DAP® DYNAFLEX 230® is a premium elastomeric latex sealant with silicone-like toughness. It combines
outstanding durability, adhesion and flexibility with easy tooling, paintability, low odor & water clean-up.
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 baseboards to improve the energy efficiency of a
home and reduce utility costs. Cured sealant is mold and mildew resistant.
1. Apply in temperatures above 40ºF. Do not apply when rain or freezing temperatures are
forecasted within 24 hours. Cooler temperatures and higher humidity will slow down dry time.
2. If using the squeeze tube, remove cap.
3. Cut nozzle at 45º angle to desired bead size.
4. If using the cartridge, load into caulk gun.
5. Fill gap or joint with sealant.
6. If necessary, tool or smooth the bead of sealant with a finishing tool before sealant skins over.
7. Clean up excess wet sealant with a damp sponge before it skins over. Excess dried sealant must
be cut or scraped away.
8. Allow sealant to dry clear (approximately 7-14 days) before painting with latex or oil-based
paints.