A one-part, moisture cure, medium modulus sealant that provides durable, flexible, watertight joints and offers outstanding unprimed adhesion to most non-porous substrates. It is specifically developed for sealing dynamically moving joints. Quality-conscious architects, specifiers and construction professionals already know that silicone sealants from Dow Consumer Solutions outperform urethane. But if you thought silicone was only for big-budget, high-end construction projects, think again. With DOWSIL Contractors Weatherproofing Sealant (CWS), you can enjoy the long-life weather resistance of silicones. This versatile, one-part 100% silicone sealant delivers outstanding life-cycle value and lower installed costs at a price that is competitive against comparable urethane products. Virtually unaffected by ultraviolet (UV) light and weather extremes, DOWSIL Contractors Weatherproofing Sealant provides all-weather application and performance. Plus, its far more durable than organic-based materials ? protecting buildings typically three times longer than organic materials in the same applications.