10 Best Best Expanding Foam of 2025

Tested and Reviewed: Top 10 Best Expanding Foam deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

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

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Editor's bottom line:

“This best expanding foam is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

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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Picked by 397 people today

9.5

STANLEY

Stanley F903 Black Spray Foam Sealant (2x12oz) – Waterproof Expanding Polyurethane Foam for RV, Pond, Waterfall, Landscape & Automotive Applications – UV Resistant, Gap Filler Foam | 2 Pack

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Main Highlights

DISCREET BLACK FOAM DESIGN: Deep black color blends naturally into rock features, landscaping, and RV exteriorsideal for creating clean, professional-looking seals in visible outdoor or automotive areas.
YEAR-ROUND PERFORMANCE & DURABILITY: Engineered to perform reliably across all seasons with excellent resistance to UV, and temperature extremes. Maintains a strong seal even in fluctuating climates.
SAFE FOR PONDS, PLANTS & WILDLIFE: Non-toxic and waterproof formula is safe for aquatic use and landscaping. Perfect for sealing in environmentally sensitive spaces without compromising safety.
MULTI-SURFACE, HIGH-YIELD SEALANT: Adheres to stone, concrete, metal, wood, and plasticideal for RV maintenance, pond building, landscape design, and more. Fills gaps up to 3 with excellent insulation and sealing properties. Apply between 41°F and 86°F for best results. For cold weather, allow the can to reach room temperature (~68°F) to ensure full expansion and adhesion performance.
SAFE FOR PONDS, PLANTS & WILDLIFE: Non-toxic and waterproof formula is safe for aquatic use and landscaping. Perfect for sealing in environmentally sensitive spaces without compromising safety.

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9.5

Loctite

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

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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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9.2

Great Stuff

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

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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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9.0

Loctite

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

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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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8.8

Tomcat

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

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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
To apply sealant, attach the reusable straw and 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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8.6

Red Devil

Red Devil 0913 Spray Foam & Fill Small Gaps & Cracks Expanding Insulation, Polyurethane Sealant, 12 oz, Off-White, Pack of 1

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Main Highlights

FILLS SMALL 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
Use for Gaps & Cracks up to 1" in size
Seals, Bonds & Insulates
Fills holes up to 1" in ceilings floorboards concrete and cinder block walls

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8.3

DAP

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

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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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8.1

professional soma fix

Spray Foam - Expanding Foam, Polyurethane Gap Filler for Doors, Windows, Pipes, Frames, Cracks & Holes + All-Weather (17 oz / 500ml)

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Main Highlights

STRONG BOND - Expanding polyurethane foam adheres firmly to concrete, wood, metal, plastic, and more. Delivers long-lasting structural support and sealing
MULTI-PURPOSE GAP FILLER - Perfect for sealing windows, doors, pipe penetrations, and filling gaps or cracks in walls, frames and joints indoors and outdoors
ALL-WEATHER PERFORMANCE - Designed to withstand harsh weather, moisture, steam, seawater, and even dilute acids or alkalis. Suitable for year-round use
THERMAL & SOUND INSULATION - Reduces heat loss and blocks noise transfer for better energy efficiency and acoustic comfort
EASY APPLICATION - Just shake, attach the nozzle, and spray. Foam expands to fill gaps and cures quickly with ambient humidity

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8.1

Fiberglass Supply Depot

Fiberglass Supply Depot 6 Lb. Density Expanding Pour Foam, 2 Part Polyurethane Closed Cell Liquid Foam for Boats, Dock Flotation, Carving, Soundproofing, Filling Voids, and Insulation (1 Gallon Kit)

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Main Highlights

Flotation Foam is a polyurethane 2-part foam that, when mixed in equal parts and poured in place this foam will soundproof, insulate, or provide extra buoyancy.
6LB. Density polyurethane flotation Foam 1 Gallon Kit; Consists of 1/2 gallon of Part A and 1/2 gallon of Part B and produces 1.5 cubic feet.
Once fully cured this foam can be laminated over with any type of polyester, epoxy or vinyl ester resin without melting.
The 6LB density also works well in floating decoy or taxidermy applications as well as many other sculpting, casting, carving and other filling applications
All expansion rates and times given are temperature critical. Temperatures below 75° F will lower the expansion rate therefore requiring more foam. Ideal working temperature is 75° to 80° F or above. Accurate measuring of these products is extremely critical. Working time before foaming: approx. 45 seconds Time before full expansion: approx. 5 minutes

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Our Best Overall Choice

Best Choice

9.7

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

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

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.

Show Price

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