DAP Wall and Cavity Foam Aerosol 20 oz White with Wide Spray Applicator for Interior Home Insulation
DAP Wall and Cavity Foam Aerosol 20 oz White with Wide Spray Applicator
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DAP Wall and Cavity Foam Aerosol 20 oz White with Wide Spray Applicator

42 ratings

Key item features

  • Versatile Application: This foam insulation spray is designed for interior projects, effectively filling, air sealing, and insulating rim joists, touch-ups, and smaller repairs on various building materials including wood, masonry, metals, and drywall.
  • Efficient Insulation: The self-contained, pre-mixed polyurethane foam provides year-round thermal insulation savings and seals out air, enhancing R-Value with an ASTM C518 Aged R-Value of 4.1 at 1" (25mm).
  • Advanced Applicator: Features patent-pending technology for a wide spray applicator with a responsive flow control trigger, delivering a consistent wide-angle pattern similar to two-component systems in an easy one-part system.
  • Moisture & Fire Protection: Its high closed-cell formula, per ASTM D6226, helps prevent moisture intrusion and is Class A Fire Rated to meet building codes, contributing to up to 30% energy savings.
  • Quick Curing: The foam dries tack-free in 7 to 12 minutes and achieves full cure within 24 hours, depending on thickness, temperature, and humidity, covering up to 11 theoretical board feet per 20-ounce can.
  • Easy Cleanup: Cured foam requires mechanical removal, while uncured foam can be easily cleaned from most surfaces using a foam cleaner or acetone.
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Customer ratings & reviews

4.6 out of 5 stars
stars
42 ratings42 reviews
How item rating is calculated
  1. 5 stars83% (35)
  2. 4 stars7% (3)
  3. 3 stars2% (1)
  4. 2 stars2% (1)
  5. 1 star5% (2)

Reviews summary

Pros

  • : Simple adjustable applicator requires minimal effort.
  • : Provides a lot of product.
  • : The tool gives even coverage and precise fill in gaps.
  • : The applicator covers evenly and seals gaps while drying.
  • : Effectively fills holes and gaps in various materials.
  • : It fills gaps and blocks openings to stop elements.
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Showing 1-3 of 42 reviews

Apr 21, 2026
Reviewer name: PolianaD
5 out of 5 stars
5 out of 5 stars review

♥️♥️♥️♥️♥️♥️♥️

[This review was collected as part of a promotion.] Thank you fluency to send this my husband really like it. I give it to him and he said this is very good and thank you so much for sending me this.❤️❤️❤️❤️💯💯💯💯

Review from influenster.com
Helpful?1V02ZFFPY1KH10338854489
May 27, 2025
Reviewer name: kristynh22_7968
5 out of 5 stars
5 out of 5 stars review

Great quick fix!

[This review was collected as part of a promotion.] This is a great quick fix for cracks or holes around our house. We used it to fill in around where the pipes come through our blocks and the floor/wall of the house. It drys fast and expands to cover the area. I think it is great value for a can and I was able to get every spot I needed filled. I like that I don't have to mix anything and can use one can to get the job done. It also seals air from coming thru and deters critters from wide open spaces. Definitely will purchase if needed again.

Review from influenster.com
Helpful?1V02ZFFPY1KH10338854489
Apr 8, 2025
Reviewer name: d_love93_5088
5 out of 5 stars
5 out of 5 stars review

Wall cavity foam

[This review was collected as part of a promotion.] This was very effective and durable. I was able to use it in my restroom and closet. It was safe to use and great value! I highly recommend it was easy to use.

Review from influenster.com
Helpful?1V02ZFFPY1KH10338854489
Current price is $21.75$1.09/oz
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