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40mm Celotex TB4040 PIR Insulation Board 2400x1200mm

£15.97 (ex. VAT)
Insulation Board ideal for thermal bridging
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40mm Celotex TB4040, formerly TB3040 Insulation Board 2400x1200mm Celotex TB3040 40mm is a high performance PIR insulation is ideal for overcoming thermal bridging and for use in two layer build-ups, including between and under rafters and over stud in timber frame wall lining applications. This is also the ideal product type to use as perimeter up-stands in concrete floor constructions.

This multi-purpose PIR Insulation board is one of our biggest selling products due to is diversity in application and it also achieves an A+ rating when compared to the BRE Green Guide.

The General application range of Celotex products are split in to three size categories
TB3000  12mm - 40mm
GA4000  50mm - 100mm
XR4000  120mm - 200mm

These are all essentially the same product but with varying thicknesses of Insulation Board.
Celotex Insulation boards are made from a expanded Polyisocyanurate (PIR) insulation foam with a foil facing to both sides.


Length: 2.4m.

Width: 1.2m.
Coverage: 2.88m2.
Thickness: 40mm.
rValue: 1.80m2K/W.
Weight: 1.26kg/m2.
Thermal conductivity: 0.022 W/mk - BS EN 12667.
Compressive strength: ≥120kPa - BS EN 826.
Water vapour resistance: >150MNs/g - BS EN 12086: Method B.
Spread of flame: Class 1 - BS 476-7

Lambda Value = 0.022
Thickness = 40mm

Please note : Due to recent national shortages of PIR insulation, We now offer Celotex, Ecotherm, Recticel and Iko to help to offer a speedy delivery. You may be offered an alternative brand due to local stock availability.

Please feel free to contact us for a data sheet or any further application information

Product Type:
PIR Insulation Board
Edit Product Type:
PIR Insulation Board
40x1200x2400MM (2.88 M²)
General Application
3-5 Days
Product Code: