United Coatings™ Roof Mate™ Top Coat is a water-based, acrylic elastomeric top coat that is part of the Roof Mate™ Coating System. Roof Mate™ Top Coat is designed to be applied over Roof Mate™ Base Coat. Roof Mate™ Top Coat forms a waterproof elastomeric seal, uniformly covering the substrate to form a monolithic coating that helps provide protection from normal weathering, aging, and ultraviolet exposure. It is made with premium-quality acrylic resins, which are combined with an effective biocide package and non-migrating fire retardants, resulting in superior durability, weatherproofing, ultraviolet resistance, algae/mildew resistance, and fire retardancy. Roof Mate™ Top Coat is a highly reflective, permanently flexible "breathable" membrane, allowing moisture vapor from the substrate or building interior to slowly escape while remaining impervious to mass water penetration from the exterior. It is also effective in sealing and encapsulating galvanized metal roofs, helping to prevent residual zinc run-off.