What is Cavity Wall Insulation Grant?

Cavity wall insulation fills the gap between a property's two outer walls to cut heat loss. UK government schemes — currently the Energy Company Obligation (ECO4) and the Great British Insulation Scheme — offer grants or fully funded installation to eligible households, typically those on certain benefits or in lower-rated EPC homes. Installation should be carried out by a CIGA-guaranteed or TrustMark-registered installer, and a 25-year CIGA guarantee is standard.

Related terms

Find verified property & construction businesses

Search the Yolist directory for UK businesses whose listings reference Cavity Wall Insulation Grant.

Search Yolist

Cite this definition

Yolist. (2026). What Is Cavity Wall Insulation Grant? Yolist UK Business & Trade Glossary. Retrieved June 9, 2026, from https://yolist.uk/glossary/cavity-wall-insulation-grant

Embed this definition

Paste this snippet into your article — it links back to the source definition.

<p>Source: <a href="https://yolist.uk/glossary/cavity-wall-insulation-grant">Cavity Wall Insulation Grant — Yolist UK Business & Trade Glossary</a></p>