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GA4000

High performance PIR insulation for floors, walls and roof applications.

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Designed for use throughout your building project, Celotex GA4000 is a versatile, high performance, rigid polyisocyanurate (PIR) insulation board that’s easy to handle and install. Suitable applications include:

As well as being manufactured to current European standards and CE-marked accordingly, Celotex GA4000 is certified by the British Board of Agrément for floors, framed walls and pitched roofs. Made at our original site in Hadleigh or our state-of-the-art facility in Eggborough (opened in 2018), it can provide reliable, long-term energy savings.

How does GA4000 perform?

The entire thickness range offers a low thermal conductivity (lambda value) of 0.022 W/mK, putting GA4000 among the best-performing widely-available insulation materials on the market.

In any of its intended applications, GA4000 will help to provide most of the thermal insulation performance - but the overall heat loss from a building element depends on all of the materials used and the way they’re installed. Use our online and mobile U-value calculators to help you find the most efficient solution for each type of construction.

Benefits of GA4000

Celotex GA4000’s low emissivity aluminium foil facing can help achieve lower U-values when installed facing a clear air space within a construction. Check our frequently asked questions for common queries about positioning and installing products correctly, or contact our technical services team.

Like all Celotex products, GA4000 is a thermal insulation solution that can help to meet energy use and carbon dioxide emissions targets set by national building regulations, including Section 6 of the Scottish Technical Handbooks

  • Board size: 1200 x 2400mm
  • Thickness : 50-100mm
  • Lambda: 0.022 W/mK (thermal conductivity)
  • Facer: Low emissivity composite aluminium foil

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  • Manufactured using a blowing agent with zero ozone depletion potential (ODP) and low global warming potential (GWP).
  • Design and specification support including NBS Plus and BIM objects.