Celotex CW4075 75mm x 1200mm x 450mm - Celotex Insulation
Celotex CW4075 75mm x 1200mm x 450mm - Celotex Insulation
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Celotex CW4075 75mm x 1200mm x 450mm

SKU: cw40755

Est Delivery between and .

Next Day Delivery on Orders placed before 11am (ex. weekends)

Order now and get free delivery on all Celotex orders over £300 ex vat.


Introducing the Celotex CW4075 Cavitywall Insulation - your key to superior thermal performance for partial-fill cavity wall applications. Each pack contains 8 sheets of excellence, each sized at 1200mm x 450mm, giving you a total area coverage of 4.32m². With a robust thickness of 75mm and a low thermal conductivity of 0.023 W/mK, this insulation delivers exceptional energy savings that last.

Crafted with a polyisocyanurate (PIR) rigid foam core and aluminium foil facings with low emissivity on both sides, it seamlessly fits between cavity wall ties using convenient clips, ensuring retention and ease of installation. The foil facers also enhance thermal insulation in cavity wall air spaces. Plus, the insulation boasts remarkable dimensional stability and a commendable compressive strength of 120kPa.

Certified with an A+ rating by the BRE Green Guide 2008, CE marking in compliance with BS EN 13165:2001, and manufactured adhering to BS EN ISO 9001:2000 quality management systems, Celotex CW4075 is the smart choice for sustainable and efficient insulation solutions. This product is environmentally conscious, being CFC/HCFC-free, with zero ozone depletion potential (ODP) and low global warming potential (GWP). Experience the benefits of innovation, quality, and reliability with Celotex CW4075. Get yours today and embrace energy-efficient living.


  • The insulation component of this Celotex is given an A+ rating in comparison to the BRE Green Guide 2008
  • This got CE marking complying with BS EN 13165:2001
  • This is CFC/HCFC free that means zero ozone depletion potential (ODP) along with low global warming potential (GWP)
  • This is formed in accordance with BS EN ISO 9001:2000 and quality management systems by Celotex Limited

    Key Features:

    • Size of Board: 1200 x 450 mm
    • Thickness: 75 mm
    • Thermal conductivity: 0.023W/mK
    • Area/pack: 4.32m2
    • Board weight: 2.48kg
    • Compressive strength: 120kPa
    • Water vapour resistance: Greater than 150MNs/g
    • Dimensional stability: DS (TH) 8

    Other Related Products

    Celotex Cavitywall 47mm: Looking for a thinner option? Check out the 47mm variant for a versatile solution.

    Celotex Cavitywall 100mm: Need more thickness? The 100mm variant provides enhanced thermal performance.

    Celotex PL4000 72.5mm: For specific applications, the PL4000 72.5mm is engineered to meet your insulation needs.

    50mm Celotex GA4050: Need a different size? The 50mm Celotex GA4050 offers flexibility and efficiency.

    Celotex PL4000 62.5mm: Another option in the PL4000 series, the 62.5mm variant offers a different dimension.

    150mm Celotex XR4150: When thickness matters, the 150mm Celotex XR4150 provides outstanding insulation.

    Celotex PL4000 Insulated Plasterboard: Simplify installation with the convenience of insulated plasterboard, available in various sizes.

    Celotex TB4000 Thermal Bridging Board: Combat thermal bridging effectively with Celotex TB4000, offered in different sizes.


    Frequently Asked Questions

    What is the Celotex CW4075 insulation's main application? The Celotex CW4075 insulation is ideal for use in partial-fill cavity wall applications, providing superior thermal performance.

    How many sheets are included in a pack of Celotex CW4075? Each pack contains 8 sheets of Celotex CW4075 insulation, each measuring 75mm x 1200mm x 450mm.

    What is the total coverage area of one pack? A single pack of Celotex CW4075 insulation covers approximately 4.32 square meters.

    What is the weight and compressive strength of Celotex CW4075 insulation? Each board weighs approximately 2.48kg, and it has a compressive strength of 120kPa.

    8no sheets per pack. Each sheet 1.2m x .45m. Price per pack.

    brand Celotex
    coverage 4.32m2
    length 1200mm
    material-type Polyiso
    thermal-conductivity 0.023 W/mK
    thickness 75mm
    width 450mm

    Est Delivery between and .

    Next Day Delivery on Orders placed before 11am (ex. weekends)

    Delivery will always take place on a weekday (Mon - Fri).
    For information on delivery costs and more view our delivery info page.

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