GE Silicone 2+ Window & Door 100\% Silicone is a 100\% waterproof sealant that is rain-ready in as little as 30 minutes. Ideal for a wide range of projects exposed to harsh weather from the attic to the basement. 100\% weatherproof, Freeze-Proof and Sun-Proof. It is permanently flexible with a 10-year mold-free product protection. It will not discolor most metal finishes and adheres to porous materials such as brick and mortar as well as woods, concrete, metals and vinyl. Guaranteed for as long as you own your home.