5 Gallon, White, Water Base, Maximum Stretch, High Strength Elastomeric Roof Coating, 25% Rubber, 75% Acrylic, Impervious To Water When Applied In A Uniform & Seamless Fashion With Adequate Mileage, Non-Toxic, Low Odor, VOC Free, Use For Waterproofing Roofs & Walls, Used On Metal, Tar & Gravel, Built Up, Rolled Roofing, & Many Other Surfaces, Can Be Used On EDPM, Concrete & Top Roofs If Super Primer Is Applied First, May Be Used As A Roof System With Super Elasto-Barrier Over Old Tar Flat Roofs, Tar & Gravel, Built-Up, Rolled Roofing, EDPM, Concrete, & Top, Coverage: 1 Gallon Per 100 SQFT Per Coat.