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125mm Unilin Xtratherm Thin-R PIR Insulation Board 2400mm x 1200mm

URN: 3001153
£54.74ex. VAT £19.01 per m2
£54.74ex. VAT
£19.01 per m2
Bulk Discount
5+ boards 10+ boards 15+ boards
£54.19ex. VAT £53.65ex. VAT £53.10ex. VAT
Coverage required
m
m
Based on your total area of m2 (inc. 10% wastage) - of these are required (actual coverage of m2)

We recommend purchasing at least 10% extra product to allow for errors, damages or obstacles

Foil-faced 125mm PIR board from the Thin-R range. Delivers strong thermal performance in floors, walls, roofs, and joists, with a CFC-free core and eco-friendly, low-emissivity aluminium facings.

Nationwide Delivery

Fri 15 Aug

Order by 2pm today
  • 5hrs
  • 19mins
  • 39secs

Delivery & Returns Info

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Product Overview

Foil-faced 125mm PIR board from the Thin-R range. Delivers strong thermal performance in floors, walls, roofs, and joists, with a CFC-free core and eco-friendly, low-emissivity aluminium facings.

URN: 3001153
£54.74ex. VAT

Delivery & Returns Information

How Our Delivery Works

We work with a nationwide network of trusted suppliers. As a result, items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you'll see multiple delivery charges at checkout. We always aim to group products from the same supplier to keep delivery costs as low as possible.

Delivery Areas & Charges

Delivery charges listed on our website apply to mainland UK, excluding the following postcode areas: AB, CF, DD, DG, KW, IV, LA, LD, LL, NP, PA, PH, SA, SY
If your delivery address falls within one of these postcode areas, we’ll be in touch before processing your order to confirm any additional delivery costs.
Please note: We do not currently offer delivery outside the UK mainland.

Standard (Nationwide) Delivery

Insulation, Plasterboard and Drylining Products
ORDER VALUE DELIVERY CHARGE
Under £150 £40 ex. VAT
Between £150 - £350 ex. VAT £35 ex. VAT
Over £350 ex. VAT FREE
Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £100 £15 ex. VAT
Between £100 - £200 ex. VAT £10 ex. VAT
Over £200 ex. VAT FREE
Screws & Fixings and Adhesives & Sealants
ORDER VALUE DELIVERY CHARGE
Under £100 £7.50 ex. VAT
Over £100 ex. VAT FREE

Express Delivery

Express Delivery - Insulation and Plasterboard & Drylining
ORDER VALUE DELIVERY CHARGE
Under £400 £50 ex. VAT
Over £400 ex. VAT £35 ex. VAT
Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE DELIVERY CHARGE
Under £300 £50 ex. VAT
Over £300 ex. VAT £35 ex. VAT

View Full Delivery Policy

Returns

We offer a 30 day returns policy on any faulty products.

View Full Returns Policy

Key Features

  • {{home}} Use in floors, framed walls and pitched roofs
  • {{grade}} Aluminium composite facing on both sides
  • {{thermostat}} 0.022 W/mK thermal conductivity
  • {{build}} Easy to handle and install
  • {{public}} Zero Ozone Depletion Potential (ODP)
  • {{verified_user}} BBA certified

Technical Specification

Technical Specification
Material Type:PIR
Thickness:125mm
Width:1200mm
Length:2400mm
Sales Unit:Board
Sales Unit Coverage:2.88m2
Brand:Unilin
Thermal Conductivity:0.022W/mK

What Is Unilin Xtratherm 125mm? 

Xtratherm Thin-R 125mm is a foil-faced rigid PIR insulation board designed for use in a wide range of construction projects. With a low thermal conductivity of 0.022 W/mK, it delivers excellent heat retention and energy efficiency. 

The aluminium facings act as a vapour control layer, helping to prevent condensation and protect building fabric. Suitable for pitched roofs, solid floors, and timber or steel-framed walls. 

The board is lightweight, easy to cut, and offers a good balance between performance, handling, and durability.


125mm Xtratherm PIR Insulation Board Applications

Xtratherm Thin-R Rigid Insulation Board is a versatile solution suitable for use in roofs, walls, floors, and both timber and steel-framed systems. The 100mm boards are easy to cut and can be installed between studwork, laid beneath a screed floor, or fitted between rafters in pitched roofs.

When used correctly, Xtratherm Thin-R XT helps reduce heat loss and improves thermal bridging performance. Installing insulation both above and between roof timbers helps maintain the structure at a temperature closer to the internal environment, reducing the risk of thermal stress and condensation.


Xtratherm PIR Insulation Board Storage & Handling

The polythene wrapping in which the boards are supplied is not considered adequate protection for outside exposure. Care should be taken to protect the insulation in storage and during the build process. We advise that you store the boards indoors on a level surface and under a protective cover.

The insulation boards can be readily cut using a sharp knife or fine-toothed saw.

Xtratherm Insulation Products - All You Need To Know

Xtratherm is one of the largest Irish manufacturers and suppliers of insulation. Xtratherm owns and operates two state-of-art production facilities in the UK and Ireland providing security of supply for a range of insulation products.

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