Top 10 Best expanding foam in 2026

Last Updated - 6/29/2026

🏆Best Choice

Loctite

Loctite Tite Foam Big Gaps Spray Foam Sealant, 12 fl oz Can, 1 Pack - Polyurethane Expanding Insulation

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Expands To Fill: Loctite Tite Foam Big Gaps fills, seals, and insulates effectively around gaps and cracks up to 3 inches in size
•High Density Foam: Offers high density with a uniform cell structure for durability and overall insulation for your remodeling needs
•Superior Flexibility: Withstands building and material movement without compromising its seal
•Strong Adhesion: Sealant bonds to most building materials like wood, concrete, brick, stone, metal, pvc, and more
•UV Resistance: Withstands harsh UV rays for long lasting results

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$7.98

$9.99

-20%

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Loctite

Loctite Tite Foam Gaps & Cracks Spray Foam Sealant, 12 fl oz Can, 1 Pack - Polyurethane Expanding Insulation

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Expands To Fill: Loctite Tite Foam Gaps & Cracks fills, seals, and insulates effectively around gaps and cracks up to 1 inch in size
•Premium Durability: Polymer foam based on purified and concentrated ingredients withstands harsh UV rays for long-lasting results
•High Density Foam: Offers high density with a uniform cell structure for durability and overall insulation for your remodeling needs
•Superior Flexibility: Withstands building and material movement without compromising its seal
•Strong Adhesion: Sealant bonds to most building materials like wood, concrete, brick, stone, metal, pvc, and more

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$6.98

$8.99

-22%

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Tomcat

Tomcat Rodent Block Expanding Foam Barrier, Fills Gaps to Keep Mice From Entering the Home, 12 oz.

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•Tomcat Rodent Block Expanding Foam Barrier fills gaps and cracks to block mice from coming inside your home
•Our spray foam is the pesticide-free way to create a rodent barrier
•This expanding foam provides a long-lasting, airtight, and water-resistant bond to most building materials
•Spray in crevices inside and outside your house, including the garage, attic, basement, and foundation
•Tomcat Rodent Block Expanding Foam Barrier can be trimmed, sanded, and painted if desired

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$9.97

$12.99

-23%

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Red Devil

Red Devil 0909 Spray Foam, Fill Large Gaps & Cracks Expanding Insulation Polyurethane Foam Sealant, 12 Oz, Off White

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•FILLS LARGE HOLES, GAPS & CRACKS: Ideal for insulating and preventing drafts
•USE INSIDE OR OUTSIDE: Can be used anywhere around the home
•SANDABLE, PAINTABLE & STAINABLE: Can be sanded, painted or stained after curing
•ADHERES TO: Painted and unpainted wood, concrete, cinder block, aluminum & fiberglass
•SOLVENT CLEAN UP: Requires the use of a solvent for cleanup
•12 oz aerosol great for smaller jobs
•Seals bonds and insulates
•Fills large and small holes in ceilings floorboards concrete and cinder block walls
•Seals around ducts cables plumbing areas and central heating pipes
•This item is not for sale in Catalina Island

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$7.19

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STANLEY

Stanley F993 Expanding Foam Sealant Spray – (2x12oz) Gaps & Cracks Filler, PestBlocker for Indoor/Outdoor Use – Paintable, Waterproof, Polyurethane Insulation Foam with Straw Applicator | 2 Pack

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Powerful and Long-Lasting Seal: Strengthen your home’s defenses with Stanley Block Spray Foam, a high-expansion formula that seals gaps and cracks from 1" to 3". Ideal for use around doors, windows, pipes, and wall openings to create a secure and protected environment.
•Total Coverage for Entry Points: This versatile foam expands to fill cavities, joints, and structural gaps, helping block unwanted air and environmental elements from entering. An excellent choice for use in garages, attics, crawl spaces, and basements.
•Strong Adhesion Across Surfaces: Bonds firmly to wood, concrete, drywall, and more—delivering tight insulation with durable sealing. Ideal for reducing drafts and improving energy efficiency in both residential and commercial settings.
•Weather-Resistant and Durable: Cures into a rigid, waterproof barrier that stands up to sunlight and changing temperatures. Meets fire class B3 standards for added peace of mind and long-term performance.
•Clean, Paintable Finish: Designed for smooth application and clean results—this foam is odor-free, easy to trim, and fully paintable once cured, making it ideal for exposed areas and final touches.

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$19.49

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Touch 'n Foam

DAP Touch ‘n Foam Max Fill Maximum Expanding Foam Sealant, Off White, 12 Oz (7565000043)

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•3x Expansion to fill gaps great than 1 inch wide
•Weather resistant bond that seals out drafts
•Blocks insects and pests
•Water resistant and fire retardant
•Paintable and sandable foam sealant can be used indoors or outdoors

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$9.82

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Umail

8 Pcs 14”x16” Expanding Foam Packaging for PC & Irregular-Shaped Items - Shockproof Expandable Packing Foam, Protective Computer Shipping Material for Electronics & Fragile Devices

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•PERFECT PACKING SOLUTION: Umail’s expanding foam for shipping are used to use on an industrial scale for packaging odd shaped products, or oddly shaped items, meters, vases, crafts, and even a fully built PC with GPU installed, pc packing foam. They are great for shipping fragile items.
•WORK QUICKLY: When you crack “L” symbol it immediately comes in contact with the reactant in the “R” symbol. You have only a few seconds to thoroughly combine the two before the final product bursts through a membrane and fills the envelope, so it's super important that you don't start making the foam and expanding it until you have all the supplies you need right there and you're ready to go. Once you get started, you've only got a short amount of time before the foam hardens up and feels like a Styrofoam cup.
•EASY TO USE: Place foam bag on desk, crack “L”, you will hear “peng” sound, then slap “L” and “R” with both hands quickly. Pat 20-25 times within 8 seconds. Then wait for liquid expand and break through L/R area, and quickly distribute liquid evenly throughout bag. Note: Only simple spreading to all corners of the bag is required here (e.g., follow the video instructions), do not keep spreading, as it will disrupt the foaming process. Once you've done that, you should position your item and gently push it into the expanding foam. In just a few seconds, the foam will harden and form a bespoke mold around your object, providing optimal protection as it envelops even the tiniest components
•WHAT YOU WILL GET: 8 pcs individually packaged expanding foam packaging bags. We recommend used for box size of 8"x8"x8". Please note that the heat generated when slapping the pc shipping foam bag is normal and it will soon return to room temperature, just like holding a hot cup of coffee.
•WATCH TUTORIAL: If first time user, watching tutorial or instructional video at listing to get a better understanding of how foam expands and how to apply it properly. This will help ensure a good results and prevent expandable foam from expanding more than intended
•SHIPPING PC: According to experience, when using expanding foam for pc shipping, please place it in case as soon as bag starts to expand. It will automatically adapt to the shape of computer, providing protection, not wait until bag expanded significantly. Be careful to avoid sharp objects.

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$24.59

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KRAKEN BOND

Kraken Bond Gaps & Cracks Expanding Foam Sealant - (2x12oz) High Expansion Polyurethane Spray Foam for Window & Door, Straw Use Waterproof High Yield Gap Filler - 2 Pack

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•EASY TO DISPENSE: Kraken Bond Spray Foam Insulation features a single-component, moisture-curing, and self-expanding aerosol polyurethane foam. Designed for easy dispensing through the straw adapter included with each can.
•SAFETY & QUALITY ASSURED – Kraken Bond expanding foam sealant is UL certified, meeting strict safety and performance standards for ultimate reliability.
•OPTIMAL TEMPERATURE GUIDANCE FOR BEST RESULTS: Achieve peak performance by ensuring the can is at an optimal temperature of 68°F before use. Application is effective in a range of 41°F to 86°F, allowing for flexibility in varying weather conditions. For cold climates, let the can acclimate to room temperature to maintain top-notch results without any compromise in product quality or performance.
•VERSATILE USE: Perfect for filling window and door frames, large gaps, joints, cavities, electrical outlets, water pipes, and wall penetrations. A dependable solution for multiple applications.
•SAFE AND EFFECTIVE: Recommended for use with Kraken Bond Spray Foam Cleaner (sold separately). Ensure safety by wearing protective gloves, safety glasses, and protective clothing during application.

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$14.95

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DAP

DAP Wall and Cavity Foam with Wide Spray Applicator Aerosol, Off White, 20 oz. (7565000370)

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Use foam insulation sprayer to fill, air seal, and insulate stud wall cavities, rim joists, crawlspaces, attics and basements on homes and buildings
•Closed cell spray foam formula keeps moisture out of structures and is Class A Fire Rated to meet building codes; interior use on a variety of materials: including wood, masonry, metals, drywall
•Foam dries tack free in 7 to 12 minutes and fully cures in 4 hours (depending on foam thickness, temperature/humidity)
•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
•Enhances R-Value of structures, seals out air and provides thermal insulation savings year round; saves energy and up to 30% on energy costs - meets ASTM C518 Aged R-Value of 4.1 at 1" (25mm)

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$26.53

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Great Stuff

Great Stuff 99108824 Smart Dispenser Gaps & Cracks, Cream, 12 Ounce

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•THE GAP AND CRACK ATTACKER! Reduce drafts and save energy
•THE GAP AND CRACK ATTACKER! Reduce drafts and save energy
•No drips, less mess - foam stops where you stop
•Reusable for up to 30 days - use again and again
•Precise, greater control

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$8.18

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