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DAP DYNAFLEX 230 Premium Elastomeric Sealant in White provides a flexible, waterproof and weatherproof seal around windows, doors, siding, trim and baseboards. Its advanced acrylic latex formula handles expansion and contraction caused by changing temperature and humidity, helping joints stay sealed without cracking. It bonds to many common building materials, including painted and unpainted wood, aluminum, vinyl, glass, drywall, masonry, fiber cement, composite trim and PVC trimboard, making it suitable for interior and exterior projects.
The convenient 5.5 fl. oz. squeeze tube is ideal for smaller gaps, repairs and touch-ups, with hand application that requires no caulking gun. One tube covers approximately 30 linear feet with a 3/16-inch bead. The White color helps coordinate the seal with surrounding surfaces, and it can be painted with latex or oil-based paint after 2–4 hours; cool or humid conditions require more time. The low-odor formula tools smoothly and cleans up with water while wet. Cured sealant resists mold and mildew and meets ASTM C920, Class 25.
Apply to clean, dry, structurally sound surfaces between 40°F and 100°F. Protect from rain and freezing temperatures for 24 hours, and allow approximately 24 hours before water exposure. Suitable for joints up to 2 inches wide and 1/2 inch deep; use backer rod for deeper gaps. Not intended for continuous underwater use or filling surface defects. Coverage and drying time vary with application conditions.
