GE All Purpose Window and Door Silicone 1 sealant is a 100% silicone and 100% weatherproof sealant that is ideal for areas that could be exposed to harsh weather conditions. Its same-day rain-ready formula is resistant to shrinking, cracking, freezing, and sunlight, so it's ideal for interior and exterior applications. Use this versatile sealant on windows, doors, siding, trim, molding, baseboards, vents, basements, attics, and around wires and pipes. Our sealant is extremely flexible and offers exceptionally strong adhesion, and it even meets ASTM C-920,Class 25 requirements.