This makes sense...but why is polyester-based gelcoat used on my epoxy boat? This is how it comes from the factory. Is it put on prior to full epoxy cure?
Mike.
From what I found, in general, you do not want to use a Polyester resin over cured epoxy because it will not bond well. However, epoxy will bond well to polyester and because of this it's safe to use epoxy to make repairs on most fiberglass substrates. This information is on the West System site - there's a lot of usefull stuff there.
