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Old 15-07-2009, 14:17   #1
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Polyurethane on Gel Coat

Someone that being me, spilled some polyurethane on the non skid. It has dried and cured,(months), and the Admiral has tried everything to get it off. Are there any chemicals that will dissolve poly and not damage the gel coat. She has tried her usual stuff, BKF, Tilex, etc etc.
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Old 15-07-2009, 14:40   #2
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You might try "Goof Off" (see Goof Off The Ultimate Remover Reviews. Buying guides & consumer product reviews at Epinions.com ), available at Lowes, Home Depot et al. To be effective you may have to cover the spill with a cloth soaked with the material and then cover that with some aluminium foil so that the fumes persist and can soften the poly but it will work, albeit slowly. Note that this material is very toxic so one needs be careful when using it. Read and follow the "safety Precaustions"

FWIW...

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Old 15-07-2009, 14:48   #3
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Is it a two part linear polyurethane like Awlgrip or is it a one part polyurethane? Its probably a one part but I just wanted to make sure. It makes a big difference.
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Old 15-07-2009, 16:58   #4
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There are two types of Goof Off, the original and the formula for latex paint. Be sure to get the right one, which is probably the original formula.
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Old 15-07-2009, 17:35   #5
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it is a single part poly
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Old 15-07-2009, 23:22   #6
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I'd try acetone, mineral spirits, or denatured alcohol, but I don't know if they will soften it once it's cured...
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Old 16-07-2009, 15:26   #7
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Cured one part polyurethane is probably going to require a paint remover, but not one from Home Depot! I've tried two that are for removal of bottom paint, varnish, enamels and polyurethanes, and formulated not to damage gelcoat. One is from Interlux called "Interstrip 299E Fiberglass Stripper". I found that, even though it says it won't, it tends to soften gelcoat slightly; if you're careful, it will work OK. The other is from Pettit called "Bio Blast Paint Remover"; it works very well and not nearly as toxic. Both are, or were, available from West Marine. West has supposedly discontinued carrying "Bio Blast" for who knows what reason.
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Old 28-05-2012, 16:35   #8
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Re: Polyurethane on Gel Coat

Quote:
Originally Posted by GOsail View Post
Cured one part polyurethane is probably going to require a paint remover, but not one from Home Depot! I've tried two that are for removal of bottom paint, varnish, enamels and polyurethanes, and formulated not to damage gelcoat. One is from Interlux called "Interstrip 299E Fiberglass Stripper". I found that, even though it says it won't, it tends to soften gelcoat slightly; if you're careful, it will work OK. The other is from Pettit called "Bio Blast Paint Remover"; it works very well and not nearly as toxic. Both are, or were, available from West Marine. West has supposedly discontinued carrying "Bio Blast" for who knows what reason.
Has anyone tried Soy StripMarine Coating Remover?

John B.
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