Collection: Celotex Insulation

Celotex insulation is the leading manufacturer multi-purpose insulation boards that provides solutions for cold spots in walls, floors, roofs, cavities and many more areas. These cold spots are usually created by a lack of insulation, leading to dampness and condensation. This is where Celotex insulation comes in.

We stock popular Celotex insulation ranges, including GA4000, TB4000, XR4000, PL4000 and CW4000, and can help you find the wall insulation, floor insulation, roof insulation or cavity insulation that you require. 

We offer Celotex insulation boards that can cover between 2.88m² and 25.92m², with thicknesses between 12mm and 200mm so you’re sure to find the right product for your application. These boards are cost-effective, lightweight, strong and easy to install, making them a popular insulation choice.

Celotex insulation is manufactured from tough polyisocyanurate (PIR), using a perfect mix of certain blowing agents, which acquires zero Ozone Depletion Potential (zero ODP) and a low global warming impact. This makes it great for the environment, as well as for your heating and cooling costs, as it has a thermal conductivity of 0.022W/mK. 

Celotex has achieved an A+ rating when it is compared to the BRE Green Guide and has certification from BBA. The Celotex insulation boards also have a good reaction to fire when measured in accordance with new European standards. It achieves the required U-values and will help you to meet current and future Building Regulations.

All Celotex products are readily available from Insulation4less with lead times of 3 to 5 days. If you need any help deciding on the right Celotex insulation for your project, get in touch with our team on 020 3582 6399 or via our Live Chat .

36 products
  • 150mm Celotex XR4150 2.4m X 1.2m | Celotex 150mm
    150mm Celotex XR4150 2.4m X 1.2m | Celotex 150mm Floor Insulation
    Vendor
    Celotex
    Regular price
    £41.99 £50.39
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    £41.99 £50.39
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  • Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm
    Celotex XR4000 Insulation Board 1.2m x 2.4m - 110mm to 200mm Loft Insulation
    Vendor
    Celotex
    Regular price
    from £34.25 £41.10
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    from £34.25 £41.10
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  • Celotex 40mm TB4040 2.4m x 1.2m
    Celotex 40mm TB4040 2.4m x 1.2m Floor Insulation
    Vendor
    Celotex
    Regular price
    £15.40 £18.48
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    £15.40 £18.48
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  • 70mm Celotex GA4070 2.4m x 1.2m
    70mm Celotex GA4070 2.4m x 1.2m Floor Insulation
    Vendor
    Celotex
    Regular price
    £22.88 £27.46
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    £22.88 £27.46
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  • 90mm Celotex GA4090 2.4m x 1.2m
    90mm Celotex GA4090 2.4m x 1.2m Floor Insulation
    Vendor
    Celotex
    Regular price
    £28.60 £34.32
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    £28.60 £34.32
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  • Celotex 60mm GA4060 2.4m x 1.2m
    Celotex 60mm GA4060 2.4m x 1.2m Floor Insulation
    Vendor
    Celotex
    Regular price
    £20.80 £24.96
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    £20.80 £24.96
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  • Celotex PL4025 37.5mm 2.4m x 1.2m
    Celotex PL4025 37.5mm 2.4m x 1.2m Wall Insulation
    Vendor
    Celotex
    Regular price
    £31.75 £38.10
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    £31.75 £38.10
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  • Celotex 30mm TB4030 2.4m x 1.2m
    Celotex 30mm TB4030 2.4m x 1.2m Floor Insulation
    Vendor
    Celotex
    Regular price
    £12.40 £14.88
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    £12.40 £14.88
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