Login Register

Soudal Genius Gun Gap Filling Expanding Foam 750ml

4.7 (539 reviews)
SKU: 240609120510004 EAN: 5411183109353

Compare 5 prices for Soudal Genius Gun Gap Filling Expanding Foam 750ml — from £7.69 to £12.26 across 5 UK sellers including Screwfix, Toolstation, B & Q and more. Save up to £4.57 (37%).

£7.69 21h ago
View

Compare Prices from 5 Sellers

Prices updated 12 Apr 2026
2
Toolstation
£7.98 +£0.29
20h
3
B & Q
£8.75 +£1.06
25h
4
Travis Perkins
£9.77 +£2.08
16h
5
Jewson
£12.26 +£4.57
42h
#2 Toolstation
20h ago
£7.98 +£0.29
View
#3 B & Q
25h ago
£8.75 +£1.06
View
#4 Travis Perkins
16h ago
£9.77 +£2.08
View
#5 Jewson
42h ago
£12.26 +£4.57
View
• Single handed operation • Genius gun applicator • Adheres to all common building materials • Can be cut, sanded, plastered and painted after full cure • Reusable for up to 6 weeks • Interior and exterior use All purpose, fast curing expanding foam filler with Genius Gun applicator for accurate trigger control and one-handed application. Adheres to all common building materials. Can be cut, sanded, plastered and painted after full cure.
No specifications available
No features listed
No items listed

Customer Reviews 539

4.7
539 reviews
5 star
440
4 star
74
3 star
11
2 star
8
1 star
6
Nice foam!
5.0
February 27, 2026
MattM81 Verified Purchase

Fantastic and nice foam but very sticky so wear gloves and protect surfaces

Foam filler
5.0
February 23, 2026
Digger dave2 Verified Purchase

I've used this before, great stuff although price has shot up everywhere.

Ideal for professional or DIY use
5.0
February 22, 2026
Mr Pot Verified Purchase

It is easy to use with its specially designed can. The foam expands dramatically so it goes a long way. Any foam left in the can has a long shelf life - I have used it again successfully after more than a year.

standard foam
4.0
February 20, 2026
SiGuy Verified Purchase

standard foam ,does what it says on the tin,haven't tried re-using it yet,so we'll see when i come to finish off the can.

Works well, but not reusable.
2.0
February 14, 2026
Cheshire Pete Verified Purchase

Worked well, but not reusable, pretty much wasted 2/3rds of the can.

Soudal Expanding foam
5.0
February 11, 2026
Ken moss Verified Purchase

Excellent expanding foam. Large can with trigger lock, bung and gloves. Easy to use, eady to clean after and keeps fresh ready for the next job.

Does the job well
4.0
February 6, 2026
Sailor12 Verified Purchase

Good product. Recommended as the right product for the work

Precision Seal, Total Peace of Mind – Mice Won’t Stand a Chance!
5.0
February 5, 2026
Veteran Yankee Verified Purchase

I recently used the Soudal Genius expanding foam under kitchen units to seal mice entry points, around cables, and pipes, and it was a brilliant solution. The precision nozzle made it easy to target deep, hard-to-reach gaps with full control, and the foam expanded perfectly to create a solid, airtight seal. It’s dense, adheres well, and cured quickly, allowing me to trim off excess, neatly, as I got a little carried away.

This is top-tier expanding foam, clean, reliable, and highly effective. The reusable gun is a game changer, reducing waste and making second applications effortless. So I can use the remainder of the can, at a later date.

Verdict: This is an excellent product that does exactly what it promises. The mice won’t agree! I definitely won’t be using anything else in the future. Highly recommended!

filler
5.0
February 4, 2026
scratter Verified Purchase

Excellent product found it really easy to use and control was good

Filling a hole
5.0
February 4, 2026
30048fc6-1d8b-5c4a-8f34-7a828e4b1e6c Verified Purchase

I had reason to remove the side of my mobility bath and found that when company that had installed it they made a hole bigger than was necessary and it let in a considerable draft because of it. There was not a lot of room to work in so I opted to use expanding foam and it has solved the problem so very pleased that this was the right move GREAT

Fast hassle free service
5.0
January 31, 2026
Rory Grant Verified Purchase

Great product selection and great service. Always very quick and hassle free each time to buy any products from Toolstation. Very good company to deal with.

Poor discharge nozzle
2.0
January 24, 2026
Javo Verified Purchase

Clogged nozzle within minute s rendering canister useless

Great expandable foam
5.0
January 21, 2026
Gabrielavend Verified Purchase

Easy to follow the instructions and easy to use. Comes with a cap to now allow content of the tube dry out.

Great product
5.0
January 21, 2026
MJBS Verified Purchase

This was the best disposable foam I've used. Unlike others, I've used, this was reusable a number of times, over a few days, without the tube clogging up. It also cut very easily when set.

If you don't use foam enough to need a gun then this is the one to go for
5.0
January 1, 2026
_Tim_ Verified Purchase

A good choice of expanding foam with the trigger cap on the can giving better control and being very close in price to other cans that don't have this feature. As long as you ensure the tube is cleared out after use you can leave the can for a few weeks and still use the remaining contents.

Expanding foam
4.0
December 18, 2025
Dave1001why Verified Purchase

Very good expanding to fill gap. Clean to remove once set on upvc where I used it. Know they do a smaller one at 500ml but for the home diyer could do with an even smaller one otherwise there is a lot of waste not using whole can.

Foam filler
5.0
December 17, 2025
Christopher Hale Verified Purchase

good product as described on the tube filled gap and worked well

It's a skoosh
5.0
December 11, 2025
Kozmik Verified Purchase

Great for filling gaps. Used to seal between batons and a rough wall to insulate a basement conversion. Easy to cut once cured. Wear gloves.

Expanding foam
4.0
December 11, 2025
8ee0f874-a843-59ab-bb53-874f37ba4151 Verified Purchase

Good easy to use product
Does exactly as I wanted
Careful of pressing too long as the foam expands a lot

Excellent stuff
5.0
December 10, 2025
c276ac8b-3c0d-52aa-8e6e-fd9c9114bb91 Verified Purchase

First time using this, so had zero experience with product, but it turned out very well. Despite reading the blurb, I underestimated how much it would expand so ended up using more than was needed, but after letting it go off, I trimmed it back using multitool & blade, which resulted in a great job. Very easy to use (the can needs to be upside down, point pipe where you want the foam, and *slowly* squeeze trigger for a more controlled flow), great features (trigger, pipe clip, re-useable); Good price and service as always from Toolstation. Yes, I'd recommend this product.

200,000+ Products
220+ Trusted Sellers
183,000+ Price Points
72hr Price Updates

Featured Brands

All Brands