madjack wrote:...the short answer to your questions...there are two types of resin...polyester and epoxy...I don't know about terminology across the pond but over here, something labeled as fiberglass resin would probably be polyester based and is not preferred...epoxy resin is a better choice and easier to work and more effective at repelling the elements...neither resin, in and of themselves is UV resistant and needs a top coat of some sort of UV resistant finish...over here, the choices are usually auto paint/clearcoat or a UV resistant urethane or urethane based(marine topside) paint...be sure to seal all ply edges very well...gap fillers can be wood putty(not preferred because of shrinkage) Bondo(auto body filler) or thickened epoxy...it is not necessary to cover the top with fiberglass cloth/resin combo...the epoxy resin is OK by itself.....
Mini Renegade wrote:Dougie, the epoxi these guys are talking about is really good stuff. The only down side is 1L is £90!!!!
I spoke to a boat builder who suggested mixing varnish and white spirit 50:50 and applying in liberal coats witha sand in between. It soaks in and sets hard as well as filling in the grain.
I coated an offcut of 5mm bendy ply (luan) twice, let it dry then split it. It had soaked right throughthe top ply (2mm)
thats my 2p
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