Black Jack, 3.6 QT, Elasto-Kool 1000, 10 Year, White Siliconized Elastomeric, Roof Coating, Advanced Waterproofer, Professional Formula, Helps Reduce Cooling Costs, Expands & Contracts Up To 350%, Top Quality, Highly Flexible, White Acrylic Roof Coating, Silicone Enhanced For Increased Water Resistance, Adhesion & Life Expectancy, Resists Cracking & Peeling, Provides Highly Effective Barrier Against Sun's Heat & UV Rays, Helps To Cool Surfaces & Reduce Interior Temperatures. Energy Star Partner Rated.