Cavity Wall
Insulation

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Fnd out about installing Cavity Wall Insulation

Lower heating bills with Cavity Wall insulation

Cavity Wall insulation can make a big difference to your energy bills, as well as improving your home’s warmth and comfort. It can effectively stop as much as 33% of a home’s heat from leaking out through the walls.

We’re one of the leading Cavity Wall insulation installers in the south of England, with over 40 years of experience.

Our Cavity Wall installations come with a 25-year guarantee issued by the Cavity Wall Insulation Guarantee Agency (CIGA) Party Wall insulation – BBA certificate number 16/5303 Cavity White Wool insulation– BBA certificate number 89/2294 Cavity InstaBead White insulation – BBA certificate number 15/5258

Accreditation for our installation service – BBA certificate number BBA 1249

What happens at a cavity wall installation?

Work completed outside

All work takes place outside your property, we'll keep disruption to your home life to a minimum and installation can take as little as half a day. If you're concerned about the process, you can always drop us a call and our friendly customer service team will talk you through the steps involved.
How is it done?

A specialised machine installs the specified insulating material into the wall cavity. Depending on your survey, this could be fibre, wool or beads. The technician drills holes in a set pattern on the outer walls to pump or blow the insulation material inside the wall cavity. We drill as few holes as possible, just enough to ensure the entire wall cavity is filled.
What is the end result?

Once the wall cavity is filled, the technician will seal all the holes with matching mortar. Many of our customers say they can’t see where the work was done. All installations are carried out by experienced InstaGroup accredited technicians who meet high standards of workmanship. We use only BBA-approved products.

How does Cavity Wall insulation work?

Cavity Wall insulation material is expertly installed into the gap or cavity between the two layers of brick that make up the outside walls of a property. Once installed, Cavity Wall insulation goes to work straight away, keeping in the warmth and lowering the home’s energy bills.

If your home shares an external wall with another property we can offer specialised Party Wall Cavity insulation. This helps to reduce heat loss from the shared or dividing walls between properties. It’s an ideal solution for semi-detached or linked buildings.

Not sure if your home has cavity walls? Its age is a big clue: if it dates from some time after the 1920s, it was probably built with cavity walls. We can check how your home is constructed at a no-obligation home energy assessment.

A professional survey is essential, as it will confirm if Cavity Wall insulation is right for your home. Our expert will survey the condition of the walls and brickwork inside and out, and assess the guttering and the windows. They’ll also drill a few small holes on the outside walls to check inside the cavity with a borescope. This makes sure it’s clear of rubble or old insulation material, and also helps to size up the cavity. (The holes are sealed up neatly afterwards).