Radicalcy wrote:
Rick Buchanan wrote:
Maury, When ever you have a repair to make with fiberglass you should always try to cut away, or grind out all the old "white" looking glass in the damage area. The fabric still has fractured resin in it which won't allow new resin to saturate into the fibers as it should resulting in a bad repair. Try to avoid using epoxy resin, but do try to use Vinylester which is a high grade polyester type. Your boat was made at the factory with polyester.
Actually, epoxy resin adheres better to polyester than does polyester (to polyester)
Yes, but not the other way around (polyester to epoxy). Good luck getting gel coat to come out right when sprayed on top of an epoxy patch. Unless you have some overriding reason to use epoxy, you should use polyester resin to repair a boat that's made of polyester resin & glass.
It's cheaper, easier to work with, you can control the cure time by varying the catalyst, and you don't have to do anything special to get gel coat to adhere.