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
  • Celotex 20mm TB4020 2.4m x 1.2m
    Celotex 20mm TB4020 2.4m x 1.2m Wall Insulation
    Vendor
    Celotex
    Regular price
    £11.70 £14.04
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    £11.70 £14.04
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  • 130mm Celotex XR4130 2.4m x 1.2m
    130mm Celotex XR4130 2.4m x 1.2m Floor Insulation
    Vendor
    Celotex
    Regular price
    £41.20 £49.44
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    £41.20 £49.44
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  • Celotex CW4075 75mm x 1200mm x 450mm - 4.32m2
    Celotex CW4075 75mm x 1200mm x 450mm - 4.32m2 Cavity wall Insulation
    Vendor
    Celotex
    Regular price
    £47.20 £56.64
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    £47.20 £56.64
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  • Celotex CW4100 100mm x 1.2m x 0.45m - 3.24m2
    Celotex CW4100 100mm x 1.2m x 0.45m - 3.24m2 Cavity wall Insulation
    Vendor
    Celotex
    Regular price
    £44.45 £53.34
    Sale price
    £44.45 £53.34
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  • Celotex 110mm XR4110 2.4m x 1.2m
    Celotex 110mm XR4110 2.4m x 1.2m Floor Insulation
    Vendor
    Celotex
    Regular price
    £36.10 £43.32
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    £36.10 £43.32
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  • Celotex 165mm XR4165 2.4m x 1.2m (Pallet of 12)
    Celotex 165mm XR4165 2.4m x 1.2m (Pallet of 12) Wall Insulation
    Vendor
    Celotex
    Regular price
    £719.00 £862.80
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    £719.00 £862.80
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  • Celotex XR4200 200mm x 2.4m x 1.2m (Pallet of 12)
    Celotex XR4200 200mm x 2.4m x 1.2m (Pallet of 12) Loft Insulation
    Vendor
    Celotex
    Regular price
    £1,018.80 £1,222.56
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    £1,018.80 £1,222.56
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  • Celotex CW4085 85mm (Pallet Of 112 Sheets)
    Celotex CW4085 85mm Cavity wall Insulation
    Vendor
    Celotex
    Regular price
    £915.00 £1,098.00
    Sale price
    £915.00 £1,098.00
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