DAP Dynaflex 230 is a premium elastomeric latex sealant putty with silicone-like toughness. Sealant combines outstanding durability, adhesion and flexibility with easy tooling, paintability, low odor and water clean-up. Latex sealant is highly flexible to handle joint movement caused by variations in temperature and humidity without cracking. Provides a long-lasting, durable seal that is 100% waterproof and weatherproof. Product is ideal for caulking and sealing air leaks around windows, doors, siding, trim and baseboards to improve the energy efficiency of a home and reduce utility costs. Cured sealant is mold and mildew resistant. Meets ASTM Specification C920, Class 25. VOC compliant. Interior/exterior use. DAP caulk and sealants provide durable performance for a variety of projects. Interior and exterior use. Selling unit is 10.1 ounce.