GE Concrete Silicone 2 Sealant, Lt. Gray, 10.1 Oz.

From the #1 Silicone Brand, Concrete Silicone 2 sealant (GE5020) is a high-performance, 100% silicone and 100% waterproof sealant for concrete, mortar and stone projects. This 30-minute rain-ready formula is light gray in color and offers permanent flexibility and excellent durability with 10-year mold-free product protection to help resist mold and mildew growth.Backed by a lifetime guarantee.