Seal and insulate large holes, gaps and joints with this clever expanding foam that will grow to up to 35 times its original volume. Thanks to the genius gun applicator, you can accurately operate this cartridge with one hand. It keeps out sound and heat, so use it to seal around pipes, windows and doors and to help with sound proofing.
This product is very stable once it's set, so it won't shrink or continue to expand. It's HCFC and CFC free, meaning it's kind to the o-zone layer. The product is extremely quick drying (roughly half an hour), and once it's cured, you can cut it, sand it, plaster or paint over it.

• All purpose, fast curing expanding foam filler
• Single handed operation
• Genius gun applicator - accurate, easy to control and easy to use
• Adheres to all common building materials
• Can be cut, sanded, plastered or painted after full cure
• Up to 35 times original volume
• Shrinkage after curing: < 3%
• Expansion after curing: < 1%
• Expansion during curing: 117%
• Temperature resistance: -40°C to +90°C (cured) and to +120°C for up to one hour
• Approx. ½ hour cure time
• Reusable for up to 6 weeks once opened
• Interior and exterior use

Delivery (UK mainland only)

 

Next Day: £5, or FREE over £40

- Order by 9pm Mon-Thu: next working day

- Order Fri to 5pm Sun: Monday

- Order after 5pm Sun: Tuesday

 

Pre-12pm: £10

- Same cut-offs as Next Day above

 

Saturday & Sunday: £10, or £5 over £40, or FREE over £75

- Saturday: order by 6pm Fri

- Sunday: order by 4pm Sat

 

Heavy items (over 30kg)

- Mon-Fri only. Order by 6pm and allow up to two working days

- Order after 6pm Thu: arrives after the weekend

 

Supplier items

- Sent directly by the supplier, so timings vary. Lead times appear on the product page in working days (Mon-Fri)

 

More about delivery 

Next Business Day Collection (eligible items)

- Order by 9pm Mon-Thu: collect next day

- Order after 9pm Thu to 5pm Sun: collect Monday

- Heavy items (over 30kg): allow up to two working days

 

Opening hours

- Weekdays vary by branch: open 6:30am-7am, close 6pm-8pm

- Saturday: 7am-6pm

- Sunday: 9am-4pm

 

Check your local store's hours and that it's open before visiting. Please wait for our text or email before collecting.

 

Holding your order
We'll hold it for 14 days, then automatically refund your original payment method.