Requirements for Cavity Wall Insulation
To qualify for a cavity wall insulation grant, your property should have the following conditions:
Your house height should not exceed 12m.
The brickwork or masonry should be sound.
Your property's external walls should be accessible for fitting.
The external wall construction should be unfilled brick walls with a minimum of a 2-inch cavity.
Internal walls should be dry (damp issues must be addressed prior to insulation).
The property must not be of steel or timber frame construction.
Cavity Wall Insulation Grants for Pensioners
Age alone will not qualify you, but UK pensioners can apply for free cavity wall insulation through the ECO4 scheme if they have certain criteria.
Low-Income Group
Gross household income of less than £31,000 annually.
Receiving a means-tested benefit (such as Pension Credit Guarantee).
Home with an EPC rating of less than D (homeowners) or less than E (renters).
Living in social housing and at risk of cold (age may be an issue).
General Group
Council tax band A–D property in England or A–E property in Scotland & Wales.
A person with a medical condition that has been made worse by bad insulation.
Household with a child aged under 5 or with a resident aged over 65.
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Cavity Wall Insulation Grants in the UK – ECO4 & GBIS
Cavity wall insulation grants in the UK are offered by the Great British Insulation Scheme (GBIS) and the ECO4 scheme, enabling qualifying households to either partially or fully finance insulation. The government-funded grants aim to enhance domestic energy efficiency, alleviate fuel poverty, and assist the UK in meeting its net zero carbon emissions by 2050 target.
Grant eligibility varies with household income, EPC rating, council tax band, and eligibility for benefits. For the majority of cases, eligible applicants can obtain free cavity wall insulation in the UK, but more intricate installations may necessitate a contribution.
Are you eligible for free cavity wall insulation?
In order to qualify for a cavity wall insulation grant in 2025, your home should fulfill certain conditions:
Cavity wall insulation removal grants
In others, defective or inadequately fitted insulation must be removed. Although age on its own isn't an eligibility factor, pensioners can still be eligible for the Low-Income Group or General Group based on income, EPC rating, and health requirements.
How to File a Cavity Wall Insulation Complaint with CIGA
If you must complain about cavity wall insulation, the Cavity Insulation Guarantee Agency (CIGA) has a simple procedure:
Complaint Conditions
Guarantees – If your property is under a valid CIGA guarantee, you need to approach CIGA first for a resolution before claiming a grant.
Insurance Coverage – The removal should not already be covered by other building or home insurance coverages outside the ECO4 scheme.
Professional Recommendation – A Chartered Surveyor or certified professional needs to certify that your property's insulation requires removal prior to reinstallation.
Benefits of Cavity Wall Insulation Grant
Healthier Planet
Warm homes keep the heat in, limit energy wastage, and lower carbon output—promoting a greener, more sustainable UK.
Healthier Home
Stops damp, condensation, and mould, enhancing air quality and safeguarding your family's health.
Low Maintenance
Fully installed cavity wall insulation lasts for as long as 25 years with negligible maintenance.
Higher Property Value
Increases your EPC rating, making your home more desirable to buyers and tenants.
Fast Payback
Provides some of the largest annual energy savings, usually recouping its cost within less than 10 years.
ECO4 Scheme Eligibility | Free Boiler Grant UK 2025
You may qualify for the Eco Energy Solution if you receive one of these UK benefits
- Income-Based Jobseeker's Allowance (JSA)
- Income Related Employment & Support Allowance (ESA)
- Income Support (IS)
- Pension Guarantee Credit
- Working Tax Credit (WTC)
- Child Tax Credit (CTC)
- Universal Credit (UC)
- Housing Benefit
- Pension Savings Credit
John Smith
5 Aug 2025
Excellent service from start to finish. The team was professional and the new boiler works perfectly. Highly recommended for anyone looking for quality installation.
Emma Wilson
18 Jul 2025
Great experience with the team. They explained everything clearly and completed the work efficiently. Very satisfied with the results and would use again.
David Turner
11 Aug 2025
The installation was quick and hassle-free. My home feels warmer and my energy bills have already started to drop. Thank you for the fantastic service!
Sarah Patel
05 Sep 2025
I was unsure about applying for the ECO4 scheme, but the team guided me through every step. The new boiler is brilliant and the process was smooth.
Michael Brown
28 Jun 2025
Very professional and friendly staff. The free boiler grant made a real difference for my family. Highly recommend this service to others.
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