DAP Dynaflex 230 Window, Door & Trim Sealant White 5.5 oz

DAP Dynaflex 230 is a premium elastomeric latex sealant with silicone-like toughness that still paints and cleans up with water. This 5.5 oz white squeeze tube needs no caulk gun, so it is handy for sealing gaps along trim, baseboards, molding and window and door casings, and for stopping drafts before winter. DAP rates it 100% waterproof and weatherproof for interior and exterior use.

Highlights

• Flexible: handles plus or minus 25% joint movement without cracking
• Seals joints up to 2 in wide
• Paintable with latex or oil-based paint; low odor; water cleanup
• Cured sealant is mold and mildew resistant
• Good on composite wood and PVC trimboard; DAP Lifetime Guarantee

Specifications

How to apply

1. Remove old caulk, dirt and loose material. The surface must be clean, dry and sound.
2. Remove the cap and cut the nozzle at 45 degrees to the bead size you need.
3. Fill the gap, then tool the bead with a finishing tool before it skins over (about 10 minutes).
4. Wipe excess wet sealant with a damp sponge. Dried sealant has to be cut or scraped away.
5. Let it dry 2 to 4 hours before painting with latex or oil-based paint. Reseal the tube to store it.

Good to know

• Outdoors, do not apply when rain or freezing temperatures are forecast within 24 hours.
• Not for continuous underwater use or for filling surface defects.
• Adheres to painted and bare wood, vinyl, aluminum, most metals and plastics, glass, drywall, plaster, brick, stone, concrete, stucco and fiber cement.

Questions

Dynaflex 230 or Alex Fast Dry?

Dynaflex 230 is the more flexible sealant (ASTM C920, Class 25, joints up to 2 in wide) for windows, doors, siding and trim that move. DAP Alex Fast Dry is a painter's caulk for small interior gaps up to 3/8 in that you want to paint in 20 minutes.

How far does one tube go?

DAP lists about 30 linear ft at a 3/16 in bead from the 5.5 oz tube.

More in caulk and sealants and DAP.

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