DAP Ultra Clear sealant
DAP’s Ultra Clear flexible all-purpose waterproof sealant won’t crack, and its clearer-than-silicone finish stays crystal clear. Developed for a broad range of interior and exterior projects, Ultra Clear stays permanently flexible — even in cold weather — providing a 100% waterproof and weatherproof seal to keep out water, air and moisture for years without cracking or breaking down. It adheres strongly to a wide variety of building materials such as wood, glass, metal, tile, brick and stone without tearing or pulling away. It can even be applied in low temperatures (20° F) and on wet surfaces to stop leaks instantly and save time.