Gluvit barrier coat seals and protects hulls and decks. Provides superior protection for fiberglass, wood, aluminum and steel. Seals leaky seams and rivets in aluminum hulls and leaks around fiberglass cabins or decks. Hard protective coating flexes with hull movements to bridge and seal hairline cracks. Gluvit fills minor cracks and pinholes. Its long working time allows penetration into cracks to seal and strengthen. Acts as a barrier coat to minimize water absorption and galvanic corrosion. Deteriorated wood can be renewed with a few strokes to penetrate and strengthen stringers, decking and molding.