Xtratherm XT/CW Cavity Wall Insulation Board T&G is a polyisocyanurate (PIR) based insulation solution for partial fill wall applications. It performs very well thermally, with a lamba value of just 0.022 W/mK, which means it minimises the passage of within the air space.
One thing that sets these Xtratherm cavity boards apart from other manufacturers is that they have T&G edges which allows the boards to slot together, thus minimising thermal bridging. As a partial fill solution, they maintain a residual cavity which protects against wind driven rain.
Sized at 1200mm x 450mm, the boards fit conveniently between traditional brick ties. They are suitable for brick and block cavity walls and can be used in new builds and extensions alike. Xtratherm cavity wall boards are sold in packs wrapped in plastic.
All delivery charges are shown in your basket and are dependent on the total value of the items in your basket. Our standard delivery charges for Instant Purchases are outlined below:
ORDER VALUE
DELIVERY CHARGE
Insulation and Plasterboard & Drylining Products
Under £150
£75
Between £150 - £300
£50
Between £300 - £500
£25
Over £500
FREE
Building Material Products
Under £250
£25
Over £250
FREE
SuperFOIL products
Each item
£10
Over £350 of these items
FREE
*Values/Charges ex VAT
This charge is based on delivery to England. If your delivery address is in Scotland or Wales, a member of our customer service team will contact you prior to processing your order should an additional delivery charge apply. We do not offer deliveries outside the UK mainland.