GE Supreme Clear Silicone Window and Door Sealant 10.1 oz (Pack of 12)Supreme Silicone Window & Door sealant is a waterproof sealant that can provide a reliable seal in weather prone areas such as windows, doors, basements, roofs, sidewalks, siding, tuckpointing and attics. This sealant offers 40% more flexibility than Class 25 sealants and 7X stronger adhesion than Silicone 1 sealant. And, it offers 50% joint movement capability without cracking, shrinking, breaking down or washing away. This sealant has lifetime mold