Ames® Maximum-Stretch® is a thick, high quality rubber and acrylic elastomeric coating and sealant designed specifically for waterproofing, repairing and maintaining many different types of roofs. It dries rapidly to form a cool white, watertight roof membrane with up to 750% elasticity that expands and contracts with the roof surface. Maximum-Stretch is tintable using latex paint colorant. It seals, saves, and extends the life of old roofs and is an excellent choice for old tar roofs. Maximum Stretch® is also an excellent exterior or interior elastomeric wall coating. 1 gallon covers 100 square feet per coatTintable white25 percent rubber, 75 percent acrylicWaterproofUp to 98 percent reflectiveReduces roof temperatureReduces energy costs750 percent elastic