Rust-Oleum 380 Non Fibered Asphalt Emulsion Coating is a protective coating for new and existing smooth, asphalt built up roofs, modified bitumen roofing and foundations. The asphalt emulsion formula provides fast drying alternative to solvent-based coatings and works as a base coat for reflective coatings. Corrosion resistant coating helps bridge minor surface irregularities to seal and protect roofs. Will not run, crack or sag in extreme weather. Low odor. Dry time: 6 to 8 hour. 3 year shelf life.