Amazing GOOP Marine Epoxy Paste is formulated to easily fill holes, gouges, cracks, splits, fractures, rust-outs, dry rot and fiberglass gel coat blisters. It bonds permanently to fiberglass, wood, steel, aluminum, most plastics as well as many other substrates. Marine Epoxy Paste forms a weatherproof bond and offers high impact resistance with no sag. Once cured, it can be sanded, ground, drilled, tapped, sawed, will accept self tapping screws and painted with most paints.