Elastomeric coatings work by forming a durable, elastic layer over the roof surface. This layer expands and contracts with temperature changes, preventing leaks and reducing structural stress. The coatings also reflect sunlight, helping to lower indoor temperatures and reduce energy costs. https://www.quora.com/profile/Denis-Vigoo/What-Are-Elastomeric-Roof-Coatings-and-How-Do-They-Work