Celotex CW4050 PIR Cavity Wall Insulation 1200 x 450 x 50mm (SKU: 673189)

The Celotex CW4050 is a partial fill insulation board for masonry cavity walls.



The board is pre-sized so as to fit between cavity wall ties. It's suitable for use in both new and existing builds as well as extensions, making it a versatile option.



This board uses low emissive aluminium foil facing, which helps the board to achieve U-values.

We offer free delivery on orders over £300 with no minimum order requirements to customers near our network of branches. Standard delivery is 2-3 working days. Our standard delivery fee is £15. To find out if we can deliver to you please enter your postcode when prompted. If you need more help please contact your local branch. Once you have placed your order one of our team from your local branch will be in touch to arrange a delivery date for you. We offer free next day delivery on smaller postable items such as screws, gloves and some tools on orders over £50. A postage cost of £5 applies for orders below this. These items can be delivered nationally by our trusted delivery partner DPD to most mainland UK addresses. We endeavour to ship all orders within 24hrs of receiving the order. Please see our delivery page below for further details.

If you’d like to return your goods, or part of your goods, please contact your local Elliotts branch to arrange this. Returns are accepted if defective or damaged (please contact us) or if the product is returned in new/unopened condition. Please see our returns page below for further details.