Sopratherm PIR Insulation Board TB4000 2400 x 1200 x 25mm

Target thermal bridging and detail areas with the Sopratherm TB4000 PIR insulation board, supplied in a thin 2400 x 1200 x 25mm size. This high-performance rigid foam board offers excellent thermal performance with a conductivity of 0.022 W/m.K, helping to reduce the thickness of insulation needed to hit target U-values.

Equipped with low emissivity foil facings, the board improves thermal performance within sealed cavity air spaces. Soprema boards are engineered to be light and rigid, assisting with ease of transportation, site handling, and clean cutting.

Ideal for overcoming thermal bridging in construction detailing, this thin 25mm board is suitable for use in a number of applications including roof, wall, and floor systems. It has been assessed by the BBA as fit for use in defined building applications when installed according to certification guidelines.

• 2400 x 1200 x 25mm slim dimensions – designed specifically for detailing and overcoming thermal bridges
• 0.022 W/m.K thermal conductivity – delivers high thermal resistance in a compact profile
• Low emissivity foil facing – enhances heat retention inside sealed cavity air spaces
• Light and rigid build – simplifies manual handling, transporting, and fitting on site
• Versatile application – suitable for use across defined roof, wall, and floor systems
• BBA assessed – verified fit for use in certified construction structures
• Available in various thicknesses – including 20mm, 30mm, and 40mm

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.