
Great British Insulation Scheme – Free Insulation Grants
What is the Great British Insulation Scheme?
The Great British Insulation Scheme (GBIS) is a government initiative (launched 2023) to help more households insulate their homes.
Unlike ECO4's whole-house approach, GBIS mainly covers single insulation measures. It's designed to include households who might not qualify for ECO4. We've completed over 2,000 jobs helping homeowners access these schemes.
Eligibility Criteria
The GBIS has broader eligibility criteria than ECO4:
- Homes with EPC rating of D, E, F or G
- In England: Council tax band A-D
- In Scotland/Wales: Council tax band A-E
- If you are on benefits, you're likely covered by ECO4 – but GBIS picks up people who may not be on benefits

Available Measures Under GBIS
Cavity Wall Insulation
Fills the gap between the two layers of your external walls with insulating material, preventing heat from escaping. This can save up to £275 per year on energy bills.
Loft Insulation
Adds insulating material to your loft space to prevent heat loss through the roof. Up to 25% of heat can be lost through an uninsulated roof. This can save approximately £300 per year.
Other Insulation Measures
In some cases, other types of insulation such as solid wall or room in roof insulation may be available. Our qualified energy assessor will advise on the best options for your home.
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Why Insulate Your Home?
Insulation is one of the most cost-effective ways to improve your home's energy efficiency, providing numerous benefits:
Lower Energy Bills
Properly insulated homes require less energy to heat, potentially saving hundreds of pounds each year on energy bills. Loft insulation alone can save around £300 annually.
Improved Comfort
Insulation helps maintain a consistent temperature throughout your home, eliminating cold spots and drafts. Enjoy a cosy home all year round.
Environmental Impact
Using less energy to heat your home means lower carbon emissions. Insulation is one of the simplest ways to reduce your household's carbon footprint.
How to Apply for GBIS Funding
The process is quick and hassle-free. Renew Energies handles everything from application to installation.
- 1
Check Eligibility
We'll quickly confirm if you qualify for GBIS based on your home's energy performance certificate and council tax band. Most homes with EPC ratings of D-G are eligible.
- 2
Free Property Assessment
Our surveyor visits your property to confirm eligibility and our qualified energy assessor will determine the best insulation solutions for your home. This survey is completely free with no absolutely obligation following it.
- 3
Insulation Installation
TrustMark registered installers complete the insulation work – typically taking just a few hours to a day, with minimal disruption to your home.
- 4
Start Saving
Enjoy improved comfort and lower energy bills immediately! The insulation is fully funded through GBIS with no cost to you.
Frequently Asked Questions About GBIS
Don't miss out on free insulation!
Get in touch today to see if you qualify for the Great British Insulation Scheme.
Apply for GBIS Funding
Complete the form below to check your eligibility for the Great British Insulation Scheme. Our team will contact you within 24 hours to discuss your application.
Apply for Your Free Home Energy Upgrade
Fill out the form below to check your eligibility and start your application.