Silicone II gutter and flashing is a 100% silicone sealant that provides adhesion and premium performance, particularly in damp and wet environments. 1 component, noncorrosive neutral cure silicone and may be suitable for use on a wide variety of materials. Use on gutters, flashing, soffits, downspouts, and other construction applications. Sealant contains BIOSEAL mold and mildew product protection guarding the cured sealant against mold and mildew. It is supplied as a paste and upon cure produces a durable, formed in place long lasting, silicone rubber seal. Permanently waterproof. 3 hour rain ready can decrease the waiting time. Sun/freeze proof. The permanent flexibility of GE SIlicone II keeps it from breaking down under the sun"s UV rays and freezing temperatures. 10.1 fl. oz. cartridge. Not paintable.