|
Dave Cloud covers his foam with masking tape. it might help to flash off a hot, unwaxed gelcoat first. I'm not sure about compatibility, but you might get a head start on your shapes by using plumbing pipe insulation jackets. You can also buy urethane foam, which is impervious to polyester. Epoxy resin is another option, but if you want Bondo to stick to it, use System Three SB-112. That is a great barrier coat to stop rust, too. Unlike paint, it keeps even water vapour out.
|