Henry 687, 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.