Rust-Oleum Stops Rust Universal Bonding Primer firmly bonds topcoats to any difficult-to-paint surface with maximum adhesion and superior durability. Perfect color is within reach with a quality base layer on your project. For the ultimate finish, apply to galvanized metal, wrought iron railings, furniture, aluminum flashings, PVC, porcelain, masonry, glazed brick, metal, wood, fiberglass and more. Primes any surface that is traditionally hard to coat including galvanized metal, PVC and two part epoxies Suitable for both interior and exterior use on metal, wood and more Water-based formula provides superior protection and rust prevention in a smooth, white finish Dries to the touch in 30 minutes and covers up to 100 square feet per quart Apply 2 or more light coats a few minutes apart