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Travis Perkins£21.29Visit shop 50mm x 1200mm x 450mm Celotex PIR Cavity Wall Insulation Board CW4000
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The 50mm Celotex CW4050 Cavity Wall Insulation Board is designed for homeowners and builders seeking an effective partial fill solution for masonry cavity walls. Its primary benefit is superior thermal performance, helping to reduce energy bills and improve building comfort. A potential caveat is its specific application for partial fill cavity walls, requiring appropriate installation techniques. This rigid polyisocyanurate (PIR) board features a double-sided aluminum foil facing for enhanced thermal efficiency and is certified under BBA certificate number 16/5343.
| Model Part Number | CW4050 |
|---|---|
| Brand | Celotex |
The thermal conductivity is 0.022 W/m.K. R-values can be calculated based on the thickness of the board used.
No, the CW4050 is specifically designed for partial fill applications. Other products are available for full fill systems.
The standard dimensions for this product are 1200mm x 450mm, with a thickness of 50mm.
Yes, it is designed for use within the cavity of masonry external walls.
Always consult the manufacturer's installation guide and relevant building regulations. The foil facing can contribute to thermal performance in sealed air spaces.
The Celotex CW4050 is certified under BBA certificate number 16/5343.
Use a sharp, dedicated insulation saw or a fine-toothed saw for clean cuts. Ensure the board is supported properly while cutting.
Ensure the building envelope is watertight before and during insulation installation. Proper installation of wall ties and cavity trays is crucial. Consult building regulations for details on vapour control layers if required.
Refer to the Celotex technical literature and U-value calculators for accurate performance data. Ensure accurate measurements and consider all elements of the wall construction.
Setup & Installation:
The Celotex CW4050 is designed for easy installation in masonry cavity walls. It should be cut to fit snugly between the existing wall ties. Ensure the boards are installed dry and protected from the elements during the construction process. Follow manufacturer guidelines and relevant building regulations for correct installation, ensuring the foil facing is correctly oriented if specified.
Compatibility:
This product is specifically designed for partial fill cavity wall applications in masonry constructions. It is compatible with standard building practices for cavity walls. Ensure compatibility with other building materials being used in conjunction with the insulation.
Care:
Store the boards flat in a dry environment, away from direct sunlight and moisture, until installation. Once installed, the insulation is protected by the building fabric. If boards become wet during storage or installation, they should be allowed to dry thoroughly before being enclosed.
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