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Waterproofing for canvas cover?

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Craig Schmidt
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Waterproofing for canvas cover?

Post by Craig Schmidt » Fri Oct 06, 2017 10:04 pm

The custom made canvas cover for my runabout is no longer waterproof, but is otherwise clean and serviceable. Can anyone with experience recommend a brand of waterproofer that will restore the cover without risk of damage to a freshly varnished boat? I'm afraid that waterproofing liquids that use petroleum or mineral spirits for a vehicle would mar or fog the varnish.

jim g
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Re: Waterproofing for canvas cover?

Post by jim g » Fri Oct 06, 2017 10:37 pm

Sunbrella make a waterproofing to reseal there canvas.

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Doug P
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Re: Waterproofing for canvas cover?

Post by Doug P » Sat Oct 07, 2017 7:24 pm

I have used Thompson's Water Seal, ( Deck Sealer) It is a paraffin wax

homeiste
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Re: Waterproofing for canvas cover?

Post by homeiste » Sun Oct 08, 2017 7:27 am

I've used a product called 303 Fabric Protectant with excellent results. It is recommended by Sunbrella for their fabric, and by the Boston Whaler crowd. I used it on standard canvas. It is either aqueous or alcohol based, and I applied it to the cover off the boat, but once dry it shouldn't be an issue for your varnish.
1960 18' Continental
1970 Boston Whaler Sakonnet w/ Bearcat 55 outboard

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tkhersom
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Re: Waterproofing for canvas cover?

Post by tkhersom » Mon Oct 09, 2017 9:15 am

I have used Camp Dry by Kiwi.
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Craig Schmidt
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Re: Waterproofing for canvas cover?

Post by Craig Schmidt » Tue Oct 10, 2017 12:27 pm

Thank you all for your recommendations. I'll check the web for information on each of these products to see what would be best for cotton canvas.

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