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Author Topic:   Thompson's Water Seal on Boat Cover
JimU posted 06-07-2001 03:34 PM ET (US)   Profile for JimU   Send Email to JimU  
I read somewhere that if you sproyed your boat cover with a coat of Thompson's Water Seal (wood and deck treatment for decks and patios)it would substantially increase the life (10 years) and functionalty of a boat cover. Any experience in Whaler land? JIM
Peter posted 06-07-2001 03:49 PM ET (US)     Profile for Peter  Send Email to Peter     
What type of material is your cover made from?
hauptjm posted 06-07-2001 03:55 PM ET (US)     Profile for hauptjm    
Isn't Thompson's oil based? I would think that might "melt" the coating liner on the interior side of the cover. But hey, if it would work, it might be something to try!
lhg posted 06-07-2001 05:36 PM ET (US)     Profile for lhg    
If you're talking about Mill's sunbrella products, I think they would be shocked. Silicone is considered the proper waterproofing for marine canvas (which really isn't canvas). I use this on my Mills Whaler cover.
andygere posted 06-08-2001 09:46 PM ET (US)     Profile for andygere  Send Email to andygere     
Thompson's Water Seal is just wax disolved in a solvent. It's a lousy deck waterproofer, and it would be a lousy boat cover waterproofer because the solvent will probably attack the thread and fabric. I have had good luck with a silicone based waterproofer from Starbright.
Dick posted 06-08-2001 10:03 PM ET (US)     Profile for Dick  Send Email to Dick     
Thompson's on decks and hunting boots is great, but on a boat cover it would be like the old canvas tarps (if you are old enough to remember them). Use a silicone based spray, StarBrite, Mary Kate etc.

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