DYNAFLEX 920 PREMIUM EXTERIOR ELASTOMERIC SEALANT
High-performance, solvent-based elastomeric sealant developed for professional siding and window installations. It forms a long-lasting seal that helps prevent water and air intrusion, goes on over wet or damp surfaces in extreme weather, and will not wash out if it rains before the sealant has fully cured.
- Meets ASTM C920, Class 25, and is rated for +/-25% joint movement (ASTM C719)
- Applies in temperatures from 20 to 120 deg F and bonds to wet or damp surfaces
- Crackproof, waterproof and weatherproof with excellent UV stability; the cured sealant resists mold and mildew
- Adheres to wood (painted or unpainted), vinyl, most plastics, aluminum and most metals, fiber cement, concrete, mortar, brick, stone, stucco, glass, ceramic and fiberglass
- Coverage: 31 linear feet at a 1/4" bead, 14 linear feet at a 3/8" bead
- Paintable once fully dried through, which takes 7 to 14 days depending on temperature and humidity
- Color: White (WT052) - DAP color-matches this line to the palettes of major siding manufacturers
- Manufacturer part: 7079889052
Tip: This sealant is self-tooling. Apply a convex bead that contacts both sides of the joint and leave it alone; natural shrinkage during cure pulls the bead flat or slightly concave. Use a foam backer rod where the joint is deeper than 1/2". Not for butt joints narrower than 1/4", joints larger than 1/2" wide by 1/2" deep, below-grade work, or continuous underwater use. It is solvent-based with a strong odor - clean up wet sealant and tools with mineral spirits rather than water, and wash hands with soap and water.