0333 344 1542

Cavity Wall Insulation

Did you know that about a third of the heat lost in an uninsulated home escapes through the walls? That’s why properly insulating cavity walls can help you save energy and cut costs off your heating bill.

While houses built from the 1990s onwards generally have wall insulation, older homes may not have any at all. Most houses in the UK have either solid walls or cavity walls. If your house was built after the 1920s, it likely has cavity walls. A cavity wall is made up of two walls with a gap in between, known as the cavity. The outer leaf is usually made of brick, and the inner layer of brick or concrete block. Pre-1920 homes are more likely to have solid walls, which have no cavity and are usually made of brick or stone.

Cavity wall insulation is the process of injecting insulation material into the cavity from the outside. A specialist company will drill small holes in the outside walls, inject insulation through the holes, and then seal them with cement. The insulation materials used are usually mineral wool or polystyrene beads, although polyurethane foam may sometimes be used instead.

To insulate your cavity walls, the installer drills small holes around 22mm in size at intervals of around 1m in the outside wall of your home. The installer then blows insulation into the cavity using special equipment. Once all the insulation is in, the installer fills the holes in the brickwork so that they’re barely noticeable.

Our cavity wall installers are all signed up to a code of professional practice, and the installation is guaranteed for 25 years by an independent insurance-backed guarantee.

We also offer cavity wall insulation removal or extraction services. Our comprehensive solution includes the use of advanced methods and equipment to remove all types of insulation efficiently. There are several reasons why insulation needs to be removed, including incorrect installation, defective insulation material, wet insulation due to poorly maintained properties, flooding, fire damage, old damp loft insulation due to a leaking roof, or insulation that has become impregnated by animal faeces due to infestation. Let us be your go-to experts for cavity wall insulation and extraction services.

Get in touch now:


Telephone: 0333 344 1542

Email: info@ecohomeuk.co.uk

Head Office

Trym Lodge






Trym Lodge Henbury Road,
Bristol, England, BS9 3HQ
Company number 13063074
VAT GB433 1155 34

Eco Home UK Group Ltd is an Introducer Appointed Representative (Financial Services Register No. 961089) of Phoenix Financial Consultants Limited ("Phoenix"). Phoenix is a credit broker, not a lender. Phoenix is authorised and regulated by the Financial Conduct Authority (FRN: 539195), and offers finance from its panel of lenders. All finance subject to status and credit checks.