Frost King 5/8 in. x 20 ft. Polyurethane Caulk Saver

The Thermwell Products Co., Inc. 5/8 in. x 20 ft. Polyurethane Caulk Saver works with many types of caulk and sealant (caulk and sealant not included). The caulk saver features flexible polyurethane foam construction. It can be used on houses or on your driveway to fill in those cracks before caulking over.