DAP? DYNAFLEX 230? 100% waterproof window, door and trim sealant is DAP? ‘s most advanced latex sealant technology. It combines the outstanding durability, adhesion and flexibility of a silicone with the easy tooling, paintability, low-odor and water clean-up of a latex sealant. It is highly flexible to handle joint movement caused by variations in temperature and humidity without cracking. It provides a long-lasting, durable seal that is 100% waterproof and weatherproof. Ideal for sealing air leaks around windows, doors, siding, trim and baseboard’s to improve the energy efficiency of a home and reduce utility costs. Cured sealant is mold and mildew-resistant. Interior or exterior use.