Rust-Oleum 510 Fibered Aluminum Roof Coating is a metallic pigmented coating designed for use on metal roofs, sidewalls and as a reflective coating for built up roofing and modified bitumen systems. Durable, energy efficient coating applies direct to tight rust and protects against harmful UV rays for long lasting protection. One coat coverage directly on tight rust - no primer needed; dries to the touch in 4 hours and full cure in 10-12 days. 53% reflectivity with Cool Roof Technology for energy efficiency and weather resistant in 24 hours. 7 Year Warranty.