Isover CWS 36 Cavity Wall Slab, 100mm x 455mm x 1200mm (6.55m²) (SKU: 106006)

The Isover cavity wall slab 36 adds excellent thermal performance to your home’s external cavity walls. Meeting all UK thermal building regulations, this Isover CWS 36 wall slab helps prevent heat loss in your home by trapping the warm air in the insulation material and stopping air from circulating.



This Isover cavity wall slab 36 is also easy to cut, handle and install. It can be fitted as the walls go up and are sized to slot between standard-spaced wall ties. Sound transmission is minimised and the material used is highly resistant to fire and won’t allow flames to spread quickly. This size of Isover 36 Cavity Wall Slab has a coverage of 6.55m².

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.