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Celotex CW4000 Cavity Insulation Board 1200 x 450 x 100

Product Code:   113875

Celotex CW4000 provides a simple solution for partial fill cavity walls. High performance insulation featuring low emissivity foil facings, CW4000 offers enhanced thermal performance in cavity air spaces compared to typical PIR solutions. These enhanced values deliver thinner solutions to meet popular target U-values. Celotex CW4000 is supported by BBA certification, achieves an A+ rating when compared to the BRE Green Guide. Always install Celotex CW4000 in accordance with the instructions supplied by Celotex.

  • Width: 1200 mm
  • Length: 450 mm
  • Coverage: 0.324 m3
  • Pack Quantity: 1
  • Thermal Conductivity: 0.022 W/mK
  • Fire Retardant: Yes
  • Thickness: 100 mm
  • Material: PIR (Polyisocyanurate)
  • Usage: Cavity Insulation
  • Certifications Met: Yes
  • Type: BBA A+ BRE Green Guide
  • Heat Loss U Value: Depends on build-up
  • Thermal Resistance R Value: 4.50 m²K/W
  • Brand Name: Celotex

£10.82

£20.04 per SQM

In Stock
Delivery: Big & bulky within 7 working days

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Celotex CW4000 provides a simple solution for partial fill cavity walls. High performance insulation featuring low emissivity foil facings, CW4000 offers enhanced thermal performance in cavity air spaces compared to typical PIR solutions. These enhanced values deliver thinner solutions to meet popular target U-values. Celotex CW4000 is supported by BBA certification, achieves an A+ rating when compared to the BRE Green Guide. Always install Celotex CW4000 in accordance with the instructions supplied by Celotex.

  • Comes in conveniently sized boards for installation between cavity wall ties
  • Achieves an A+ rating when compared to the BRE Green Guide 2008
  • Is certified under BBA certificate number 94/3080
  • Includes low emissivity foil facings giving improved thermal insulation performance within cavity air spaces
  • Is Energy Saving Trust Recommended
  • Future proofs the energy performance of new and existing buildings
  • Is available in a standard board size of 1200mm x 450mm

Our Click & Collect service allows you to order online and then collect from your local store.

Click and collect orders can be made at any time on the Wickes website or via our Call Centre between 8am and 8pm Monday to Friday, between 8.30am and 5.30pm on Saturdays and between 10am and 4pm on Sundays by calling 0330 123 4123. Your call will be charged at the same rate as calling a landline, call rates from mobile providers will vary.

Subject to stock availability, we will aim to ensure that click and collect orders are available for collection from the nominated store within 1 store trading hour of our first email confirming your order number. Please check your selected stores trading hours via our Store Locator as these may vary.

How much will it cost?

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Order online or telephone and collect your items in just 1 hour

Big & Bulky 7 Day Products

Our Big & Bulky 7-day delivery is for the heavy stuff that takes a little longer to arrange. Normal Big & Bulky Delivery charges apply for Big & Bulky 7 Day Products. You can request a Saturday delivery for only £5 extra (if you order by 5pm Friday) depending on your postcode. Check this with our Postcode Matrix.

Saturday delivery may take longer than 7 working days (this is because delivery will be on the Saturday after the end of the 7 working day lead-time).

Big & Bulky 6 Days a Week delivery is available on stuff like sand, cement, timber and sheet materials.

How much will it cost?

(including 'Big & Bulky' 7-day delivery lead time products)

Distance from your
nearest Wickes Store
Big & Bulky
Mon - Fri Delivery
Big & Bulky
Saturday Delivery
0 - 10 Miles £30 £35
10 - 20 Miles £35 £40
20 - 40 Miles £45 £50
40 - 60 Miles £85 £90
60+ MIles £95 £100
Important: Delivery will be on the Saturday following the end of the delivery lead time

Returns & Refunds. 

Set out below is a summary of our Returns & Refunds policies, for full details see our Cancellations, Returns and Refunds policy

Products Which Are Not Required

You can return any unused product to us in its original condition for a refund within 30 days of delivery to you. Please note that we may be unable to accept the return of made-to-measure products unless they are faulty or have been damaged in transit.

Cancellation Rights

You can cancel any online order and receive a full refund (including standard delivery charges) at any time before the product is dispatched or within 14 days starting on the day after delivery.

Please note that if you cancel an order after the product has been delivered, you will be responsible for returning the Product to us at your cost within 14 days of the cancellation of your order. You can arrange for the product to be collected, by us or our nominated carrier, or return the product to your local Wickes store for free, with proof of purchase.

Faulty or Damaged Products

In the unlikely event that a delivered product is faulty or damaged, we will exchange it or provide you with a refund, as long as we are notified of the product's fault within 30 days of it being delivered to you.