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Soudal Expanding Foam B3 Hand Held 750ml

4.7 (703 reviews)
SKU: 240304163954004 EAN: 5411183078956

Compare 2 prices for Soudal Expanding Foam B3 Hand Held 750ml — from £5.99 to £9.00 across 2 UK sellers including I T S, B & Q. Save up to £3.01 (33%).

£5.99 2h ago
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Compare Prices from 2 Sellers

Prices updated 19 Apr 2026
2
B & Q
£9.00 +£3.01
2h
#2 B & Q
2h ago
£9.00 +£3.01
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If you’ve got a gap to fill, this handheld expanding foam from Soudal will get the job done. It’s perfect for the general filling and insulating of holes, voids, gaps and joints in most common construction tasks. You can use it around window and door frames too, as well as insulating around pipes or electrical wiring.\nThis self-expanding PU foam comes ready to use in a 750ml aerosol can, so it’s very easy to apply. As well as a high filling capacity, it offers excellent sound and heat insulation along with resistance to water, heat and ageing. \n• Perfect for general purpose gap-filling tasks \n• High thermal and acoustic insulation\n• Can be cut, sanded, plastered and painted when cured\n• High gap-filling capacity\n• Good adhesion on all surfaces (except PE, PP and PTFE)\n• Suitable for internal and external use\n• Not UV-resistant
Brand Soudal
MPN 116744
No features listed
No items listed

Customer Reviews 703

4.7
703 reviews
5 star
562
4 star
101
3 star
22
2 star
9
1 star
9
Void filling
5.0
February 21, 2026
Iron Brian Verified Purchase

Filling a void on a dab and board wall has massively warmed a cold room

Spot on
5.0
February 20, 2026
Glen s c Verified Purchase

Did what it said it would filled all the gaps and some

Soudal expanding foam
5.0
February 19, 2026
BigEvs Verified Purchase

Great product, reasonably priced. Purchased to fill a gap around a boiler flue.

Good product
4.0
February 18, 2026
CaptA Verified Purchase

Good product but it is messy and does not stick well on vertical panels but great for filling small gaps

No Drafts Now
5.0
February 15, 2026
Lambrettaman Verified Purchase

Does what it says on the tin and remember to wear the gloves provided and old clothes

Conservatory fixed
5.0
February 10, 2026
Paul Connie Verified Purchase

Works as it says filled a void within my conservatory

Soudal Expanding Foam
5.0
January 31, 2026
Peterw15 Verified Purchase

Sorry returned unused as builder did use and I have no use for it at this time

sealing a draft around a pannel where the walls were very uneven
4.0
January 27, 2026
Big Mack Verified Purchase

used to seal up some drafts -easy to apply but a bit messy but due to being in an awkward place sticks well and does the job small quantity and reasonable price ideal for smaller job

Easy
5.0
January 18, 2026
Nkerem Verified Purchase

Easy to work with.. keeps expanding even when you thought that was it..

Great expanding foam
5.0
December 27, 2025
Jag Gill Verified Purchase

Excellent spread, good coverage, doesn't shrink like other makes

soudal expanding foam
5.0
December 6, 2025
Mr Raj Kumar Verified Purchase

It was excellent product at a very reasonable price.

It's good
4.0
December 3, 2025
Antoinette Verified Purchase

It's really good at expanding 👍 and filling gaps.

Expanding foam
5.0
November 29, 2025
Steve78129 Verified Purchase

Worked as I needed on the job I had. Easy to use and does what I wanted

Good expansion
4.0
November 12, 2025
GeoffB12345 Verified Purchase

Operating the nozzle whilst it’s essentially upside down is not easy but, the product works well and expands a lot further than I expected.

Easy to use
5.0
November 9, 2025
Shaky1 Verified Purchase

Great product, simple to use, does the job thanks.

Foamy, expandy, sticky stuff.
5.0
October 31, 2025
Not a bricky Verified Purchase

It’s expanding foam; comes out the tube all foamy, expands loads (and loads), sets all hard and sticks to anything and everything within 20 yards. Wear gloves, use sparingly, it will quadruple in size!

Gap filler
4.0
October 27, 2025
09c68d64-ccb1-5ac1-967a-ad7c7c7a7971 Verified Purchase

Filled large gap between window frame and masonry, before finishing with silicone.
Soft squashable tube allows squirting product through narrow gaps. When dry, applicator tube and nozzle clean fairly easily by pushing foam through. Dry product was a bit soft and crumbly - didn't cut nicely with blade. Experience probably helps knowing how much to use, sometimes too much and foam spews out, sometimes not enough.
Would use again because there isn't really any alternative. Always wear gloves and old clothes!
Four stars because its horrid stuff to use...

Wondow handle
4.0
October 21, 2025
gpdproperty Verified Purchase

I was waiitng for 1 week for the Text message to say that my Wondow handle had arrived I had to phone up Toolstation over 1 week later and visit the shop

Quick and easy
5.0
October 15, 2025
Steve Ormerod Verified Purchase

Quick and easy and simple, exactly what was needed

Good Foam
5.0
October 8, 2025
212b8614-ff79-5abd-9f31-d55c985e267d Verified Purchase

Good expanding foam, bottle needs to be upside down to operate, to you will need 500mm clearance above the nozzle. I used a tube to squirt the foam where I needed which was in to a ceiling.

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