Can be used alone or with fiberglass tape, cloth or mat to repair damaged fiberglass boats, snowmobiles, jet skis, bathtubs and showers. Can also be used as a sealer on damaged and rotted wood. Seals concreted, is great on large or small metal rust-outs and joins most surfaces together while creating a strong and long lasting bond.

The same high-strength polyester resin that is used to build most boats.