alive. I have had some experience with varnishes that dulls down the boat’s original hue, so I am happy that this one does not do that!

Lastly, the company offers two different types of varnish – one matte and one high gloss. Personally, I prefer a high gloss spar varnish because it lessens the appearance of scratches. However, some people enjoy matte varnishes, so kudos to TotalBoat for providing boat owners such as me with options!

Although it is quite thick, and I had to reapply varnish on some parts because, for some reason, the material does not adhere to it, I was still left with a beautifully-varnished boat at the end of the day!

• Improved my boat’s woodgrain texture
• It does not require sanding.
• Enhanced the color of the boat
• It has two different kinds of varnish
• I had to reapply varnish on several areas

To sum it up, I am so glad that I was able to try this product! For such a long time, I have been looking for the varnish that has a perfect balance between tint and gloss, and I finally found it in this product!

Upon receiving the product, I ordered both variants: satin and high shine. I decided to combine the two types of finish to get a more solid hue without losing the varnish glossiness.

I think I made the right decision! The end product is exceptionally smooth, glossy, and stable at the same time. I love how it is as soft as a baby’s butt… maybe even softer!

Because its consistency is quite thick, I used an HV/LP sprayer to apply it. This product applies like a dream. I’ve never used a marine varnish as smooth as this before. Therefore, the use of a thinning agent is totally necessary since it is viscous.

I also find its consistency to be quite thick. I love how this product really gave me the option to have my varnish on the thicker side or on, the thinner side. Well, I opted to thin it out a little bit using a thinning agent.

I love how it applies! For me, I would not use a bristled paintbrush with this product because there is a chance for bubble formation and streaky application. So, I used an HV/LP sprayer to apply it, and I honestly did not get tired at all!

I got so excited because I have never used a marine varnish that was as smooth as this before! I personally prefer mixing it with a thinning agent for the sprayer, but if you want it to be thicker, you may want to use a new paint roller to do the job.

Even though this does not dry as quickly as the other spar varnishes I have tried, I think those good things really do come to those who wait. As I used this product, I learned to be patient and to keep on trusting the process.

In the end, I got the best-looking boat ever! On top of that, this one also has superior saltwater protection for my boat. I can honestly tell you this: I think this is such a great deal!

• Available in satin and high shine
• Thick consistency for fuller application
• Best used with a paint sprayer
• Saltwater protection
• Excellent finish if both variants are mixed.
• Long drying time

Honestly, I think I got such an excellent deal with this product. This could easily be the best marine varnish UV protection!

This one is for the boat owners who prefer marine varnishes without any tint! This product from Minwax is a water based marine varnish, and this means that it is a clear gloss that does not have any color to it.

I love how this could be used on top of colored boats. Since it does not alter the existing shade that the ship has, this is a good option for those who prefer to maintain the current color, brightness, and contrast of their boats.

Its consistency is thin, mostly because it is water based. With this, I used a paint roller. I got the most seamless application because a thin consistency goes well with a roller! I am in awe that I only had to use a sanding sponge or sandpaper before applying the first coat. The succeeding layers did not require any sanding because they glide on like a dream!

Overall, it took me a total of 4 coats to get an excellent finish. However, I added an extra layer to be sure that the end product will be as beautiful and vibrant as possible.

I love how to apply this even over latex paint, unlike other varnishes with spar polyurethane as an ingredient.

This goes to show how dedicated the company is to provide us with quality products that won’t be inconvenient to use.

The only issue that I came across is that it tends to crack whenever I suddenly apply too much. I was able to remedy this by ensuring that each layer is skinny to avoid any separation of the varnish.

• It does not have a tint
• It does not affect the original color of the boat
• It can be used over latex paint
• It has a tendency to crack if too much is applied
• Thin application per layer is needed

This one is indeed a tremendous marine varnish to let the right color of your boat shine through. I highly recommend this beautiful marine varnish!

I have to say that this product is a rare breed! There are two common types of marine varnishes, and these are the high gloss and the matte variants. It is uncommon for the market to offer a satin varnish. Satin is a cross between a high luster and a matte finish; it has a shine, but it is also relatively flat. Basically, it is the best of both worlds!

My boat is made of a wood called teak. Honestly, I believe that this product from Interlux is the best marine varnish for teak! I did not have to use any unique tool to make it look splendid. No thinning agent and sandpaper had to be used because this boat varnish already does a great job in penetrating teak and, honestly, other types of wood effectively!

This product has a golden hue. It is the perfect shade for my boat’s wood! I love how it made my boat look expensive and well-kept. It also has a knack for giving a boat its personality!

I was able to see it personally because my boat’s color has already faded. But soon after applying this boat varnish, its color started to come alive! It slowly became brighter and radiant. Suddenly, my faded boat transformed into a beautiful ship with a rich and deep copper hue.

Even though this product can only be applied right above the waterline both for interior and exterior portions of the boat because it is not effective against saltwater, it is still not a bad deal because this varnish is not only useful for boats. It can also be used as an alternative for tables, chairs, and doors!

• Satin finish
• Penetrates teak effectively
• It has a golden hue
• Alternative varnish for tables, chairs, and doors
• Only useful above the waterline
• Not effective against harsh saltwater

Because of the fantastic quality that this product offers, I simply cannot get enough! I’m sure that I will be using it again soon for my other boats.

This marine grade spar varnish proves that a boat undergoes a lot of adverse conditions both while sailing and while being stored. As a varnish, I love how this product is very well-versed when it comes to being durable!

I am so amazed because it does not peel easily, unlike other marine varnishes that I have used in the past. It stays put for a long time, and it does not crack. It is very different from polyurethane-based varnishes because this one from McCloskey/Valspar screams flexibility. It has the power to adhere onto various surfaces, and it sinks deep into the wood quite decently.

It is made with tung oil instead of urethane. It can be seen as old-school because it does not have the synthetic material that modern varnishes contain, but whoever said that old-school is terrible? Actually, tung oil is useful, and it gives off a beautiful finish!

I specifically go crazy about this product because it is thick and pigmented enough to provide a certain degree of coverage. I love that it is useful as a corrector; it completely covers the tiny scratches and stains on my boat’s surface!

But still, this product is not advised to be applied on decks. It is a high gloss varnish, so when it gets wet, there is an excellent chance for the surface to become extra slippery. To avoid accidents on the deck, I decided to apply a matte marine varnish instead.

• Extremely durable
• It does not peel and crack easily.
• Flexible; can be used on different surfaces.
• Made with tung oil
• Thick and pigmented
• Can cover stains and scratches
• It can’t be used on the deck
• Slippery when it gets quite wet

For me, I will still go for this product even though I can’t use it on my deck. It gives some of the best gloss that I have seen, and it is very durable!

What a beautiful product! All I can say is wow! This marine varnish is quite exceptional! This company really is the Old Master of the varnish industry. The sun is known to be a catalyst for the faster aging process of wood and paint, which results in brittle and faded-looking boats.

I am so happy that I have this product, which is perfect for absorbing the sun’s harmful UV rays, so it worked well as my boat’s exterior marine varnish! I love how it can be used above and below the waterline so I could still protect the bottom half of my ship from fading quickly.

Although this product works well as exterior spar varnish, I am in awe because it is also useful as an interior varnish! Because of its satin finish, the deck would not feel slippery even when the area is wet. I love how the safety of all riders is guaranteed because of this varnish!

However, it took me three days to finish the entire application process because the drying time took 5-8 hours per each coat. But even though the process took quite some time, I was not disappointed with the result that I got!

After patiently applying eight coats, I was left with the most marvelously looking boat! It seemed very mysterious; not too shiny, not too matte. Now, my boat has the perfect coating!

• Absorbs the sun’s harmful UV rays
• Perfect as an exterior marine varnish
• It can be used below the waterline.
• Also great for interior portions of the boat
• It prevents boat aging and fading
• Not too shiny, not too matte
• The drying time is 5-8 hours per each coat

Because of this product, I am so glad! I was left with a good-looking and well-protected boat. I could not ask for more!

I am so happy that this product is a water based marine polyurethane varnish. It can be challenging to find a glossy varnish that is water based because most glossy varnishes are oil based. Because of this, I am always on the hunt for a water based product that is a high gloss, and finally, here it is!

I love that this product is exceptionally eco-friendly because it does not contain VOCs or volatile organic compounds, which can be harmful. Varnishes usually release these, and long-term exposure to these chemical compounds can result in long-term health effects.

I am so relieved to finally see a marine varnish that does not negatively affect humans and species that reside in water. I love how this company went the extra mile just to give us a healthier alternative to the usual varnish formula that we get in the market!

Another reason to stan this product is its exceptional clarity! Upon using this, I could immediately say that it produces a very smooth, flexible, and clear varnish. I am so happy because I did not have a hard time applying it on the boat.

I really like how this varnish was able to encourage the improvement of my boat’s woodwork! It did not weirdly interact with the ship, and it actually sank into the wood utterly. This is one of the best features of this product!

Now, let me tell you about its leveling property! This is the smoothest and most even varnish application I have ever experience. I love that it glides on smoothly and allows room for error. You can go over a wet varnish as many times as you want!

• High gloss, even though it is water based.
• Eco-friendly
• It does not produce volatile organic compounds.
• It does not pose harmful health problems.
• Exceptional clarify
• Improves woodwork
• Amazing leveling property
• Allows room for error during application

As a water based varnish, I cannot believe that this is as amazing as it is! If I were you, I would stock up on this product, especially if you have multiple boats!

Indeed, a fantastic product! This marine polyurethane varnish gave my boat an amazingly bright and lively hue. I love how it did not change my boat’s color; it only brightened it up by introducing a nice sheen on top of it!

For this one, I decided to use a bristled paintbrush because it made the application smoother and more even. It went on in a more uniform layer, which makes layering seamless and effortless! Even though it has a thick consistency, it works well with a brush. I love how it did not form any air bubbles!

Because it is quite thick, the drying time is kind of long. I applied it for a total of two days, and on the first day, when the temperature was low in humidity with excellent air circulation, each coat was able to dry for just 5 hours. However, the weather was a little more humid on the second day, and each coat dried for 7 hours.

I love how hard this product is once it is dry! Because of its thick consistency, it was able to cover my boat’s surface better than other marine varnishes. It can resist stains, scratches, and other minor physical damages that roaring waters and sharp rocks can cause. I love how I can be assured that my boat will look its best even when I sail rough waters!

When I started to check how it feels inside the boat, I was taken aback because it did make a huge difference! I thought that the interior had a new coating, but it did not feel slippery at all. I can assure you that this marine grade varnish for wood is very useful in providing a safe surface for passengers!

I am quite disappointed with this because obviously, one of the main reasons why we, boat owners, invest in great marine varnishes is because of its UV protection. Although this product offers a great sheen and exceptional thickness, it, unfortunately, cannot prevent the boat from aging and fading.

• A modified version of polyurethane
• Did not form any air bubbles and streaks
• Thick consistency offers excellent protection.
• Resists stains, scratches, and other minor physical damages
• Not slippery
• It does not have UV protection.
• It can’t protect my boat from aging and fading.

I am very fond of this product. I can see myself using it more in the future, although it will work best as an interior marine varnish!

The marine varnish is for people who are passionate about improving their boats’ appearance. Other than that, it can also be used as a substitute for the typical varnish that is used for daily materials such as doors, windows, chairs, and tables.

Boat Owners

The marine varnish is for boat owners because they take pride in their boats’ beauty and maintenance . Boat owners need to apply marine varnish on their ships because it protects the wood against the rigorous events that take place while sailing.

Marine Artists

Marine artists also need marine varnish because they are responsible for doing the dirty work that most boat owners prefer not to do. They get paid to paint, design, and apply varnish on boats so that the wood is protected and well-maintained.

Varnishing is an essential aspect of carpentry because it strengthens wood. It provides a protective layer between the wood and the outside world, which could pose harmful threats to the wood.

Marine varnish, sometimes referred to as spar varnish, is a term that is quite famous in the boating world. This specific type of varnish is a finish specially designed to protect boats from the harsh conditions they experience during sailing. It is one of the essential materials that a boat owner has in their arsenal of boating essentials.

There are a lot of different options when it comes to purchasing a marine varnish. Here are some of the best features that you might want to consider before buying one:

UV Protection

This is the main reason why marine varnish was specifically made is for it to act as a UV blocker against the sun’s damaging UV rays. As you shop for your next varnish, it is vital to make sure that you are getting one that has the best marine varnish UV protection because it will help to prolong your boat’s life.

Remember that a protected boat will always remain on top of its game. It will not age, fade, and get damaged easily.

High Gloss, Satin, or Matte

There are three different finishes that marine varnish comes in:

It will make your boat appear new and shiny. This variant is best used for the boat’s exterior area because it tends to become too slippery if used inside the ship. Accidents may happen, such as accidental slips, which could result in harmful injuries.

As you can tell, this finish is entirely flat and free of any shine and gloss. This is the best choice for your boat’s interior area because it will provide you and the passengers the perfect surface texture for walking and standing.

This finish is perfect for both exterior and interior portions of your boat. It has a sheen, but it is not too glossy. It is a fusion between a high gloss and a matte, which leads to a perfect finish that is suitable for any boat.

Tinted or Untinted

A tinted marine varnish has the capability of slightly altering the original color of your boat. It will most likely produce a more resonant tone that will complement the color of your boat’s wood. Usually, oil based marine varnishes have tints.

Basically, this form of marine varnish does not have any color to it. If you prefer to maintain your boat’s paint but you want to add some gloss and protection to it, you may opt for this variant. Typically, water based marine varnishes are untinted.

Oil Based Or Water Based

As mentioned above, oil based marine varnishes have a tint to them. It could be amber, golden, or a rich copper tone. As time passes by, rest assured that your boat’s tint will get more prosperous and more profound.

I like this type of marine varnish because it does not try to hide the wood grain of the boat. It actually aims to improve its texture, not cancel it out. It is also essential to take note that oil based marine varnishes are glossier if compared to water based marine varnishes.

Water based

This base has no color at all; it is transparent. It only provides gloss because it does not affect the original color of the boat. However, this has the tendency of flatting out the wood grain of a vessel.

Again, take note that even though water based marine varnishes are still quite glossy, it is still less glossy than oil based marine varnishes.

Marine varnish’s sole purpose is, in simpler terms, to protect the boat from aging. It can block the sun’s UV rays, which can slowly but surely deteriorate the wood’s quality and color.

Most marine varnishes in the market nowadays are effective in protecting the wood against harmful light. This will ensure the boat owner that their boat will maintain its quality for an extended period of time.

Aesthetically Pleasing

The varnish is used to enhance the wood’s appearance. It provides shine and evenness across the entire wood surfaces. It reduces the wood’s porosity by sealing each area; it penetrates the wood without damaging it. It also keeps tiny wood parts in place to avoid woodcut incidents.

Covers Micro Tears, Scratches, and Stains

Marine varnish can also serve as an additional cover over micro-tears, scratches, and stains. Even though your boat has some scratches, rest assured that a few coatings of the best boat varnish will thoroughly cover it up. Also, it is thick enough to resist minor physical damages.

Disadvantages

Slow Drying Time

Some, not all, marine varnishes tend to dry slowly. So instead of getting the job done within a day, you might have to work for 2 to 3 days just to finish all of the needed varnish layers.

Can Contain VOCs

Most marine varnishes nowadays contain Alkyd or Polyurethane synthetic products. Although they provide excellent results for applying and retaining the varnish onto boats, they produce high amounts of VOCs or volatile organic compounds.

VOCs are gases that Alkyd and Polyurethane emit into the air. It is associated with the formation of cancer within the human body. It also has the capacity to interact with other forms of gases, which could result in both short-term and long-term health issues.

Some other health issues that volatile organic compounds pose are the following:

• Irritation of eyes, nose, and throat
• Dizziness and headache
• Memory loss
• Visual impairment
• Sick building syndrome

Clean Before and After Sailing

As a rule of thumb, always clean your boat’s surfaces before and after sailing . Not only will it make sure that your varnish is well-kept and beautiful-looking, but it will also lengthen the life of your boat.

While cleaning, do your best to get rid of all sorts of grime and dirt. Check both the interior and exterior. It is also a smart choice to do a thorough cleaning at least once or every two weeks. Not only will it keep your boat hygienic, but it will also make your boat maintain its best shape.

Apply New Varnish If Needed

Yes, you have fully applied marine varnish on your boat’s surfaces. However, you need to check for the need to reapply every now and then. Keep in mind that it is always better to prevent damage rather than to repair it.

By doing a monthly check-up, your boat’s safety and elegance will always be assured. If you can see certain varnished spots that have thinned down, reapply several marine varnish coats onto that area to avoid the promotion of wood brittleness.

Where can I Buy a Marine Varnish?

There are a lot of different places where you can purchase a marine varnish. Here are some of the most common establishments where you can find the best marine varnish for your boat:

• Hardware stores
• Department stores
• Ship’s stores
• Marine stores

Can a Marine Varnish be used on a Deck?

Yes, you may use a marine varnish to enhance your deck’s beauty and UV protection. But make sure to choose a matte or satin marine varnish so that the deck would be safe to walk on. Avoid using high gloss marine varnishes because they will be too slippery to walk on and may result in unwanted accidents!

Does a Marine Varnish Effectively Waterproof a Wood?

In a way, it does provide a non-porous layer between the wood and the outer area. Think of marine varnish, especially polyurethane marine varnish, as a thin plastic that clings onto the wood. If you put in enough oceanic varnish layers, you will successfully get rid of any porous areas, directly waterproofing the wood.

In a nutshell, every boat owner has to have a little bit of knowledge on marine varnish because it is one of the most effective ways to preserve a boat’s health. With just one session of marine varnish application, their craft will be protected for a long time.

The marine varnish is essential to protect boats from getting older instantly. As much as possible, we have to do our best to take good care of them because, let’s face it; they cost quite a lot! This list of the best marine varnish of 2021 will surely give you some ideas about which varnish to purchase!

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5 Best Yacht Varnishes of 2024

What Is The UK’s Best Yacht Varnishe?

In this guide we’ll look at the best yacht varnishes for the UK market. We’ve compared tin size, coverage per litre, recoat time and cost to give you our top recommendations.

Editors Choice

Johnstone's woodcare outdoor yacht varnish.

Paintmaster Trade Yacht Varnish

Rustins Satin Yacht Varnish

1. Johnstone's Woodcare Outdoor Yacht Varnish

2. paintmaster trade yacht varnish, 3. rustins satin yacht varnish, 4. epifanes clear high gloss yacht varnish, 5. ronseal satin exterior yacht varnish, yacht varnishe reviews.

British paint giants Johnstone’s have a history dating back to 1890 and make some of the most trusted and best exterior wood varnish products available right now. We’re familiar with their amazing range of colours and finishes, so it made sense to test out their Woodcare Outdoor Yacht Varnish .

It’s another yacht varnish with excellent coverage per litre, even though it goes on quite thick. If you key each coat with wire wool or an exceptionally fine grit sandpaper once it’s dry, you’ll get as good a finish as possible. We got on well with this varnish, it cures to a smart finish that is hard and clear.

Paintmaster offer great savings to trade customers and savvy DIYers by cutting out the middleman when it comes to buying the best yacht varnish , available in tins up to a whopping 205 litres. You might not need that much to treat the woodwork around your home, even if the coverage isn’t quite as impressive as some of the others on the list.

This no-nonsense yacht varnish has a super-quick touch dry time of just an hour, and the solvent based formulation promises to expand and contract with the wood underneath it, to minimise cracking and bubbling. It goes on well with a brush and looks great once cured.

Originally based in London’s Shoreditch area in the heart of the furniture making industry, Rustins know a thing or two about making the best exterior varnish for wood. We knew we had to try out their yacht varnish , so we got hold of a tin and put it through its paces.

It’s developed to give a durable finish to exterior timbers, with added tung oil that dries to a high shine. We love the almost wet look you get from this product, it’s the best satin yacht varnish we’ve used so far.

With a strong tradition of boat building and high expectations from their protective coatings, you can count on Dutch specialist paint manufacturer Epifanes to create the best yacht varnish. And they’ve been doing so since 1902.

We really like their High Gloss Clear Varnish , it’s not the cheapest option but you certainly get what you pay for. Designed for use on boats, it uses a blend of tung oil and resins to build up an ultra-tough and glossy surface that will protect your wood surfaces for years, whatever the weather. It’s easily the best clear yacht varnish on this list.

British protective coatings brand Ronseal have made a name for themselves by producing products that do exactly what they say on the tin. This solvent-based weatherproofing varnish is the perfect solution for exterior timbers like windowsills that need the best outdoor varnish on them.

Ronseal’s Yacht Varnish promises the best coverage on the list, so when we tested it out, we were happy to agree that a little goes a long way. Once several coats had been applied to prepared timber, it cured to a handsome satin finish that looked great.

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Wood Sealer Varnish Primer

Marine Wood Finish

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What is it you're looking for?

Yacht varnish

Yacht Varnish protects outdoor wood all year long so it’s perfect for windows and doors. It’s a tough traditional varnish and resists cracking, peeling and blistering.

• Long lasting protection for outdoor wood
• Waterproof and protects from the sun
• Extremely tough – resists cracking, peeling and blistering
• Highlights wood’s natural colour
• Prevents wood from greying over time
• Protects against sun damage
• Won't crack, peel or blister

How much paint do I need?

Measure your area precisely, drop the numbers into this smart calculator and it will tell you straight away how many litres you'll need to complete your project.

Need to know

This no-nonsense varnish is extremely tough and durable, giving you a long-lasting glossy finish.

Eight hours might seem like a long time to wait between coats, but it guarantees you lasting protection and the best finish.

3 coats give you a glossy finish

Varnishes up to 16m2 per litre

Brush it on

Smooth exterior wood like doors and windows

How to use Yacht Varnish

Before you start.

Make sure your wood is dry before you begin. Choose a day that’s reasonably warm (above 10°c) and dry.

This varnish isn’t suitable for decking though.

How to prepare wood for varnishing

• You will need to remove old stain or varnish by sanding it down. Use 120 grit sandpaper and sand away the old finish.
• Wipe down the surface with white spirit and a cloth to remove the leftover dust.

If your wood is brand new, you will need to sand it to remove loose wood and clean with white spirit.

Application

• Thoroughly stir your varnish to make sure it’s smooth and there’s no lumpy bits.
• Test it on a small patch of your door. It’s clear varnish but it may still darken the natural colour of your wood so make sure you’re happy with it.
• If you are, start painting with a brush. Go in the direction of the grain and for best results, apply two or three coats. Wait eight hours between each coat.
• Before you apply your last coat, lightly sand the surface and use white spirit to remove the excess dust. This will give you a nice smooth finish. Your last coat will be dry in four hours.

Once your varnish is dry, you’ll be able to clean your door as normal. Keep on top of the dirt and grime for a friendly welcome to your home.

You can clean your brushes with white spirit or brush cleaner.

It’s easy to repair your varnish if sections of it become damaged. Simply use some sandpaper to sand down and smooth out the damaged part and then add a couple of coats so it’s good as new again.

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Decorate and Repair Your Ride With the Best Boat Paints

No matter what type of boat you own, painting it and adding a bit of personal flair is always fun. When it comes to painting your boat, the possibilities are endless. Whether you choose to add a colorful stripe to the side or repaint the entire boat’s body, using high-quality, durable, and long-lasting paint is essential.

Boat paint is one of the most impactful ways to personalize or change your boat. You can either paint over existing colors or change up the pattern and style entirely. Regardless of how you choose to paint your boat, you first need to decide on the right boat paint for your DIY project. That’s where we come in! Check out our guide to the leading boat paints of 2024 so you can achieve that perfect look while out on the water.

Our Top Picks

• Best Overall: TotalBoat Boat Paint Shop Now ➔
• Easy To Use: Duralux Boat Paint Shop Now ➔
• Quick Drying: Rust-Oleum Boat Paint Shop Now ➔
• 1 What Is Boat Paint?
• 2 What Are the Types of Boat Paint?
• 3 Topside boat paint
• 4 Bottom paint
• 5 Wood boat paint
• 6 Tips When Using Boat Paint
• 7 Use the right type of paint
• 8 Follow the instructions carefully
• 9 Give ample time for the paint to dry
• 10 Choose the right colors

Can boat paint be used on all parts of the boat?

When should i paint my boat, does boat paint last forever, related reviews, what is the quality boat paint in 2024, best overall.

TotalBoat Boat Paint

Boats are almost always left exposed to the elements, which is why you’ll want a boat paint that will last you for years to come. The TotalBoat Boat Paint is a solid choice for any boat lover and has more than 20 colors to choose from, including aqua mist, sea foam, and fire red. The paint leaves behind a gloss that’s bright and is sure to stand out among other boats at the dock. This boat paint is incredibly easy and simple to apply. You don’t need to be an expert to give your boat a good coating with this seamless paint. Thanks to this boat paint’s bold profile and numerous color options, we’ve chosen it as our best overall pick, particularly for those who want to try painting their boat for the first time.

• Glossy and durable finish
• Up to 20 colors to choose from
• Self-leveling formula
• Not all colors are always available

Easy To Use

Duralux Boat Paint

For many, painting a boat can be a risky endeavor. Owning a boat isn’t very cheap, and making a mistake during the paint job can lead to stains and errors that are difficult to fix. So, unless you can afford professional help, you may not want to take the plunge. Fortunately, painting a boat isn’t rocket science and with the help of the Duralux Boat Paint, it can be a fun and easy task. The paint only needs two thin coats with either a brush, roller, or airless sprayer. As long as you don’t paint your boat under the sun, you’ll get consistent and reliable results with this paint. The range of colors is a little bit limiting, but if you can get past that this boat paint is a strong first choice for novice boat owners.

• Very easy to apply
• Can be applied with various tools
• Long-lasting finish
• No warm color options available

Quick Drying

Rust-Oleum Boat Paint

Are you pressed for time or just itching to head into the water as soon as possible? The Rust-Oleum Boat Paint offers a quick and easy solution to all your problems. This paint dries in as little as one or two hours, which means you can start boating on the very same day you apply the paint. With a formula that retains its gloss over time, your boat will look as good as new for months or years to come depending on how you maintain it. While this boat paint only offers eight color options, it has a nice range of colors and most boaters are sure to find exactly what they’re looking for. If you’re okay with neutral color tones, such as sand beige or battleship gray, this fast-drying boat paint is a great investment.

• Dries very quickly
• Retains its gloss
• Great for use on fiberglass
• Not many color options

Boat Paint Buying Guide

If you’re looking to paint your boat, you’ve come to the right place. This guide will go over the basics regarding boat paint.

What Is Boat Paint?

Boat paint refers to paint that’s applied to various parts of the boat. Depending on the type of paint, it may be applied on the top or bottom side of the boat. Keep in mind that certain types of paint may be more useful in certain situations than others. Boat paint usually leaves behind a glossy finish that gives your vehicle a nice tone that really pops when out on the water.

Because boat paint is made to last, you can expect a coating to stay in good condition for months or even years to come. How long your boat paint lasts will vary depending on how often you use your boat, where you’re boating, and how you store your boat when not in the water.

What Are the Types of Boat Paint?

Topside boat paint.

Topside paint is paint that’s applied on the top half of the boat, or the part of the boat that isn’t submerged in the water. While this type of paint can get wet, it’s used mostly for decorative purposes rather than protective purposes. You can get topside paint in a variety of colors and they can dry as quickly as one hour after application depending on the formula.

While topside paint may not be as protective as bottom boat paint, it’s still great for keeping your boat protected from harsh UV rays. Even your boat can feel the effects of the sun after weeks or months of exposure and a good coating of topside paint can prevent any UV damage from occurring on your boat’s hull.

Bottom paint

Bottom paint is a type of paint that’s applied to the bottom half of the boat, or the part of the boat that’s submerged underwater. This type of paint isn’t always visible as it’s under the water, but depending on how clear the water is you may be able to get a glimpse of it. Where bottom paint truly shines is in its ability to protect the boat from organisms in the water.

There are many critters in seas and lakes that can cause damage to your boat over time. Weeds and barnacles are some of the most common culprits. Bottom paint minimizes the chances of these critters from getting on your boat, ensuring it stays in good condition for much longer.

Wood boat paint

Wood boat paint is a type of paint that’s applied to wooden parts of the boat. These paints are not as long-lasting as other paints but are great if you want to preserve the wood finish on your boat.

Tips When Using Boat Paint

Use the right type of paint.

There are many types of boat paints that are used for certain applications. Before you think about the color or finish of the paint, first consider where you’re applying the paint. Are you trying to protect the bottom of your boat? Will you be adding color to the topside? Ask yourself these questions before buying so you can be sure to choose the correct type of paint, then you can choose the color.

Follow the instructions carefully

Paint is pretty easy to use and apply, but not all paints are the same. Depending on the formula of the paint, you may need to apply it a certain way or use specific tools for the best results. Even if you have experience painting walls, floors, or other surfaces, boats are a different thing entirely. You should always follow the instructions on the product packaging.

Give ample time for the paint to dry

Some paint formulas take overnight to dry, while others take only one or two hours. While you may be tempted to take the boat out for a ride as soon as the recommended drying time is over, it never hurts to wait one or two more hours just to be on the safe side. Unless you can comb over every inch of where you painted, it’s always a good idea to give the paint just a little extra time to dry. After all, the paint will be there for months or even years to come, so an extra hour won’t hurt.

Choose the right colors

Choosing the right colors for your boat paint can be a tricky task depending on how you want the paint to look. If you’re looking to simply paint over some scratches, it’s not too difficult to find the right color, but if you want to redecorate the hull that’s a different story. Think about what colors you like and how you want your boat to look. You may also want to consider the location itself, or where you plan on using the boat. These considerations may be trivial, but they’re worth thinking about if you want your boat to look nice in the end.

People Also Asked

No. There are certain types of boat paint used for specific parts of the boat, such as the topside or bottom.

If you feel like your boat could use a new paint job or if your boat has scratches from damage done by docking, it may be time to repaint your boat.

While boat paint formulas are made to last for as long as possible, these paints do not last forever and you will eventually have to apply another coat in the future.

Article Contributors

Sail magazine review team.

SAIL Magazine Review Team reports on best-selling products in sailing and boating. The SAIL Magazine editorial staff is not involved in the creation of this content. SAIL Magazine is reader-supported: When you buy through links on our site, we may earn an affiliate commission. The SAIL Review Team is composed of authors, editors, and sailors. Artificial Intelligence (large language models) may have been used in the research and creation of the content.

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