If your home’s got cavity walls, fitting cavity-wall insulation can be one of the most cost-effective ways to improve your home’s energy efficiency and reduce your energy bills. Most homes built in ...

Around a third of all heat lost from a poorly insulated home escapes through the walls, which means installing cavity-wall insulation is often one of the most cost-effective measures you can take to ...

Cavity wall insulation The gap between two brick walls is filled with material that has a lower thermal conductivity than air. This is because it contains trapped air which cannot transfer energy ...