UMA makes paint stick to tough to paint surfaces including ceramic tile, porcelain, glass, Formica and melamine laminates, PVC, fiberglass, many plastics, Kynar and Silicone Polyester siding, aluminum, galvanized and many metals plus wood. It provides excellent adhesion and wet adhesion to Hard to Paint surfaces even when wet and can be used for both indoor and outdoor applications. and can be used with Oil/Alkyd, Latex, Urethane, Epoxy and Lacquer top coats.