DAP® SILICONE ULTRA™ Premium All Purpose 100% Silicone provides maximum silicone performance to seal out air and water in window, door and siding applications. It has +/-50% joint movement for maximum flexibility and adhesion so it withstands contraction and expansion caused by extreme temperature and weather fluctuations without cracking or losing adhesion. Water ready in 30 minutes for a 100% waterproof and weatherproof seal. Shrink and crack proof. Cured sealant is mould & mildew resistant. Low in odour and VOC compliant. Interior/exterior use. Lifetime Guarantee. Meets ASTM C920, Class 50.