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Celotex CW4000 Cavity Wall Insulation Board


Celotex CW4000 Cavity Wall Insulation Board is available to order online at BSO more

Short delays due to nationwide shortage.

Delivery: 3 - 5 Working Days more details
Delivery Tier: Bulky more details
Product Information

Celotex CW4000 Cavity Wall Insulation Board

Celotex CW4000 Cavity Wall Insulation Board is a great choice when it comes to insulating and heating your building project. As insulation is a core feature of any new build, Celotex CW4000 Cavity Wall Insulation Board offers an affordable choice when looking for insulation to reduce heat loss in buildings.

BSO offers Celotex CW4000 Cavity Wall Insulation Board in three different sizes; 50mm thickness, 75mm thickness, and 100mm thickness meaning that you can find the right sized product to fit into your build. By using the cavity wall insulation board, you can significantly reduce the cost of heating the space within the building, meaning it will provide long term energy savings when considering the maintenance of the building.

Our Celotex CW4000 Cavity Wall Insulation Board is a great choice of product, with good quality and conveniently sized boards, so installation of the product is easily achieved.

Celotex CW4000 cavity wall insulation has the following features

  • Is easy to fit between wall ties using cavity tie clips for retention
  • Board size 1200mm X 450mm
  • Comes in thicknesses ranging from 25mm-100mm
  • Features a good reaction to fire performance when measured in accordance with new European standards
  • Comes in conveniently sized boards for installation between cavity wall ties
  • Includes low emissivity foil facings giving improved thermal insulation with cavity air spaces
  • Has excellent dimensional stability
  • Provides reliable long term energy savings for buildings

Where can it be used?

Celotex CW4000 is used in partial fill cavity walls.

More Information
More Information
Product Brand Celotex
Delivery Information

Delivery Options and FAQs


What will my delivery cost?

We offer delivery tiers based on the size of your order:

Delivery Tier Charge
Free Delivery £0
Small £6 Free over £100
Medium £12 Free over £200
Large £20 Free over £300
Bulky £30 Free over £500
Pallet £40 Free over £750

A basket containing items from two or more delivery tiers will be charged at the highest tier.

Where do you deliver?
We deliver within mainland England, Scotland and Wales. We do not deliver to Northern Ireland.
How will my bulky or pallet order be delivered?

For bulky deliveries we will call or text to arrange a suitable delivery date. Please ensure you provide an appropriate mobile number at the checkout.

All bulky and pallet orders will be delivered by large lorry to the kerbside. Please ensure there is suitable access to the delivery address before ordering.

Please note a signature is required for all bulky and pallet deliveries.


Should you have any questions regarding your delivery you can contact us via live chat or email by visiting our Contact Us page.

For more information please refer to our full Terms & Conditions.

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