CAVITY WALL INSULATION
ABOUT A THIRD OF HEAT LOST IN AN UNINSULATED HOME ESCAPES THROUGH THE WALLS. CAVITY WALL INSULATION CAN CUT YOUR HEATING BILLS BY UP TO £280 ANUALLY.
Under the Energy Companies Obligation, we can offer free internal wall insulation for homes that are eligible. To find out how to qualify, please visit our funding page.
WHAT IS CAVITY WALL INSULATION?
“The whole process didn’t take very long at all. Glad I had it done.”
“You can’t even tell I’ve had it done! The installers were a pleasure to have in my home and they really reassured me. The work is great, the staff were helpful and I can already see the benefits. I will definitely be recommending you to my family and friends. Thanks very much :)”
An engineer blowing the material into the cavity.
Cavity walls differ to solid walls as they are in fact two walls with a gap in between - this is called the cavity. The outer wall is often made of brick while the inner wall could be brick or concrete.
Cavity wall insulation works by filling the cavity space with material that reduces heat loss, which is designed to stop the air moving around inside the cavity (air is still the actual insulator).
Houses built after the 1920s tend to have cavity walls, making them good candidates for cavity wall insulation.
so What’s the process?
To insert the insulation material into the wall cavity, small holes around 23 millimetres in size, must be drilled in the mortar joints of your walls. For maximum coverage, the holes should be roughly 1.5 meters apart.
Once the holes are drilled, the installers will blow the insulation into the cavity using specialised equipment. Now the cavity is full of insulation material, the holes must be filled-in to prevent moisture from seeping in. The entire process can take as little as 2 hours.