The Cavity Wall Insulation Process

We improve your home’s energy performance by filling the cavity – the gap between your inner and outer walls – with insulating materials such as foam or mineral wool. This creates a robust thermal barrier, which is key to preventing heat from escaping in colder months and keeping your home cooler when it’s warm. The result is a more comfortable home and significantly reduced heating costs. The best part? Installation is usually fast, causes minimal disruption, and won’t change how your home looks from the outside.

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Here's how it works:

Cavity wall insulation is a smart home improvement designed to make your home more energy-efficient. Many homes built after the 1920s in the UK have a cavity – an empty gap between the inner and outer layers of their external walls. We fill this gap with insulation material, which creates a barrier to stop heat from escaping. This means a warmer home, greater comfort, and lower energy bills for you.

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