Free Insulation Grants For Home Improvement
HIGH ENERGY BILLS? Cut Costs with Free Insulation Grants!
Free insulation grants are available for Cavity Wall Insulation, Internal Wall Insulation, Loft Insulation, and Room in Roof Insulation through the Energy Company Obligation (ECO4) and Great British Insulation Scheme (GBIS). UK householders may be eligible if they meet specific criteria.
Grants for External Wall Insulation are also available, with eligibility and amounts varying. Low and mid-tier upgrades are typically fully covered, while complex high-tier upgrades may require a household contribution. Special provisions may apply in certain Scottish postcodes for properties off the gas network.
Home Insulation Grants are non-repayable. Qualified applicants can have work completed by approved installers who claim the grant directly.
These grants are part of the Energy Companies Obligation (ECO4). Under ECO4, major energy suppliers are required to fund insulation for domestic households, focusing on low income, fuel poor, and vulnerable individuals. The scheme aims to improve home heating efficiency and combat rising energy costs.
ECO4, launched in 2022, is the current Government-backed energy efficiency scheme running until March 2026. It targets reducing carbon emissions and fuel poverty. As of February 10, 2025, 160,560 ECO4 projects have been submitted.
ECO4 prioritises households with EPC ratings of D, E, F, or G, particularly those on low incomes (earning less than £31,000 per year) or receiving means-tested benefits. Since 2023, the GREAT BRITISH INSULATION SCHEME (GBIS) has extended support to households not on income-related benefits. The GBIS aims to retrofit 300,000 homes by March 2026 with a budget of £1 billion.
Please see our Great British Insulation Scheme page for more information and use the online eligibility checker to see if you qualify.
New for 2025: The Warm Homes: Local Grant launches April 1st, allocating £500 million to 73 projects across 270 local authorities over three years. It offers grants up to £15,000 for energy upgrades and an additional £15,000 for low-carbon heating. This plan targets low-income households with EPC ratings of D to G to significantly reduce energy bills across the UK.
Additionally, the Boiler Upgrade Scheme, part of the broader Warm Homes Plan, offers grants of up to £7,500 for heat pump installations.
As long as you own or rent the property and it is currently occupied i.e. not under renovation, you should qualify for a Free Insulation Grant. If you do not qualify, we can still arrange for an approved Installer to provide you with a quote for the work.
Note – 100% grants are subject to a free, no-obligation survey. In most cases it is free but you may be asked to pay a small contribution, depending on the size and efficiency of the property.
How It Works
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Complete Online Form
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Free Survey Booked
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Insulation Installed
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Grant Claimed
Which Benefits Qualify For Free Insulation?
If someone living in the property receives one or more of the benefits listed below then you should qualify to have Cavity Wall Insulation, Internal Wall Insulation, Loft Insulation and Room in Roof Insulation installed completely free of charge:
- Child Tax Credit
- Housing Benefit (not the single person’s 25% Council Tax reduction)
- Income-Based Jobseekers Allowance
- Income-Related Employment Support Allowance
- Income Support
- Pension Credit Savings Credit
- Pension Guarantee Credit
- Universal Credit
- Working Tax Credit
- Child Benefit *
* Combined annual household income (before tax and National Insurance) limits apply. See our who qualifies page for full details.
You may still qualify for free insulation if no one in your household is in receipt of a qualifying benefit, or if your annual household income £31,000 or less. You may even qualify under the Great British Insulation Scheme.
There are a number of schemes running and the criteria for funding is complex. FreeInsulation will allocate you to a company who is able to calculate which scheme is most appropriate for you, to ensure that you’ll need to pay very little for the energy efficiency measures, or even to get it for free.
Even if you are not entitled to a 100% free insulation grant, FreeInsulation can still put you in touch with an approved local Installer who can provide you with a quote.
Cavity Wall Insulation Grants
All householders in receipt of a qualifying benefit can claim a 100% free Cavity Wall Insulation Grant, as long as the property is occupied and not under renovation.
Properties built of brick between 1924 and 1982 are generally suitable for Cavity Wall Insulation, although we can help with properties that were built up to 2005 without insulation.
Please see our Cavity Wall Insulation page for more information.
Loft Insulation Grants
The property must be owned or rented, currently occupied and not under renovation. If you currently receive one or more of the benefits listed above, then you should be entitled to a 100% grant.
There must be 100mm (4 inches) or less of insulation already installed to qualify for a grant. This will typically be level with or below the joists. If it is above this level, we can arrange a free survey and quote to top up to 270mm.
Please see our Loft Insulation page for more information.
Room In Roof Insulation Grants
As long as you are in receipt of a qualifying benefit as listed above, then you should receive Free Room In Roof Insulation. Even if you do not qualify for a room in roof insulation grant, we can still arrange for an approved installer to give you a quote.
The property must have been constructed with roof rooms or have a loft conversion. There must be little or no insulation in the the walls & ceiling and a fixed staircase must be present (not a pull-down loft ladder or similar). You also need to be a homeowner or tenant to qualify.
Please see our Room in Roof Insulation page for more information.
Internal Wall Insulation Grants
If someone in your household claims a qualifying benefit, you may be eligible for free or subsidised Internal Wall Insulation. Your property must have solid walls and be owned or rented (with landlord permission for tenants).
Additional eligibility criteria include:
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EPC rating D or below (E for renters)
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Household income under £31,000/year
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Council Tax bands A-D in England, A-E in Scotland and Wales
Currently, grants are only available for mid-terraced properties. Installing Internal Wall Insulation can save up to £360 annually on energy bills for these homes.
If you don’t qualify for a grant, we can arrange a free survey and quote. A free, no-obligation survey is required to confirm eligibility and assess your property’s suitability.
Please see our Internal Wall Insulation page for more information.
External Wall Insulation Grants
External Wall Insulation costs typically range from £6,000 to £30,000. FreeInsulation can arrange a free survey and quote from an accredited installer.
Free insulation is available for residents in KW, IV, or PH postcodes without mains gas. It’s suitable for solid brick or concrete walls and unsuitable cavity walls.
Eligibility criteria include:
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Household income under £31,000/year
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EPC rating D or below (E for renters)
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Council Tax bands A-D in England, A-E in Scotland and Wales
Installation can save up to £360 annually on energy bills.
Please see our External Wall Insulation page for more information.
How Much Money Can I Save?
Proper insulation can significantly reduce heat loss and lower your energy bills:
Cavity Wall Insulation can save up to £300 per year on bills. Uninsulated cavity walls can lose up to 35% of a home's heat.
Solid Wall Insulation, whether internal or external, can save households up to £360 annually on bills for mid-terraced properties. It also helps reduce CO2 emissions.
Loft Insulation can save you up to £355 per year on heating bills by preventing up to 25% of heat loss through the roof.
Room in Roof Insulation can reduce heating bills by as much as £250 per year by preventing heat loss through walls and roof.
These savings are based on typical property types. Actual savings may vary depending on your property type and energy usage.
How can FreeInsulation help?
FreeInsulation have a network of approved Surveyors and Installers working throughout England, Scotland and Wales. All have access to grants and can carry out a free, no-obligation survey.
Our form will tell you which grant you are likely to qualify for. Once you have entered your contact details, we will allocate you to an approved local Surveyor/Installer who will contact you to arrange a free, no-obligation survey.
If you are happy to proceed after the survey, a date will be booked for the installation. Following the work, the Installer will claim the grant amount you are entitled to. If you need to pay towards the work, this will be invoiced on completion.