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What is the best way to Tarp a sailboat for winter

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Hello, First time sailor here, looking for advice w/pictures of how to properly Tarp my 30ft sailboat for the winter..... Im assuming throwing one over the boom and another somehow over the bow. Ive heard of others taking one long tarp and cutting it, sliding it stern to bow... That didn't seem like a good idea because of the weight of snow... Im open to any ideas!! Cheers, J

Im in Upstate NY, and thank you for the pictures!! That is exactly what i was thinking. But would the snow on the deck of the boat be an issue?? if i use two tarps one on the bow, one on the stern... there is a space near the mast.. is that an issue?

Where the two tarps came together at the mast, I used short lengths of twine to tie the gromets together. There is a little space around the mast, I guess, but I had it pretty tight. There are openings at both the back and front, a good thing in my view to let air flow through. The only idea is to keep snow/rain/ice/leaves from dropping directly down onto the boat and building up around the hardware, etc. Snow/rain slid right off my tarps all winter. Let's not forget these are boats, not some antique furniture, a little weather will not hurt them. Also, I am in Vermont (this is in the Islands, actually, between VT and NY). Probably similar to your winters.

Thank you for the advice!! Time to Winterize, Tarp and wait........Spring can't come soon enough!

It makes me cringe when someone near me on dry dock does their own tarp. 9 times out of 10 there will be more damage to their own boats and adjacent boats then it is worth, if you don't know what you are doing. Most of those tarps, the grommets are useless and will rip out, and the string I have seen used. Any movement of the tarp can cause wear and tear.

9 out of 10? Is that a scientific study? What kind of specialized knowledge do you need to tarp your boat? Is there a degree, trade school, certification? Mine looked the same in spring as it did in fall, and I'm certainly no boat-tarp expert.

Tom, I'm confused. Did you tarp over shrinkwrap?

Do you guys take out your batteries?

I just read this article by Maine Sail: Effect of Winter on Battery Self Discharge Photo Gallery by Compass Marine at pbase.com The gist seems to be that if a battery is 100% charged, just unhook it and leave it.

I covered my Mirage 24 for the first time last year (about to do it again). Having looked online I used a variation of the mast down system. I made 3 braces to support the mast above the deck (level and high enough for airflow) Then I bought a bunch of inexpensive PVC electrical conduit - zip tied it to the toe rail on one side bowed it over the mast and zip tied to the opposite toe rail (drilled holes through the conduit). Then I loosely tied a good quality tarp over the boat, followed by a large section of fish net. The netting was pulled tight, kept the tarp in place and didnt wear. Protected the tarp with carpet sections where it would chafe. Worked great. I'm in Nova Scotia and it shed snow well, withstood some serious windstorms. Boat was great in the spring. I used an inexpensive plastic shipping wrap to hold thing together - keep carpet in place, secure shrouds etc. Sorry - no handy pics. Mark

I see that the vast majority of people don't take their lifelines down. In the pictures anyways. The marina i used to store at everyone took their lifelines down. I always do. I moved my boat down the canal this year away from the snowbelt (250" yr). I know you would never shrink wrap a boat with lifelines up. I've seen what happens; can snap them right off. With the mast down on tall crutches what do you guys think about going over the lifelines with a tarp?? I always tarp so far. I finally bought a thick vinyl tarp 20 x 46 and custom cut and glued it myself. I got tired of buying a new HD poly tarp every year. The wind was ripping them apart. They were tied well by the way. I watched shrink wrap blown off as well. My old storage yard was wide open to the northwest winds. 60 miles of fetch.

By the way; if i tied my boat in my previous marina as loose as some of the tarps i see in these pictures it would be gone in a week. You guys most have some protected storage areas.

I've tarped mast up and mast down. It's a hell of a lot easier down. When the mast was up I used two tarps with sawhorses out of 2x4's as necessary. Build the frame high to shed the snow. Don't trust the grommets. Wrap the tarp around. Golf ball and wrap a slip knot around that.

With our previous boat (Grampian 34 centre cockpit) we tarped every year. We get real winters up here on the north shore of Lake Superior, so our tarp had to keep the snow out while standing up to severe winter storms. After a few versions I settled on making a frame of flexible plastic conduit (1" perhaps 1 1/2"). I tied the arches to a 3/8" line that I used as a ridge pole/backbone. The conduit was secured to the toe rail and tie-wrapped to the spine. The tarp was then draped over and secured down to the cradle. The benefit of this system is that it flexes with the wind. Using this we never ripped the tarp, and always kept the snows out. It's also easy to set up and store.

Take a walk through the yard. You are bound to see plenty of them.

I store mast up. My system consists of using the boom and whisker pole as the centerline supports and them have hoops using 1 inch PVC conduit (like Mike above) that attach to the boom or whisker pole and the toerail. Without the hoops, snow and water will collect. I use two tarps, a bit oversized and slit at necessary points to get around shrouds etc. and reinforced with Gorilla tape. I strongly recommend buying a heavy duty tarp (silver) not the light blue or green ones. MUCH more durable, don't flap nearly as much due to the additional weight, and twice as many grommets that don't pull out. I'm on my fourth season with mine. Buy them online and they are about the same as the cheap blue ones at the local hardware store. Heavy-Duty Silver Poly Tarps at Tarp & Cover Superstore

Thanks for the link. They are $20 cheaper than Tarps Plus (for 20'x30') where I went last time so I'm giving them a try I used the same silver tarp and I was happy with it although I only got two years from it. That's because I had a wooden frame and it chafed pretty badly on the wood. This year I'll wrap the wood in pieces of the old tarp for protection.

Where I live, boats stay in the water. I've only seen two or three boats that have actually been hauled and shrink wrapped. When my boat was on its trailer, I used tarps to cover most of the deck. I'm looking at making a boat cover someday out of sunbrella hoping that it would last longer than the tarps.

Don0190 said: I never have had the plastic type tarps make it though the winter they always tear apart. The yard this year has banned them from boats due to the damage they do to the boats once they start flapping all over. So I thinking in spending some cash this year for a good canvas tarp. But just to keep the snow out of the cockpit so I can get onto the boat in early spring. My boat doesn't leak Click to expand...

Old Indian trick Believe it or not, buffalo hides for tipis did NOT come with grommets. So here is a genuine "old Indian trick". Place a smooth roundish object, a small marble or smooth pebble, behind the fabric and push it towards you and tie around it so it's in a tight pocket. You should see the shape of the pebble/marble on your side with the tie rope on your side and behind the pebble. This is much stronger than a grommet, and you can do it wherever you need a tie, but where possible do it on the hem or a seam for strength. Be aware that it's heavier than a grommet, it's up to you to make sure it won't flap and flail around. Mine don't sit against the boat. As Maine Sail says, steep pitch is everything. I also like the ridge high so I can get in there comfortably. And I like some opening at the ends for ventilation. I have one tarp that's been on continuously for three years (stored), it just split a few days ago at the ridge. It's still dry and pleasant in the boat.

This isn't quite the right thread for this but what are thoughts about leaving batteries in over winter? Now that I have a proper solar panel and controller I was considering leaving the batteries on-board over the winter with the panel (on the stern rail) exposed. I'm guessing that with the silver tarp enough light won't get through for the solar right? I've heard that shrink wrap lets in enough light normally to keep batteries topped off. This saves me lugging them in and out and gives me lights and power over winter.

No need to remove the batts. as long as you have a full charge on them and disconnect them. Batts will lose like 2% a month. I would not keep the solar hooked up unless you are going to check water levels. Assuming you have non sealed wet batts.

?
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What’s the Best Cover for Your Boat?

By Rick Shackleton
November 6, 2023

As winter approaches, most boats go undercover. Some spend the downtime in garages, sheds and barns. Others head to warmer climes and stay in service. But the bulk of boats going into winter storage (or long-term storage for any reason) get covered in one of three ways: a tarp, shrink-wrap or a fitted boat cover. Which cover solution is best for you? Consider these pros and cons.

The cheapest way to cover a boat is with a polyethylene tarp . The common blue tarp is the least expensive and the least durable. More durable brown or silver tarps cost more. A silver tarp’s reflectivity keeps temps lower in hot climates.

Tarps are rectangular, so they rarely fit a boat well. Many knots, bungee cords and duct tape are used to keep out the weather. This also means getting into the boat to perform preseason tasks is difficult. Usually, some sort of internal frame or support must be devised to keep the tarp shaped so that rain and snow run off. Poly tarps degrade in sunlight; expect no more than three years of use, even in northern climes. Tarps are not good for moving boats long distances over the road.

Shrink-Wrap

DIY boaters can shrink-wrap , but most have a boatyard do it for them. Shrink-wrap costs more than a tarp but will stand up to the most severe weather. Various colors and grades of durability are available.

Shrink-wrap fits snugly, and inexpensive strapping usually provides the support needed to span open spaces, such as a cockpit or between the windshield and bow. Rain and snow run right off and won’t puddle on or collapse a shrink-wrapped boat. Doors and vents can be added to shrink-wrap, and it will stand up to long distances at highway speed. A downside is that it is single-use. I know some boaters who have carefully removed shrink-wrap and reused it for a few winters as a fitted cover; generally, this not possible or advisable.

Read Next: Three Things to Know Before Buying A Boat Cover

Fitted Cover

Companies such as Classic Accessories ( classicaccessories.com ), National Boat Covers ( nationalboatcovers.com ) and Taylor Made ( taylormadeproducts.com ) offer what I call fitted covers. These are more expensive upfront than shrink-wrap but can last for eight to 10 years, maybe more. Most are made to fit a boat type, such as a center-console or cuddy cabin with a hardtop or a cabin cruiser. However, some popular boat models have covers that fit like a custom cover. Also, fitted covers are offered in various material grades. Ask about these things when shopping, especially if you live in a snowy climate or plan on using the cover for long distances at highway speeds.

A fitted cover might require some support in the boat—telescopic poles are common—to keep it peaked so precipitation runs off. It’s relatively easy to get under a boat cover for DIY work without ruining the cover’s integrity. You may need to recoat a fitted cover with a waterproofing or UV-resistant treatment during your ownership. A fitted cover is a valued boating accessory, unlike a tarp or shrink-wrap.

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By Dave Gray - Indianapolis, Indiana - USA

Novice sailboat builders often find themselves in a quandary once their plans actually go 3-D. A quality sail for their new craft invariably costs much more than expected and often exceeds their investment in their newly completed hulls. Invariably, these newbie builders begin seeking advice and alternatives on the Internet, and chances are high that they will eventually encounter other builders or web sites where they will learn about polytarp sails, a polyethylene sail made from a lowly, but inexpensive, tarp.

Ray Hodsdons beautiful little shellback dinghy underway powered by a PolySail. Ray, who formerly sailed 18’ Hobie Cats, provided a very positive testimonial on his polysail's performance.

(click images to enlarge)

A few years back, the tarp-equipped sailboat would have been easy to spot. The homemade blue or green sail flopping in the wind was a dead giveaway. The irrepressible Captain Freddie, who sailed his fiberglass cruiser equipped with blue tarp sails from Massachusetts to Florida is something of a cult hero to the tarp sail crowd. A follow up article in Soundings a few years ago found Freddie in Rhode Island writing a book about his adventures. (There is a photo located HERE . Over the past few years, however, a heavier white polytarp material has made spotting tarp sails much more difficult.

Popularized by PolySail International , a garage-based, part-time business offering white polytarp sails in inexpensive kit form, PolySails now appear on smaller home built boats around the world. Over 500 of these kits have been sold over the last ten years. Kits have been mailed to all 50 US states, and numerous foreign countries, including Australia, Canada, England, France, Greece, Italy, Ireland, New Zealand, the Philippines, and Thailand. A few of the white polytarp powered sailboats have even appeared in the builder’s photo section of Wooden Boat magazine.

Spiros Mamais of Athens, Greece built a lug sail for his homebuilt craft from a PolySail Kit.

What are PolySails? These are sails constructed from three ply white polytarp material imported from factories located in China, India, Pakistan, and South Korea, and other Pacific Rim countries. The tarp’s center layer is created of polyethylene strips in a 12 x 12 or 14 x 14 weave per square inch. This center layer is bonded on both sides by flat sheets of the same material, creating a plastic-like material about 12 mils in thickness and weighing between 5 and 6 ounces per sq. yard (not a sailmaker’s yard). Occasionally, the material can be found in “canopy grade” weighing about 8 ounces per square yard. Compared to the common blue tarps which weigh about 3 ounces per square yard, usually have a 6 x 10 weave, and lack the ultraviolet protection of the white tarps, the white polytarps have less stretch and are considerably more durable. Up close, the plastic-like surface, the lack of sailmaker’s seams, and the characteristic wrinkles in the material distinguish the PolySail material from more traditional sail materials. To prove the material’s strength, I have suspended a 10’ x 12’ tarp in the air and stood in the middle of it. I weigh about 190 pounds.

Because PolySails are made from a single sheet of material, they usually depend on edge rounding and a dart or two to define their shape. Shape is also aided by the manufacturing process which uses heat and pressure to “weld” doubled edges and lapped seams into the material. This process shrinks the edges and seams and allows some stretch in the tarp’s interior. To make a PolySail, a builder uses double-faced tape to create the sail outline. After removing the tape backing, a reinforcing line is run around the interior of the tape. Afterwards, the exposed tape edges are lapped back over the line, creating the sail type of the builder’s choice. A taped and grommeted sail made to my directions , usually takes about 4 hours to complete and will last about a season before the tapes used in construction begin to lose adhesion and a stitch must be run around the perimeter of the sail to preserve it.

This photo shows the finished tack in a Weekender gaff sail. Note the dart, the use of the
“welded” tarp seam material, and the application of the vinyl tape to reinforce the corner.

Nearly every type of sail has been made from white polytarp over the past few years, primarily for smaller boats up to 16 feet in length. Favorites seem to be the 60 square foot leg o’ mutton sail used by designer Phil Bolger on a number of his small boats and the Weekender gaff and jib for a small cruiser designed by Stevenson Projects. We have surveyed our customers over the years, and about half these amateur sailbuilders report performance equal to other synthetic sails, such as Dacron, constructed in traditional sailmaking fashion by professional sailmakers. However, as one customer pointed out, there were other factors besides performance that were involved when comparing an inexpensive PolySail to a commercially made sail that cost nine times as much.

Typically, PolySails are used in protected waters in light winds, although there is one report of a PolySail surviving a tornado with minimal damage. Three years of surveys with response rates approaching 40% have shown customers to be overwhelmingly positive about their kits and finished sails.

Me sailing my 16’ sharpie "Essence" down a channel near my home. "Essence" sports a jib-headed, sprit-boomed PolySail.

In ten years only one customer has ever reported a material failure in a PolySail. However, when we offered a replacement kit, the customer blamed himself for the failure rather than the material. More survey details and PolySail research are available HERE .

Given the positive results for the customer-constructed kits, Gray has recently started producing ready-made sails for some popular boats and custom sails for others. He anticipates continued growth for his PolySails and kits as the sails appear on boats across the country and as the media begins to report on their quality and performance. While he doesn’t anticipate immediate acceptance by some of the more tradition-bound sailing clubs and media, he predicts that price and performance will continue to drive growth with the less well-to-do sailors and with home builders. Kits and sails are currently available from PolySail International, complete with shipping, in a range from about $60 to $200.

Chuck and Sandra Leinweber, owners of the online Duckworks Magazine and the Duckworks Store, put their Jim Michalak-designed Caprice through its paces. With a LOA of 22’ and an estimated weight of 3000 pounds, this boat is one of the larger home-built boats known to have carried a PolySail

More articles about Polysails:

Survey of Polysail Customers - 2004
Making a Polytarp Sail
High Aspect Marconi Polysail
A Polytarp Junk Rig
Shaping White Polytarp Sails
A Polytarp sail for Lil'jon
PDRacer Sails Down Under
Decision Time
Sail Dart Calculator

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Color	Light Duty
Brand	HOMESTEAD
Item Thickness	6 Mils
Water Resistance Level	Waterproof
Number of Items	1
Product Dimensions	360"L x 240"W
Size	20' x 30'
Ultraviolet Light Protection	True
UPC	883652912606
Manufacturer	Olympia Tools

About this item

Superior Quality Material: Made with a 75 GSM polyethylene weave and 6 mil thickness for long-lasting use.
Ultimate Weather Protection: Double-laminated coating and heat-sealed seams provide robust defense against rain, snow, and harsh weather.
Exceptional Versatility: Ideal for covering cars, boats, motorcycles, outdoor furniture, and available in sizes 6x8, 8x10, 10x10, 10x12, 12x16, and 20x30 feet.
Enhanced Reinforcement: Reinforced hem with PP rope and plastic corners, along with rustproof aluminum grommets every 3 feet, ensure stability and tear resistance.
Extra Features for Durability: Our tarps are shrink-proof and UV-treated, offering added resistance to the elements and prolonging the lifespan of the product.

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Product Description

AVAILABLE IN MULTIPLE SIZE AND COLOR


Perfect for short-term uses like temporary shelters or coverings	Ideal for more frequent usage such as vehicle covers or outdoor projects.	For the toughest conditions, like long-term construction use.
6 mil (75 GSM)	10 mil (160 GSM)	18 mil (300 GSM)
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How do I choose between light, medium, and super heavy-duty tarps based on material and usage?

Choose based on use: Light duty for temporary coverings, medium duty for regular outdoor use, and super heavy-duty for long-term, intense exposure.

Are all your tarps effectively waterproof and suitable for harsh weather conditions?

Yes, each tarp, irrespective of its duty level, is designed with a double-laminated coating and heat-sealed seams, ensuring they are waterproof and suitable for various weather conditions, including heavy rain and snow.

What's special about the grommets on your tarps?

Grommets are placed every 3 feet for flexible, secure tie-downs, and are rustproof for durability.

Why is UV resistance important in tarps?

UV resistance prevents degradation and color fading, especially in long-term outdoor use, extending the tarp's lifespan.

How do I determine the right size tarp for my needs?

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Color	Light Duty
Brand	HOMESTEAD
Item Thickness	6 Mils
Water Resistance Level	Waterproof
Number of Items	1
Product Dimensions	360"L x 240"W
Size	20' x 30'
Ultraviolet Light Protection	True
UPC	883652912606
Manufacturer	Olympia Tools
Item Weight	9.57 pounds
ASIN	B0CP283YKT
Country of Origin	Vietnam
Item model number	91-260
Customer Reviews	4.5 out of 5 stars
Best Sellers Rank	#120,438 in Tools & Home Improvement ( ) #282 in
Date First Available	November 27, 2023

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These heavy-duty outdoor tarps are resistant to high levels of wear and tear and can endure all weather systems, but are uniquely suited for situations that require a bit more waterproofing. Our heavy duty tarps are constructed from thick polyethylene fabric and contain a 12 x 14 mesh count, allowing for the right blend of coverage and breathability.

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Fits over all accessories, fits easily over air conditioners, AC, satellites, horns, etc.
Easy to install tarp
18" tie down / grommet spacing around tarp edge
1200 Denier
Super tear resistant
UV resistant
Acid resistant
Reinforced corners guards
Rope reinforced tarp edges
1 year warranty

HD Poly Tarp Sizes Available:

20' Long x 16' Wide tarp (Finished Size: 19'6" x 15'6")
24' Long x 16' Wide tarp (Finished Size: 23'6" x 15'6")
30' Long x 16' Wide tarp (Finished Size: 29'6" x 15'6")
40' Long x 20' Wide tarp (Extra Wide) (Finished Size: 39'6" x 19'6")
50' Long x 20' Wide tarp (Extra Wide) (Finished Size: 49'6" x 19'6")
Arctic White

PLEASE NOTE: The item you selected is considered a custom product. As such, it is not eligible for a refund once the order has been placed.

If you understand and agree to this condition, and would like to continue with your purchase, click the “Agree” button below.

For assistance, please call 800.616.0599

Randy H. ★ ★ ★ ★ ★ Verified Customer

Very quick and easy, great boat cover

Dave D. ★ ★ ★ ★ ★ Verified Customer

second time I first one is holding up great ordered 2 different boats- strong material

James B. ★ ★ ★ ★ ★ Verified Customer

Super smooth, and love the fit for my ranger boat

Timothy M. ★ ★ ★ ★ ★ Verified Customer

Help was all good- nice product

Dan C. ★ ★ ★ ★ ★ Verified Customer

Christopher in customer service was helpful with looking up previous order to get the dimensions need for the exact fix of this new boat cover.

Robert F. ★ ★ ★ ★ ★ Verified Customer

Called to get 10% military discount, guy on phone, thank you! Fabric good

David M. ★ ★ ★ ★ ★ Verified Customer

I don’t know if it covers the motors.

Brent N. ★ ★ ★ ★ Verified Customer

Very smooth procedure . Seems like a great product for the price. Love the Winstorm

Jeff G. ★ ★ ★ ★ ★ Verified Customer

Called customer service for help – and they did

Leon L. ★ ★ ★ ★ ★ Verified Customer

It does not get easier than this!

Julianne S. ★ ★ ★ ★ ★ Verified Customer

Easy to use web site with the correct information, got the cover thank you fits great

Karen B. ★ ★ ★ ★ ★ Verified Customer

Glad you had my older model JC pontoon boat as a choice. No other online sites had it!

Mike J. ★ ★ ★ ★ ★ Verified Customer

I bought from here before very easy also good product

Dale E. ★ ★ ★ ★ ★ Verified Customer

Quick and easy

RAYMOND J. ★ ★ ★ ★ ★ Verified Customer

Description of my boat hard to distinguish on site. Otherwise, great experience.

Michael R. ★ ★ ★ ★ ★ Verified Customer

North American made and a good warranty, that is what we're looking for.

Phyllis L. ★ ★ ★ ★ ★ Verified Customer

Very easy, glad we went with National

Sonny S. ★ ★ ★ ★ ★ Verified Customer

Ordering processs was super easy and had my exact boat in the files. Outstanding price as well.

Steve S. ★ ★ ★ ★ ★ Verified Customer

this works! Great fit

Lael S. ★ ★ ★ ★ ★ Verified Customer

Easy selection process, great options- nice materials

Michael L. ★ ★ ★ ★ ★ Verified Customer

Could not find code for checkout, then I called customer service

Bret B. ★ ★ ★ ★ ★ Verified Customer

The shopping experience was quick and easy. Great rating for the delivery and quality of material and workmanship upon receiving.

Walter P. ★ ★ ★ ★ ★ Verified Customer

we are a camper boat repair facility- we use national covers

Michael B. ★ ★ ★ ★ ★ Verified Customer

having the boat listings down to the model number was extremely helpful. We got the perfect fit.

Aaron B. ★ ★ ★ ★ ★ Verified Customer

Dennis J. ★ ★ ★ ★ ★ Verified Customer

Easy to manage Website- fast delivery for custom work and color I wanted

Gary C. ★ ★ ★ ★ ★ Verified Customer

Great Web Site and products – got the word from a friend

JOHN S. ★ ★ ★ ★ ★ Verified Customer

very easy, I picked the wrong fit and they helped at no charge

Zack T. ★ ★ ★ ★ ★ Verified Customer

placed my order. I'll check back when I know its correct and delivered on time

B.D. M. ★ ★ ★ ★ ★ Verified Customer

I worked via email with them to ensure I was getting the correct size cover for my Creekboat. They asked for some very specific measurements which I provided. They then recommended the type and size of cover whih I ordered. It fits like a glove, and looks very professional.

David C. ★ ★ ★ ★ ★ Verified Customer

Very easy ordering