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Cavity wall insulation

About one third of all the heat lost in a home escapes through the walls. By insulating your walls you can reduce this loss, and cut your energy bills.

Since the 1950s, regulations have made it so that all cavity walls are insulated on construction. If your property is older than that, you might not have any insulation in place.

You can identify your home as having cavity walls by the way the bricks are laid. Cavity walls usually have an even pattern with all the bricks laid length-ways.

If the brickwork is covered, you can find out the construction by measuring the width of the walls. If it is more than 260mm it is likely to have a cavity.

Cavity wall insulation

Many cavity walls can be insulated by injecting insulation material into the cavity from the outside. This is a quick and non-intrusive process. The installer will drill small holes at intervals across the wall. Once the installation is complete, these holes will be filled so that they’re barely noticeable.

You will need to have this installed by a registered installer, as this is not a DIY job.

Grant funding

There is currently grant funding to support the installation of cavity wall insulation within UK homes. This is called Energy Company Obligation (ECO) and it can fully fund the installation in most cases.

In order to access this funding you will need to be considered to be in a vulnerable situation, and contact an accredited installer to do the works.

How to find an accredited Installer

An ECO accredited installer will be able to access the funding for you. We can assist you with funding a trusted local accredited installer as part of our LEAP free home energy advice visits.