Henry 687, 5 gallon, enviro white, premium roof coating, high solids white elastomeric roof coating formulated with acrylic polymers, resins, fillers & titanium dioxide pigments, dirt pick up resistant (dpr) technology prevents dirt & dust buildup, keeping the roof whiter & more reflective longer, when cured, the coating forms a permeable membrane, which prevents liquid infiltration, but allows moisture vapor to vent, or breathe out of underlying substrate.