Superior quality, multi-purpose acrylic latex caulk plus silicone. Highly flexible and durable. Excellent adhesion. Cured caulk is mildew resistant. Interior/exterior use. Paintable. Water clean-up. 35 Year Durability Guarantee. Exceeds ASTM Specification C 834. Sealing Around Wood, Vinyl, And Aluminum Siding And Trim , Caulking Around Windows and Doors