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PIR Insulation Board

PIR insulation board, also known as Polyisocyanurate, performs as great thermal insulation. A variety of sizes are available online.

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  • Celotex XR4125 PIR Insulation Board 1200 x 2400 x 125mm Celotex XR4125 PIR Insulation Board 1200 x 2400 x 125mm

    Celotex XR4125 PIR Insulation Board 1200 x 2400 x 125mm

    Celotex XR4125 is a rigid polyisocyanurate (PIR) insulation board that is high preforming, it offers excellent thermal performance with a thermal conductivity of 0.022 W/m.K. With a low emissivity foil facing it can also offer enhanced thermal...
  • Ecotherm Eco Versal PIR Insulation Board 2400 x 1200 x 35mm

    Ecotherm Eco Versal PIR Insulation Board 2400 x 1200 x 35mm

    EcoTherm Eco-Liner dry lining insulation board is fibre free and enables internal wall insulation in one easy application without impacting on the interior space. EcoTherm Eco-Liner is perfect for insulating from the inside which upgrades the thermal...
  • Ecotherm Eco Liner PIR Dry Lining Insulation Board 2400 x 1200 x 52.5mm Ecotherm Eco Liner PIR Dry Lining Insulation Board 2400 x 1200 x 52.5mm

    Ecotherm Eco Liner PIR Dry Lining Insulation Board 2400 x 1200 x 52.5mm

    Eco Liner is a 2-in-1 plasterboard which can be fitted either mechanically or using the dot and dab process. It has many applications and can be used for cavity, solid and timber internal walls. It can also be used on flat and pitched roofs and in loft...
  • Ecotherm Eco Cavity PIR Insulation Board Tongue & Grooved 1200 x 450 x 50mm

    Ecotherm Eco Cavity PIR Insulation Board Tongue & Grooved 1200 x 450 x 50mm

    Eco-Cavity is rigid polyisocyanurate foam with aluminium foil composite on both sides. It is a high performance insulation used as a full cavity fill within traditionally built masonry walls. It is conveniently sized so that the boards co-ordinate with...
  • Celotex PIR Insulation Board Celotex PIR Insulation Board

    Celotex PIR Insulation Board

    £20.59 - £150.21 (Ex VAT)
    £24.71 - £180.25 (Inc VAT)
    Celotex XR4110 is a high performance rigid polyisocyanurate (PIR) insulation board that is extremely lightweight making it very easy to handle, transport and extremely easy to install due to its rigid nature. Being a high performance PIR insulation...
  • Celotex Thermal PIR Insulation Board Celotex Thermal PIR Insulation Board

    Celotex Thermal PIR Insulation Board

    £54.68 - £70.89 (Ex VAT)
    £65.62 - £85.07 (Inc VAT)
    Celotex PL4000 range is an easy to install rigid polyisocyanurate (PIR) insulation board with a paper facing, laminated to a sheet of 12.5mm plasterboard with a tapered edge. This combination board of plasterboard and insulation saves time and hassle on...
  • Celotex PIR Cavity Wall Insulation Celotex PIR Cavity Wall Insulation

    Celotex PIR Cavity Wall Insulation

    £6.80 - £16.01 (Ex VAT)
    £8.16 - £19.21 (Inc VAT)
    The Celotex CW4000 range are high performance insulation boards for Cavity Walls. It features low emissivity foil facings giving improved thermal insulation performance within cavity air spaces, when compared to typical PIR products. This PIR insulation...

PIR Insulation Board

What are PIR Boards?

PIR stands for Polyisocyanurate and it is a rigid form of thermal insulation that is manufactured from plastic to create a foam.

PIR was introduced to the market in the 1960s, as an advanced replacement to PUR (Polyurethane) Boards.

PIR Insulation is suitable for use in a wide range of applications:

  • Walls – Ecoliner products are suitable for insulating and drylining internal walls, whilst Eco-Versal offers timber frame walls thermal insulation with both faces including aluminium foil. As the name suggests, the Eco Cavity is used in Cavity/Masonry Walls and are designed to work with the typical dimensions of brick and block.
  • Flooring – Suitable for most types of flooring including timber, solid and concrete, as well as suspended flooring, it is crucial to ensure that floors are fully insulated to tackle the problem of heat rising.
  • Lofts – Loft spaces are a void that is the most common cause for heat loss, so choosing a good form of insulation such as PUR or PIR will help to save you money, whilst ensuring that your home is energy efficient.
  • Eco-Versal is a popular choice of PIR insulation because it is effective at insulating a wide range of areas of your home including pitched roofing, walls, loft ceiling, and floors.

How to guides


What is the Green Homes Grant?

The £2 billion grant aims to encourage homeowners to make their homes more energy efficient, benefitting the environment as well as protecting and creating jobs.


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