DAP Dynaflex Ultimate Premium All Weather Exterior Sealant is a professional-grade, all-weather exterior sealant for windows, doors, siding, and trim. Built on the Triple Action Advantage, it guns and tools smoothly in temperatures from 20 deg. F to 120 deg. F , bonds directly to wet and damp surfaces, and forms a permanently flexible, 100 percent crackproof and waterproof seal. Rain ready and paintable in just 30 minutes with most latex and oil-based paints, it adheres to wood, vinyl, fiber cement, brick, concrete, stucco, and most common building materials - no priming required in most cases. It meets ASTM C920, Type S, Grade NS, Class 50, with 50 percent dynamic joint movement and a service temperature range of -30 deg. F to 160 deg. F. Backed by a lifetime mold, mildew, and algae resistance guarantee.