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Celotex  |  SKU: PL4025

37.5mm Celotex PL4000 PIR Insulated Plasterboard - 2400mm x 1200mm

£37.58 Ex VAT
£45.10 Inc VAT
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Delivery: £50 ex VAT
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Size: 37.5mm
37.5mm
52.5mm
62.5mm
72.5mm
77.5mm
37.5mm Celotex PL4025 is manufactured from rigid polyisocyanurate (PIR) using a blend of blowing agents that have zero ozone depletion potential (zero ODP) and low global warming potential.
  • 2400mm x 1200mm x 37.5mm.
  • This board allows for the installation of both the insulation and plasterboard in one operation, thereby reducing installation time.
  • Suitable for both direct bonding (‘dot and dab’) and mechanically fixed installation techniques.
  • Maximum flexibility and installation speed due to the tapered edge plasterboard.
  • Reliable long-term energy savings for buildings.
  • Suitable for both new build and refurbishment projects.
  • Can be easily used to upgrade to current building regulation standards.
  • Can be used in pitched roof, flat roof and wall applications.
Thickness: 37.5 mm
Length: 2400 mm
Width: 1200 mm
Coverage: 2.88 m²
R-value: 1.2 m²K/W
Thermal conductivity: 0.022 W/mK
Certification: BA 16/5352 BBA  17/5405
Country Origin: UK


The R-value denotes the resistance to heat flow – the higher the R-value the more insulating the product is.

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  • Size
    2400mm x 1200mm
  • Coverage (m²)
    2.88
  • Thickness
    37.5mm
  • Material
    PIR

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0115 6976 800

What is Insulated Plasterboard?

Insulated plasterboard is a time saving and DIY friendly option for drylining and stud wall construction, comprised of a sheet of general-use plasterboard (such as wallboard) adhered to a sheet if insulating material - ranging from simple polystyrene backing to our high performance, foil-backed PIR insulation.

Sizes of Celotex Plasterboard

All sheets of Celotex PL4000 are created with 12.5mm general purpose plasterboard, but different sizes of Celotex insulation are used to suit a variety of uses. Available in 5 different thicknesses:

25mm, 40mm, 50mm, 60mm, 75mm,

The sheet is laminated to a 12.5mm plasterboard, to create a total thickness that includes the 12.5mm sheet, eg:

25mm Celotex + 12.5mm Plasterboard = 37.5mm Celotex Plasterboard.

Where to Use Celotex Insulated Plasterboard

Celotex insulated plasterboard is designed for use in roof and internal wall applications. It is ideal for loft conversions applied below the rafters - usually in combination with other insulation to help achieve a specific u-value - or below joists in flat roofs.

Size: 37.5mm
37.5mm
52.5mm
62.5mm
72.5mm
77.5mm