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Celotex GA4050 50mm PIR Insulation Board - 2.4m x 1.2m

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£29.38 Incl. VAT
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Celotex GA4050 is a multi-purpose insulation board which is suitable for use in a variety of applications such as pitched roofs, flat roofs, solid masonry walls, floors and timber framed and steel framed systems. Equipped with low emissivity foil facing, it's manufactured from rigid polyisocyanurate (PIR) and easy to cut and shape. Thanks to the excellent thermal performance, as demonstrated by a thermal conductivity of 0.022 W/m.K, this insulation board is able to hit the target U-value with reduced thickness.

What's more, the low emissivity foil facing provides improved thermal performance in sealed cavity air spaces, improving the potential U-value. The GA4050 has been certified by the BBA (British Board of Agrement) as fit for use in defined roof, wall and floor applications when installed, used and maintained as set out in the certificate, giving you peace of mind. Additionally, it has earnt a BRE (Building Research Establishment) Green Guide Rating of A, which can help your environmental performance in your BREEAM (Building Research Establishment's Environmental Assessment Method assessments, making it a valuable asset.

Features & Benefits: Celotex GA4050 50mm PIR Insulation Board - 2.4m x 1.2m

  • High-quality PIR insulation board
  • Excellent thermal performance & reduced thickness
  • Low emissivity foil facings for improved thermal insulation performance in cavity air spaces
  • Can be used in floor, roof and wall applications
  • Lightweight, rigid and easy to install
  • BBA certified
  • BRE Green Guide Rating of A for sustainability
  • R-Value: 2.25m2K/W
  • Maximum weight: 1.92kg/m2
  • Compressive strength (kPa): CS(10\Y)140

Standards & Certification

  • Thermal conductivity: 0.022W/mK, according to BS EN 13165 for factory made rigid polyurethane foam (PU) product
  • Spread of flame: Euroclass E Reaction to Fire classification, according to BS EN 13501-1. Products with this level of classification are not provided with a rating for smoke emission.


Length 2400mm Thickness 50mm Width 1200mm


Material PIR Product Type Board Facing Foil Thermal Conductivity 0.022 W/mK
Edging Square Edge

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5 / 5 6 reviews
7th February
Does what it says on the box. This was offered as an alternative to Celotex.
Mr Low
21st June 2021
Good but expensive
Nigel Swain
25th October 2020
Excellent service i will be ordering some more
Bev Smith
3rd September 2020
Lightweight, easy to cut and install. Wear a mask though. Good value compared to other brands.
Phillip Stevens
28th March 2020
Great price and service
Thomas Bosworth
12th November 2019
Competitive price
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Celotex GA4050 50mm PIR Insulation Board - 2.4m x 1.2m

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