ORIGINAL: James c harrell
Epoxy finish resin right? I was thinking about that but was wondering if there was a way to do it with regular fiberglass. Mainly because I have two whole cans of it and would have to buy the epoxy resin. Just looked at some and it ain't cheap!! Would epoxy bond as good to regular fiberglass?
If you want to use polyester resin (fiberglass resin) then you need to use a urethane foam or seal the polystyrene foam VERY WELL. The bonding of the resin (matrix) to the glass is dependent on the finish that is on the glass. Some finishes work only with polyester, some only work with epoxy, and some work with both. If the glass has the correct finish then epoxy will bond to the glass better than polyester can.
Epoxy "finishing" resin is an absolute misnomer. Why Pacer calls their epoxy resin a "finishing" resin totally eludes me. Maybe it's because it doesn't blush. Anyway, you would want to use an epoxy laminating resin not an epoxy bonding resin. The Pacer resin works but there are better choices in my opinion. The Pacer resin isn't that cheap either. It comes out $130 per gallon. There are many quality laminating epoxies that are under $100 per gallon.