Cavity Wall Insulation

Cavity wall insulation is an effective way to reduce heat loss through cavity walls with minimal disruption.

Cavity walls are generally insulated by drilling small holes (around 25mm in diameter) into the wall from the outside and blowing the insulation material through the holes to fill the cavity. The holes are then sealed up, resulting in very little change to the appearance of the wall.

*Figures are taken from Energy Saving Trust and are based on fuel prices as of October 2023. Estimates are based on insulating a three bed, semi-detached, gas-heated home.