COOLGUARD™ Roof is a powerful, high performance roof sealer, made from a thick and single component urethane that is 100% elastomeric and will waterproof roofs and walls. It will provides a single monolithic layer that waterproofs and insulates the surface. It significantly reduces the interior temperature of your house in two ways: 1. It will reflect 79% of all the sun rays, eliminating 89% of all the heat it received to the roof surface. 2. It uses Thermaflex Technology, a tiny insulating micro-spheres that increase dramatically in size as the exterior temperature of the coating rises and prevents heat from being absorbed by the surface.