About Cavity Insulation
Cavity insulation and membranes improve the thermal and acoustic performance of walls and roofs. Rigid boards, slabs and rolls reduce heat loss, while breathable membranes and cavity closers manage moisture and cold bridging.
Every product is sold by the ea and priced on application, so you only pay the current trade rate. Add the line to your quote list, call the trade counter or email your take-off and we will confirm stock, check the price and book a delivery slot the same business day.
Common uses
- Full-fill or partial-fill cavity wall insulation
- Loft, roof and floor insulation
- Cavity closers at windows, doors and openings
- Breather membranes for pitched and flat roofs
Estimating quantities
Measure the area of the element you are insulating and divide by the coverage per pack or board. For cavity walls, remember to deduct openings. Add 5% for cuts and offcuts. The U-value target will dictate the thickness required.
Use our Insulation calculator to convert your dimensions into the number of eas you need.
Delivery and storage
Insulation boards and rolls are lightweight but bulky; they are delivered wrapped on pallets. Store them flat and dry, and avoid compressing boards because this reduces their thermal performance.
Need a price or a stock check? Add Loft Roll to your quote list, call the trade counter, or email your schedule. We reply the same business day with a written quote and a delivery option for your postcode.