Rust-Oleum 301904 7-Year Elastomeric Roof Coating comes by the gallon and is designed to provide weather resistance and improve the energy efficiency of your home. This white roof coating has a 67 percent initial reflectivity value, protecting your roof and keeping your home cool in the hot summer sun. Its long-term durability and excellent resistance to weathering mean that one application will keep your roof weather-tight for seven years. This Rust-Oleum roof coating works to waterproof and weatherproof several roof types: metal, weathered single-ply membranes, smooth surface asphalt built-up and modified bitumen roofing substrates. It is resistant to mildew and dirt-pickup, so it will remain bright white. Formulated to meet and/or exceed the standards established in ASTM D 6083 Up to 7 years of performance Rain resistant in six hours
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