I've not repaired fibreglass before, and really had no intention of doing so. But is it worth cleaning up and putting some sheets of repair kit over the top?
Your thoughts and comments are appreciated.
Ok, thanks for all your help. Much appreciated, and i'm feeling much more confident in my fibreglass knowledge. I've used the grinder on the hull today and it appears some of you were right, it does go through to the gelcoat. Damn! Thanks TQA for the bright light tip.
Anyway, its very positive that I did grind through as I don't think it would've been the best maiden voyage.
Here's the latest picture:
Would you recommend chipping the gelcoat away completely or glassing over the crack using the gelcoat as a guide, then filling from the underside? I stopped at this point, just to assess the situation.
Polyester resin is a general-purpose resin suitable for a wide variety of applications. Methyl Ethyl Ketone Peroxide (MEKP) must be used as the catalyst to begin the curing process. Catalyzation rates can be varied with polyester resins in order to adjust for various environmental conditions. In thin laminations or when gel coat is sprayed as a topcoat, the surface may remain tacky and not cure properly if left exposed to the air. To get a complete cure, thin laminations or top coats must contain either styrene wax solution of have a coat of polyvinyl alcohol (PVA) solution sprayed over them to seal out the air. With the former, the wax "floats" to the surface as the resin cures, acting as a barrier to the air. Styrene wax must be sanded off after curing, but PVA can be rinsed off with warm water.