A professional industrial grade metal oil-based primer formulated to provide longlasting finish on old or new metal surfaces including railings, flashings, gutters, and fencing. Etching new galvanized metal is not necessary. Aluminum surfaces must be fully sanded prior to application. Special high-hiding characteristic of this primer permits use as a 1 coat, low sheen finish or as a primer under other coatings. Apply with roller or brush. coverage: Approximately 400 Sq. Ft. per gallon. Do not thin. Dries to touch in 6 to 8 hours. Clean up with mineral spirits and immediately dispose of rags or steel wool in water-filled container.