Rust-Oleum? 510 fibered aluminum roof coating is a metallic pigmented coating used for rust-proofing and weatherproofing metal roofs and sidewalls and as a reflective coating for built-up roofing (BUR) and modified bitumen roof systems. Rust-Oleum? 510 fibered aluminum roof coating reflects heat, prevents corrosion and protects against mild acid and alkali fumes on a variety of substrates, including metal, transite, built-up roofing and modified bitumen. This reflective coating protects low and steep slope roofs from harmful UV damage while supporting overall energy efficiency.