PIR Insulated Plasterboard

What is PIR Insulated Plasterboard?

PIR insulated plasterboard is exactly as it sounds. It is a board of standard drywall plasterboard pre-bonded to a sheet of insulating material. It is often referred to as foam-backed plasterboard or thermal plasterboard (which refers to the thermal properties that the insulation element adds).

To make PIR insulated plasterboard, manufacturers simply bond a sheet of plasterboard to one side of PIR insulation. The result is an all-in-one board of insulation and plasterboard that reduces heat loss and also drylines the wall or ceiling - chef's kiss. 

Where To Install PIR Insulated Plasterboard

Due to its high thermal performance, PIR insulated gypsum board is suitable for use where an enhanced level of thermal insulation is required; between and under rafters and joists, in solid masonry walls, in internal walls and in timber frame builds. 

PIR insulated plasterboard is also suited to: 

• Walls- solid, cavity or timber frame walls
• Room-in-the-roof applications
• Pitched roofs/Cold flat roofs
• Both new build and renovations

What Are The Benefits of Using PIR Plasterboard?

• Zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP)
• Thermal conductivity: 0.022 W/mK
• Suitable for both direct bonding (‘dot and dab’) and mechanically fixed installation techniques
• Features an integral vapour control layer
• Combines insulation & drylining
• BBA certified

Celotex Insulated Plasterboard

Celotex insulated plasterboards are lightweight, rigid, and flaunt an excellent thermal conductivity value of 0.022 W/mk; welcoming a drop in your heating bills and an increase in your home's energy efficiency.

Celotex PL4000 products are comprised of a board of PIR that is bonded to a 12.5mm fire resistant gypsum plasterboard. PL4000 plasterboard has a tapered edge, making the installation process quick and easy. You can install this foam-backed tapered edge plasterboard to the internal side of a masonry wall or under and between rafters and joists. You can either use mechanically fixed installation techniques or the bonding dot and dab method, which involves direct bonding to the masonry wall. These boards are available in overall thicknesses of 37.5mm, 52.5mm, 62.5mm, and 72.5mm.

Ecotherm Insulated Plasterboard

EcoTherm Eco-Liner Insulated Plasterboard follows the same principle as Celotex Insulated Plasterboard, marrying the thermal benefits of PIR with the structural benefits of plasterboard drylining. This easy-to-install thermal solution does a first-class job of upgrading thermal performance in internal wall applications - in both new builds and existing properties.

The 2.4m x 1.2m boards have low global warming potential (GWP) and showcase paper facings, with a thermal conductivity of just 0.022 W/m.K.

PIR Insulated Plasterboard Thicknesses

We refer to all insulated plasterboards by their overall thickness, as this helps you to calculate how much space the board will take up. For instance, Celotex has an insulated plasterboard product called "Celotex PL4025”, where the “25” refers to the fact that the thickness of the insulation board is 25mm. However, this is bonded to a 12.5mm plasterboard, making the overall thickness 37.5mm. We, therefore, call this product “37.5mm Celotex PL4025”.

All of the thicknesses listed on our site refer to the thickness of the insulation plus the plasterboard.

We stock a wide range of insulated plasterboard products from EPS insulated plasterboard (although we recommend extruded polystyrene for thermal insulation) to more specialist products such as fire protection plasterboard, moisture resistant plasterboard and acoustic plasterboard.