Tartan 27' owner
Join Date: Jan 2008
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Most boats are laid up with polyester resin an cloth. Gel coat is essentially a polyester resin with pigments added.
Most cans of gel coat have labels that read something to the effect that "this product should only be applied on top of another polyester resin".
Interprotect 2000 is an epoxy based barrier coating system. There are some chemical adhesion issues between dissimilar resin based materials.
Personally I would rather use gel coat then painting this small area as it would last much longer then most paints but I am sure it would be much easier just to paint this area with a nice expensive marine paint. The problem with gel coat is that it is not a simple process like painting.
To properly gel coat even this seemingly benign 2" stripe around your hull/freeboard area would entail:
- sanding/fairing the area to be coated, removing most, if not all of the Interprotect 2000 that you just put down there
- wipe area with Acetone and apply gel coat, thinned or straight. Let cure.
- sand the area fair up to 600 or 1000 grit sandpaper
- polish, wax etc
As already pointed out the color will not likely match the rest at first but on your boat that may matter less because of your boot stripe configuration.
There are different types of gel coat products available. Some are pastes and some are more liquid as gel coat is usually sprayed into a mold when a hull is made.
Your boat, your choices, your time and money.
Have fun whatever you choose and be sure to post an 'after' photo of your work.
"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen
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