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Celotex GA4075 General Purpose PIR Insulation Board - 2400 X 1200 X 75mm

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£43.46 Incl. VAT
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Celotex GA4075 is a high-performance multi-purpose insulation board that can be utilised in all sorts of applications, such as flat roofs, pitched roofs, solid floors and masonry walls as well as timber framed and steel framed systems. It's equipped with an innovative low emissivity foil facing and manufactured from rigid polyisocyanurate (PIR), so it's convenient and easy to cut and shape. This endlessly versatile insulation board boasts highly impressive thermal conductivity of 0.022 W/m.K for excellent thermal performance. So, it's able to easily meet the target U-value while being thinner than most similar products on the market.

And that's not all! The low emissivity foil facing dramatically improves thermal performance in sealed cavity air spaces, helping raise the potential U-value even further. The GA4075 is manufactured to the highest industry standards and approved by the BBA (British Board of Agrement) as fit for use in defined roof, wall and floor applications when installed, used and maintained as outlined in the certificate. In addition, the GA4075 comes with a BRE (Building Research Establishment) Green Guide Rating of A, which will help your environmental performance and provide reliable long-term energy savings for your home.

Features & Benefits: Celotex GA4075 General Purpose PIR Insulation Board - 2400 X 1200 X 75mm

  • High-quality PIR insulation board
  • Excellent thermal performance & reduced thickness
  • Lightweight, handy, quick & easy to install
  • Suitable for floor, roof and wall applications
  • Low emissivity foil facings for improved thermal insulation performance in cavity air spaces
  • BRE Green Guide Rating of A for sustainability
  • BBA certified
  • Compressive strength (kPa): CS(10\Y)140
  • R-Value: 3.40m2K/W
  • Maximum weight: 2.78kg/m2

Standards & Certification

  • Thermal conductivity: 0.022W/m.K, 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 75mm Width 1200mm


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

Questions & Answers


Can this product be put on a concrete floor and laminate flooring be placed on it


It can be used in flooring applications but you'd still need to level the surface and and have an intermediate layer of timber before the flooring can go on it. 

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5 / 5 15 reviews
25th April
Easy to cut and fix
Mr Freer
12th April
good stuff and easy to work with
24th March
Perfect for converting my old shed into a decent draft proof workshop!
Mark Bagley
6th November 2021
Absolutely fantastic insulating gear celotex brilliant
Kenwyn Rees
6th July 2021
Hopefully it does the job but will have to wait until winter!
Mrs C Blyth-Cook
5th November 2020
The company have been amazing when needing a refund. Recommend, excellent customer care
Keith Simpson
1st November 2020
1st class product.
Mr Stephen Menhinick
10th October 2020
Fine insulation board, good value.
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Celotex GA4075 General Purpose PIR Insulation Board - 2400 X 1200 X 75mm

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