Fill, seal and insulate with confidence - Soudal Expanding Foam is the trusted choice for builders, tradespeople and DIYers.

This one-component polyurethane foam expands to fill and seal gaps, joints and cavities quickly and securely. The B3-rated formula provides reliable insulation against heat, sound and moisture, making it ideal for everyday construction and repair jobs.

Use Soudal Expanding Foam to fix and insulate door and window frames, fill openings in roof structures, or seal around pipes, conduits and electrical cables. Once cured, it can be easily cut, sanded, plastered or painted for a smooth, professional finish.

Packed in a 750 ml handheld can, this self-expanding PU foam is ready to use straight from the tin - no applicator gun needed. It delivers high yield, excellent adhesion and long-lasting resistance to water, heat and ageing.

• Multi-purpose use - perfect for filling and insulating holes, gaps, joints and cavities
• High-performance brand - trusted Soudal expanding foam formulation for professional results
• Thermal & acoustic insulation - reduces heat loss and noise transmission
• No shrinkage or post-expansion - stable once cured
• Easy to finish - can be cut, sanded and painted
• Handheld convenience - 750 ml can for quick, precise application
• Interior & exterior use - adheres to most building materials (except PE, PP and PTFE)

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.