Rust-Oleum, 12 oz. Spray, Black, Triple Thick Roof Patch & Sealer. Patches and repairs a variety of roofing substrates to stop leaks in minutes. UV-resistant acrylic formulation provides a water tight, flexible seal that prevents moisture penetration and corrosion for a long lasting repair. Ideal for patching larger roof splits, cracks and tears. For best results, combine usage with the Rust-Oleum Roof Patch Cleaner & Primer to prep surface and promote adhesion for longer lasting repairs. Adheres to TPO, EPDM, KYNAR(R), asphalt, shingles, metal, aluminum, Kynar, concrete, modified bitumen, gutters, asphalt, BUR, all single-ply membranes, and previously coated substrates, not including silicone.