Adhesive Sealant White Caulking Trim for Shower applications. Easy installation, simply peel and stick adhesive-backed strip into place. Can be used over existing caulk or for new installations, as it makes for a beautiful finish. (Will not adhere to silicone caulk) Prevents water from leaking along the base of the shower door, mildew-resistant product. Sealer Trims are 100% waterproof and will not crack, shrink or dry out. With antimicrobial product protection to fight the growth of odor and stain causing mold, mildew and bacteria. Seals the gaps around bathroom fixtures. White sealer trim 1/2 in" x 10 ft. sealer trim Quick and easy alternative to caulk Mildew-resistant Plastic strip goes over existing grout. Watertight seal Peel and stick application Will not stain or discolor.