Siliconized White Acrylic Window and Door Caulk is waterproof, flexible, paintable in one hour, and has excellent resistance to climatic variations. This siliconized acrylic caulk is designed to seal with a flexible bond on porous and non-porous surfaces including doors, glass, windows, aluminum, masonry, granite, trim, baseboards, vents, attics, and basements. Resists climatic variations such as temperature, rain, and UV rays.