(8 pack) Würth Expanding Foam Sealant for Big Gaps up to 3 inches, 12oz Can, Insulating Spray Foam
(8 pack) Würth Expanding Foam Sealant for Big Gaps up to 3 inches, 12oz Can, Insulating Spray Foam
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Wurth

(8 pack) Würth Expanding Foam Sealant for Big Gaps up to 3 inches, 12oz Can, Insulating Spray Foam

4.5 stars out of 997 reviews
(4.5)|
997 ratings
(8 pack) Würth Expanding Foam Sealant for Big Gaps up to 3 inches, 12oz Can, Insulating Spray Foam8 pack W rth Expanding Foam Sealant Spray Big Gaps 312 pack W rth Expanding Foam Sealant Spray Big Gaps 3W rth Expanding Foam Sealant Spray Big Gaps 34 pack W rth Expanding Foam Sealant Spray Big Gaps 310 pack W rth Expanding Foam Sealant Spray Big Gaps 32 pack W rth Expanding Foam Sealant Spray Big Gaps 3
Pack Size:8 Pack

Key item features

  • Versatile Applications: Suitable for insulation, installation, sound and thermal insulation, sealing, and filling structural voids, engineering holes, and various cracks.
  • Protective Seal: Creates an airtight, water-resistant, and weatherproof barrier, effectively sealing out air, moisture, and pests.
  • Insulation Properties: Offers excellent thermal and acoustic insulation with vibration resistance, and is energy-efficient, performing well in low temperatures.
  • Durable Adhesion: Features self-expanding void filling ability, is moisture-proof and dust-proof, and provides excellent adhesion for a durable, long-lasting seal.
  • Rapid Curing: Becomes tack-free in 10 minutes and can be cut, polished, or painted after 60 minutes.
  • Convenient Size: Each can contains 12 ounces of expanding foam sealant, designed to fill gaps up to 3 inches wide.
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Current price is $32.9734.3 ¢/oz
Price when purchased online
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This item includes:

  • 8-pack of Würth Expanding Foam Sealant for Big Gaps up to 3 inches, 12oz Can, Insulating Spray Foam
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About this item

Product details

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Customer ratings & reviews

4.5 out of 5 stars
stars997 ratings296 reviews
How item rating is calculated
  1. 5 stars73% (727)
  2. 4 stars13% (132)
  3. 3 stars6% (60)
  4. 2 stars2% (22)
  5. 1 star6% (56)

Reviews summary

Pros
  • : Offers good value at this cost.
  • : Fills holes effectively with a strong bond.
  • : Made with excellent craftsmanship.
  • : Fills gaps and small openings.
Neutral
  • : Can be precise, but also prone to messiness.
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Showing 1-3 of 296 reviews

Sep 23, 2025
Norene
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Würth expanding sealant

Purchased this to seal a large plastic bucket that will cover a now exposed outside (and recently repaired) water line and shut-off valve. This will also act mainly as insulation for the water line. I've used 5-6 cans so far but am pleased with the results. Was pretty easy to use.

Helpful?3GNPAH9IWF6G13303407474
Nov 13, 2025
Barbara
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

works well

purchased because they ran out of the blue can ' big gap' foller when i was in the middle of a project. there is a difference but in the end its very minor. the other brand stays where you put it, the brand is a little whimpy/loose, but when it swells up and dries it apprears to be the same

Helpful?3GNPAH9IWF6G13303407474
Nov 11, 2025
PC
Top Reviewer
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

this is a very good price and it's a very good expanding phone for up to 3 in gaps. I have found it useful in many areas and many applications. My last use was up in my attic. my cross braces were allowing the wind to push the exterior plywood which made annoying noises. so I plugged the bottom of the cross braces just enough to hold the spray foam from falling through and then I spray it in and once it's hardened it's a protective barrier which does not allow the plywood to flex with the wind. therefore eliminating annoying wind noise. I'm on an end unit on a condo and it was very annoying. problem solved.

Helpful?3GNPAH9IWF6G13303407474

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