Top 10 Best foam sealant gap filler 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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GORILLA

Gorilla Spray Foam Sealant, Light Gray Color, 12 Ounce (Pack of 2) - Multi-Purpose Expanding Foam, Polyurethane Spray, Fills Gaps & Cracks

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Multi-purpose formula: This polyurethane sealant is an ideal foam insulation and gap filler of up to 1 inch voids or cracks
•Fast dry: Gorilla insulation foam dries fast and is trimmable in 45 minutes, sealing out air, moisture, pests, and insects quickly
•No warping/bowing formula: Our spray insulation meets AAMA 812-19, meaning no warping or bowing
•No shrinkage: When cured, our spray foam insulation maintains its integrity even in extreme temperature swings
•Use on: Our polyurethane foam is ideal for wood, metal, glass, masonry, plumbing, HVAC, electrical**, basements, crawlspaces, attics, ceilings, skylights, and more.

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$17.68

$22.99

-23%

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Topiverse

Topiverse Weather Stripping Door Seal Strip, Strong Adhesive, Weatherproof, Reduce Noise, Gap Filler, Foam Insulation Tape for Doors and Windows (1/2 in x 1/4 in x 13 Ft)

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•SIZE AND QUANTITY - Include 1 roll of 1/2 In x 1/4 In x 13 Ft, self adhesive foam tape. can be cut to any length by scissors easily. Fill gaps from 1/4'' down to 1/8''.
•FOAM INSULATION TAPE - Weather proof, dust proof, sound proof, shock absorbing, buffering, heat insulation. The high density weather stripping is made from CR foam, Neoprene, which has great sealing and resistance to deformation feature.
•STRONG GRID ADHESIVE - Our foam door seal adopt premium strong grid adhesive, guarantees the weather stripping sticks on firmly, non-degumming, waterproof. Work well from -50°C to 150°C.
•KEEP TEMPERATURE SAVE ENERGY - Sealing gaps of the doors and windows with this weather stripping, helps to reduce energy consumption, keep your room cool in summer and warm in winter.
•WIDE APPLICATION - The adhesive foam strip is tough and durable, help for preventing vibration and squeak. Widely used in door seal and window insulation. Useful for furniture, electrical cabinets, speakers, toys, handicrafts, sports equipment, vents, air conditioners, plumbing, hvac etc.

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$7.49

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Touch 'n Foam

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

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

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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$9.34

$9.99

-7%

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DAP

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

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

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 99108860 Smart Dispenser Big Gap Filler, Cream

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Fills, seals and insulates gaps up to 3 inches
•Comes with NEW SMART DISPENSER Straw
•Reusable up to 30 days
•No drips, less mess, foam stops when you stop
•Forms a long lasting, weather tight seal to reduce drafts resulting in greater comfort
•Adheres to wood, drywall, metal, masonry, glass and most plastics

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$9.99

$10.99

-9%

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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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