Henry 587, Gallon, White, Roof Coating, Is A Premium, High Solids, White Elastomeric Roof Coating Formulated With Resins, Fillers &Titanium Dioxide Pigments, The Coating's Elongation, Peel Strength & Solar Reflectance Values Offer Weather Protection, High Solar Reflectivity & Superior Longevity When Compared To Economy Grade Reflective Roof Coatings, When Cured, The Coating Allows Moisture Vapor To Vent, Or Breathe Out Of Underlying Substrate, Forms A Permeable Membrane, Which Prevents Liquid Infiltration, But Allows Moisture Vapor To Vent. Releases 91% Of The Sun's Heat Energy Efficient, Expands & Contracts Without Cracking Elastomeric, No Primer Needed On New Roofs Or Roofs In Excellent Condition.