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. GE All Purpose Window and Door Silicone 1 sealant is also formulated to resist stain-causing mold and mildew growth, and it comes with a seven-year mold-free product protection. 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.