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Celotex GA4000 Insulation Board - 1200 x 2400mm

  • Can be applied in various areas making it a very versatile product
  • High-Performance fibre freeboard for excellent low thermal conductivity
  • Various thicknesses available
  • Board size - 1200 x 2400mm


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Product Information

Celotex GA4000 Insulation Board - 1200 x 2400mm

A general purpose board which can be used for floor, walls and roofs. Celotex GA4000 Insulation Board is specified by building control as the number one choice for housebuilders. Celotex GA4000 Insulation Board comes is also known as PIR insulation board.

A very popular board for a number of projects such as ground floors (even when underfloor heating is used), pitched roofs, flat roofs, timber and steel-framed walls and it's very popular for refurbishment projects

Celotex GA4000 Insulation Board is easy to handle and install.  It is British Board of Agreement certified for floors, walls and pitched roofs, it is also CE marked. It has a polyisocyanurate rigid foam core with low emissivity aluminium facings.  Manufactured at Celotex new plant in the UK, to the highest standards and in accordance with the quality control standard ISO 9001 and the environmental standard ISO 14001, Celotex GA4000 insulation board is a reliable insulation board with long term savings benefits.

GA4000 is one of the best performing insulation boards widely available, with low thermal conductivity of 0.022 W/mK (lambda value). When used with the low emissivity aluminium foil side facing a clear space Celotex GA4000 Insulation Board can help get lower U-values.

Celotex is one of the leading manufacturers of insulation PIR boards in the UK. Building Supplies Online low trade prices are available to trade and consumer customers, making our Celotex GA4000 Insulation Board the cheapest online.  When fitted correctly Celotex GA4000 Insulation Board can help you make savings on your heating and electricity bills due to it's high insulation qualities.


  • Is suitable for use in a number of applications including roof, wall and floor systems 
  • Is specifically designed to eliminate thermal bridges 
  • Is certified under BBA certificate numbers 17/5405, 16/5352 
  • Includes low emissivity foil facings giving improved thermal insulation performance within cavity air spaces 
  • Can be used to improve reliable long-term energy savings for buildings

Technical Specifications

  • Board size: 1200 x 2400mm
  • Thickness: 50mm - 100mm
  • Lambda: 0.022 W/mK 
  • Applications: Pitched Roofs, Flat Roofs, Solid Masonry Walls, Timber Framed & Steel Framed Systems, Floors


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Product Brand Celotex
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