Many homes across the UK can now have cavity wall insulation installed free of charge by taking advantage of an ECO grant.

UK energy companies provide the grants as part of the Energy Company Obligation (ECO) scheme. They are obliged by the Government to improve the energy efficiency of UK homes, particularly for those are most in need of reducing their fuel bills.

The good news is that, from January 2014, every home will potentially qualify for free cavity wall insulation, regardless of what benefits are received by the residents.

Cavity wall insulation grants can cut your energy bills

Cavity wall insulation can reduce your bills by £200 a year.

In fact, more heat is lost through your cavity walls than any other part of your home. It’s frustrating to know that as much as 40% of the heat you are paying for is escaping through your walls. Wouldn’t it be good to get some of that back? Cavity wall insulation grants have many benefits, not least a dramatic reduction in your energy bills.

How it works

  • 1 Check eligibility

    Enter your details into the online form to calculate your grant.

  • 2 Complete form

    Complete the form and we’ll pass this to an approved installer.

  • 3 Free survey

    A free survey will ensure your property is suitable.

  • 4 Installed

    Get insulation or a boiler installed for free.

Insulating your walls is quick and mess-free.

A professional insulation installer will be able to carry out cavity wall insulation in around 2-3 hours, with the minimum of disruption. The installer will drill a series of small holes (around 25mm) in order to reach the gap between your two outer walls. They will then blow or inject insulation material (this can vary but typically it is made up of tiny pockets of air that prevent cooler air passing through) into the gap between your two outer walls.

Not all houses can receive cavity wall insulation.

Houses built after 1930 are likely to have cavity walls.

It may sound obvious, but there needs to be a cavity, or gap, between the two layers of brick which make up your outer wall. Typically, homes built between 1930 and 1995 will have been constructed with two outer layers and are therefore suitable to receive cavity wall insulation. If it was built before this, you are more likely to have solid walls, which are not suitable for this type of insulation.

As a (very) general rule if your outside wall measures 30cm thick, then chances are you have a cavity wall. Anything less than this and it’s more than likely to be solid.

Some benefits of cavity wall insulation grants:

  • Increase the value and saleability of your home
  • Increase your energy rating
  • Create a warmer and more comfortable environment for your family
  • You can find insulation grants up to 100% towards the cost of the work
  • An average home could save £265 off their annual energy bill

Calculate your grant enter your postcode

60% of homes can receive cavity wall insulation – is yours one of them?

The quickest and easiest way to find out for sure whether you can receive cavity wall insulation is to arrange a free survey. A local contractor will be able to tell you immediately whether your home can receive it.