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Soudal B2 Fire Rated Expanding Foam Hand Held 750ml

4.6 (126 reviews)
SKU: 240609120710004 EAN: 5411183131224

Compare 1 price for Soudal B2 Fire Rated Expanding Foam Hand Held 750ml — from £8.85 across 1 UK seller including Toolstation.

£8.85 7h ago
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B2 Fire Rated Expanding Foam works a treat for installing frames, filling cavities and for use in passive fire protection systems where DIN 4102 B2 fire class is required. This filler also delivers great thermal and acoustic insulation when used around doors and window frames. It''s just as adept at this job in the bones of a house, helping to regulate temperatures when used with roofing materials and insulation boards.\nThis expanding foam is fast curing, with a cutting time of just 30 minutes. Soudal’s foam provides an excellent yield as the foam expands to 30 times its original volume. There''s no need for a primer as this filler has excellent adhesion on most construction materials without additional preparation.\n• Expands to 30 times the initial volume\n• Rapid curing with good thermal and acoustic insulation properties\n• Fire class DIN 4102 B2\n• Fire resistance up to 2 hours depending on joint configuration\n• Acoustic rating: 58 dB\n• Insulation factor: 36mW/mK\n• Excellent yield and adhesion on most substrates\n• Interior and exterior use\n• Store in cool and dry conditions between +5°C and +25°C\n• EN 1366-4\n• Ideal for filling around door and window frames and pipe penetrations where DIN 4102 B2 fire class is required
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Customer Reviews 126

4.6
126 reviews
5 star
86
4 star
29
3 star
8
2 star
1
1 star
2
Mind the gap
4.0
January 14, 2026
V8Tommy Verified Purchase

I used this to fill a gap in a high heat area. When i applied it, it expanded and filled the gap. So i suppose it worked well. Can i have £100 now? …. Please.

1 found this helpful
Proper job!!
5.0
December 27, 2025
Paris Michaelides Verified Purchase

Plenty of material to work with, I left it overnight to cure and then it was easy to shape

Soundal B2 Fire rates expanding foam
5.0
December 27, 2025
8b1e28bd-1a5e-5651-8130-58539c400acb Verified Purchase

Good product that was reasonibly priced. It worked well and was easy to use.

Everywhere
4.0
December 20, 2025
Totowolf Verified Purchase

Did the job very expandable , use less than you think as it’s like Digby !!

Does what is says on the can.
5.0
November 13, 2025
Ms Lewis Verified Purchase

Does what is says on the can (I hope as I haven’t had a fire).

Forget it and buy something else.
1.0
November 4, 2025
42c91edf-2be3-59a8-8cd2-50efdb0cbf63 Verified Purchase

I have never used such awful expanding foam, or should i say never expanding foam. It simply slid out of the small gap and just laid on the window sill. None of it expanded whatsoever. Total waste of time, mess and money.

foaming
5.0
October 18, 2025
5158e537-68c0-5a4d-b9b9-979cf82d4917 Verified Purchase

Quick processing; usage and do use the appropriate personal protection!

Quality Product
5.0
October 11, 2025
Tony M1966 Verified Purchase

Works really well, great coverage without the mess of some other brands. Worth paying a little bit more !!!

Expanding Foam Insulation-Wonder Stuff
5.0
October 7, 2025
Pete the bodgerer Verified Purchase

Wanted something to stop the draughts through the void over a sealed ceiling and a fibreglass roof on my extention.There are fitted ceiling spotlights and the winter winds really rattled through them meaning extra heating required for winter use.Drilled 6 holes about 18 inches apart along the window wall and just fired the nozzle up each hole for 3/4 seconds -a bit of guesswork as you cant see how much expansion there was but tested for the same time scale on a piece of plastic sheeting.End result even with hurricane Amy roaring across the levels NO draughts whatsoever and it felt 10 degrees warmer so hoping to get my cost back in saved lecky bills

Does the job if you don't mind the mess
4.0
October 5, 2025
Paraman80 Verified Purchase

Not the most pleasant job reinsulating a hot water cylinder with this stuff. Hard to get it to stick onto a vertical surfice. Had to use flexible floor tiles stuck on to provide a pouch to squirt into. this workes and the solution solidified nicely over 2 hours or so. Supplied gloves were soon too sticky to use!

Perfect for my needs
5.0
September 16, 2025
Jens Pilgrim Verified Purchase

Good product does the job and will buy mote when project goes on

Great expander foam. Expands well and goes a long way
5.0
September 12, 2025
Jim Forsyth Verified Purchase

Fantastic expander foam. Goes a long way. Follow instructions

Quality at affordable price.
5.0
August 23, 2025
Naresh 2025 Verified Purchase

it works well as it says on Tin. Appear to be non toxic, but please use trade heath and safety precaution.
Job well done. i will sure buy again when needed.

Expanded and set well
5.0
April 22, 2025
Jimbo0077 Verified Purchase

Winner. Used in boxed in pipes slowing cooking smells from kitchen venting into the bathroom.

Expanding foam
3.0
March 8, 2025
Self Employed Electrician Verified Purchase

Well it is foam that expands after pressing a nozzle and directing it to where you want it... Seems to work as per the description.. However I've never really understood what info is expected to be returned with these reviews, and So many products offering specific characteristics..

Great fire rated expanding foam.
5.0
February 5, 2025
HedgeTrimmerStu Verified Purchase

Excellent product. Needed to fill a gap around an oil boiler outlet, followed the instructions on the can and filled the gap. The foam had formed a skin in an hour or so, trimmed off the excess after 24 hours.

Took back very rude staff member replaced in the end.
2.0
January 25, 2025
Batman2 Verified Purchase

Item stopped working took back very rude staff member replaced

Did exactly what you would expect. I dont think I need to “expand” on that!
5.0
January 22, 2025
LP90 Verified Purchase

Does exactly what it says it will do. Foam which expands. Set fairly quickly, and then solid by the next morning.

Fire retardant filler
5.0
January 15, 2025
PG55 Verified Purchase

Good stuff. Does exactly what it’s supposed to. Just be careful not to get it anywhere you didn’t intend.

Easy application without mess
5.0
January 10, 2025
Simonjaybee Verified Purchase

Easy to apply and expands well. Would recommend and use again

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