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

44 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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Specs

Industrial sealant type, Polyurethane Foam Wall & Cavity Foam SealantRec. use, InteriorRecommended surface, Multi-SurfaceDry time, 24 hRec location, IndoorBrand, DAP

About this item

Product details

DAP Wall & Cavity Foam with Wide spray Applicator is a self-contained one component polyurethane foam in an easy to use wide spray aerosol can. Effectively air seals and insulates homes and buildings while enhancing R-Value, and providing Class A fire resistance. The patent-pending technology offers a wide broadcast spray pattern similar to two-component systems, but in an easy to use one-component solution that can be applied in a wide temperature range of 40°F to 120°F. Ideal for rim joists, touch-ups or smaller repairs and projects. Applicator Included. Product is intended for interior use. Selling unit is 20 ounce.
  • Use foam insulation spray to fill, air seal, and insulate rim joists, touch ups, smaller repairs and targeted projects on interior projects, use on a variety of building materials: including wood, masonry, metals, drywall
  • Self contained, pre-mixed polyurethane foam in a portable container seals out air and provides thermal insulation savings year round
  • Patent pending technology provides spray similar to a two-component product in an easy one part system; Wide spray applicator with responsive flow control trigger and a consistent wide-angle pattern
  • High closed cell formula, per ASTM D6226, helps keep moisture out of structures and is Class A Fire Rated to meet building code, saves up to 30% on energy costs - meets ASTM C518 Aged R-Value of 4.1 at 1" (25mm)
  • Foam dries tack free in 7 to 12 minutes, reaches full cure in up to 24 hours (depending on foam thickness, temperature/humidity)
  • Insulating foam aerosol spray canister covers up to 11 theoretical board feet per 20 ounce can
  • Cured foam must be removed mechanically, while uncured foam can be cleaned from most surfaces using a foam cleaner or acetone
info:
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Specifications

Industrial sealant type

Polyurethane Foam Wall & Cavity Foam Sealant

Rec. use

Interior

Recommended surface

Multi-Surface

Dry time

24 h

Warranty

Warranty information

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Warnings

Customer ratings & reviews

4.6 out of 5 stars
stars
44 ratings43 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars84% (37)
  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 43 reviews

Oct 22, 2026
Reviewer name: curtis
Top Reviewer
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Wide angle works where straw dispeners just waste

Far better for flats and angles/inside corners than any regular straw dispenser can, the wide spray pattern works and works well.

Helpful?1V02ZFFPY1KH10338854489
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
Current price is $20.37$1.02/oz
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