Sopratherm Thermal Laminate Insulation Board PL4025 2400mm x 1200mm x 25mm 12.5mm PIR (37.5mm overall)

Insulate solid walls and roofs in a single operation with the Sopratherm PL4025 thermal laminate insulation board, supplied in a 2400 x 1200mm size with a 37.5mm overall thickness (25mm PIR bonded to 12.5mm plasterboard). This multi-purpose, high-performance board is engineered from rigid polyisocyanurate (PIR) foam bonded directly to tapered edge plasterboard, providing 2.88m2 of coverage per sheet.

Offering a thermal conductivity of 0.022 W/m.K, the board delivers reliable thermal resistance while featuring zero ozone depletion and a low global warming impact. The integrated plasterboard face is defined as Class O in accordance with building regulations, ensuring a safe, ready-to-finish surface for internal rooms.

BBA and OFGEM approved, this versatile laminate board is suitable for pitched roof, flat roof, and solid wall applications. It can be installed using both direct bonding "dot and dab" adhesive and mechanically fixed installation techniques.

• 37.5mm overall thickness – combines 25mm PIR foam with 12.5mm tapered edge plasterboard
• 0.022 W/m.K thermal conductivity – delivers high thermal resistance for solid wall insulation
• 2-in-1 installation – installs both insulation and plasterboard simultaneously to save labor time
• Versatile fixing methods – suitable for direct bonding "dot and dab" or mechanical fixing
• Class O plasterboard face – meets strict building regulations for internal surface fire safety
• BBA and OFGEM approved – certified performance for pitched roofs, flat roofs, and walls
• Available in various sizes – including 52.5mm, 62.5mm, 72.5mm, and 77.5mm overall thicknesses

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.