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You may qualify for free or part-funded cavity wall insulation if your home has a suitable unfilled cavity, an EPC rating of D-G, and your household meets common income, benefits or vulnerability criteria.
A material installed into the gap between the inner and outer walls of homes built with cavity construction (typically 1920s-1990s).
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Households on qualifying benefits, lower-income households via LA Flex, or homes with vulnerable occupants. EPC D-G is typically prioritised.
A pre-install survey checks construction, condition and ventilation. The work is recorded on the EPC at next assessment.
Run our checker, then book a free survey from an approved installer.
DisclaimerThis page is for guidance only and does not guarantee eligibility. Final approval depends on the relevant scheme provider, local authority, installer assessment and property survey.
A proper survey identifies homes where insulation is not suitable. Reputable installers refuse unsuitable jobs.
Yes, but it is more involved. Specialist surveys are needed.
Usually a single day for an average home.
Most major schemes prioritise EPC D-G homes. If your rating is unknown, you can still use our checker and confirm later.
No. It is a guidance tool. Final eligibility is confirmed by the relevant scheme provider, council or approved installer.
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