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DAP DYNAFLEX 920 Premium Exterior Elastomeric Sealant, 10 oz, Multiple Colors
Regular price $12.30Orders start at $399 — combine any items to reach the minimum. Learn more
DAP DYNAFLEX 920 Premium Exterior Elastomeric Sealant, 10 oz, Multiple Colors
DAP DYNAFLEX 920 is a premium elastomeric exterior sealant developed for professional siding and window installations, sold in 10 oz tubes in 38 colors. It forms a long-lasting, waterproof and weatherproof seal against water and air intrusion, applies down to 20F and adheres to wet or damp surfaces. Pair it with siding and window installations for a color-matched, crack-proof finish.
Key Features:
- ASTM C920 Class 25: Meets ASTM C920, Class 25.
- Extremely flexible: Described as extremely flexible and crack-proof.
- Waterproof & weatherproof: Provides a long-lasting elastomeric seal that helps prevent water and air intrusion.
- Cold weather application: Applies at temperatures as low as 20F.
- Damp surface adhesion: Adheres to wet and damp surfaces.
- Self-tooling & paintable: Self-tooling formula that is paintable after cure.
- UV stable colors: Excellent UV stability with an extensive color offering.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | DAP |
| Sell unit | 1 tube (10 oz); select colors also offered by the box or case |
| Product line | DAP DYNAFLEX 920 |
| Available colors | 38 colors including White, Black, Gray shades (GY700-GY730), Beige/Biscuit shades, Brown shades, Blue shades, Red shades, Green shades, Clay shades and Nightfall |
| Available sizes | 10 oz cartridge |
| Dimensions | 10 oz tube |
| Approvals | Meets ASTM C920, Class 25 |
| Intended use | Professional siding and window installations, exterior sealing against water and air intrusion |
Coverage & How Much You Need:
Coverage depends on joint size; the sources do not state linear feet per 10 oz cartridge, so size quantities from your joint dimensions.
Fit and Compatibility:
Developed for siding and window installations and suitable for exterior building joints where a Class 25 elastomeric sealant is specified. Paintable after cure, so it can be finished to match surrounding materials.
Frequently Asked Questions (FAQ):
Q: What is included?
A: One 10 oz cartridge of DYNAFLEX 920 in the color you choose; the line offers 38 colors.
Q: How many linear feet does one cartridge cover?
A: The sources do not publish a coverage figure; coverage depends on bead size and joint depth.
Q: Can it be applied in cold or wet weather?
A: Yes, it applies at temperatures as low as 20F, adheres to wet or damp surfaces, and will not wash away when exposed to rain before full cure.
Q: Can it be painted?
A: Yes, it is paintable after it cures.
Q: What standard does it meet?
A: It meets ASTM C920, Class 25.
Q: Will it stay flexible?
A: It is an extremely flexible, crack-proof elastomeric sealant with excellent UV stability.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Choose DYNAFLEX 920 where siding and window joints need a color-matched, high-movement Class 25 sealant that can be applied in marginal weather. Tool the bead for full wet-out and plan to paint after full cure. Its cold-weather and damp-surface adhesion make it a good pick for late-season siding punch lists; still follow the label's joint preparation and cure guidance.
Follow the product label's safety instructions, including ventilation and keeping sealant off skin and eyes.
Order DAP DYNAFLEX 920 in one of 38 colors for your siding and window sealant work.
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