Formulated with innovative Xtra-Lite microspheres and 100% acrylic elastomeric resin. Incredibly strong Xtra-Lite microspheres reinforce this revolutionary roof coating with added durability and improved elasticity, while also making the product lighter weight and easier to lift, carry, and apply. 20% lighter than other premium products. This formula is so durable that satisfaction is guaranteed. The coating forms a thick rubber-like blanket of protection that expands and contracts with roofs. It remains flexible from -30 deg. F. to 160 deg. F. for long-lasting protection and provides superior reflectivity to lower interior temperatures and save energy. Helps absorb sound. Prolongs life of roof. Recommended for metal, concrete, urethane and polystyrene foam, brick, flat and barrel cement tiles, and aged aluminum coatings. You must use Kool Seal Kool-Lastik Primer, model No. 34-600, if applying to the following surfaces: Built-up roofs, modified bitumen, bonded tar and gravel, rolled roofing, most other asphaltic surfaces, and in ponding water situations. Cured elastomeric film is mildew and algae-resistant. Soap and water clean up - while wet. Reflects 90% + of the sun's rays and has energy savings up to 35%. Coverage: 80 to 100 sq. ft. per gallon, depending on surface.