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.