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Yes, the UK government provides grants for external wall insulation in the UK for low-energy efficiency households. The uninsulated walls are responsible for over 33% of home heat loss, which causes whopping energy bills in damp and drafty homes.
Due to fuel poverty, low household income, and low efficiency, these government schemes are implemented to help those who can’t afford these measures for themselves.
Qualifying homes can get free external wall insulation through the Energy Company Obligation (ECO4) or the Great British Insulation Scheme (GBIS), both of which are open until March 2026 (which is only a few months away).
What Are the External Wall Insulation Grants?
The Schemes like (ECO4) and the GBIS provide free grants for not only external walls, but all necessary insulation measures for the entire household. The main goal is to make UK households energy efficient. So, properties use all energy for heating, instead of wasting through roofs, walls, and floors.
The grants cover the complete costs of making your household energy efficient. Whether you are looking for external wall insulation, internal, or cavity, these insulation schemes provide complete funding, including the materials, installation, and labour costs.
2 Grants Available for External Wall Insulation In the UK (2025)
As mentioned before, there are two main grants available that provide full funding for insulating your external walls. Both the ECO4 and GBIS cover England, Wales, and Scotland, while each area has individual energy efficiency schemes as well.
The Energy Company Obligation (ECO4)
The ECO4 scheme is a whole-house energy efficiency scheme funded by major energy suppliers and backed by the UK Government.
Here are the Insulation Measures covered by the ECO4 Scheme:
- Solid wall insulation (external & internal)
- Loft insulation (Room-in-roof & attic)
- Cavity Wall Insulation
- Underfloor Insulation
The experts assess your property needs and determine the best suitable insulating materials after the survey. All these measures are installed by Trust Mark-registered installers, and energy companies cover the cost of making your homes warmer.
ECO4 Eligibility Criteria
To ensure your eligibility for these government grants, your home should have low energy efficiency and not enough resources to get the insulation on your own. The eligibility criteria require the applicant to:
- Have properties with an EPC rating of lower D, E, F, or G.
- A recipient of means-tested government benefits
- If applying through LA Flex, the household income must be lower than £31,000/annum.
- Have a family member have a health condition aggravated by cold homes
- Have permission from the local planning authority (for listed/conservative areas only).
If your property has an insulation measure installed previously under any scheme, you might not qualify.
The Means-Tested Benefits Include
The benefits that help you qualify for the free insulation schemes under ECO4 are:
- Income Based – Jobseekers Allowance (JSA)
- Child tax credit (CTC)
- Universal Credit (UC)
- Income Related – Employment and Support Allowance (ESA)
- Income Support Allowance (ISA)
- Working Tax Credit (WTC)
- Pension Guarantee Credit
- Pension Savings Credit
- Housing Benefits
If anyone from your household receives any of these benefits, you can easily apply through ECO Energy Services by entering the postcode in the provided box above. The detailed process is described later in this blog.
The Great British Insulation Scheme (GBIS)
Formerly known as ECO+, the GBIS is administered by Ofgem and funded for help-to-heat groups. This scheme covers insulating solid walls (including external & internal), loft, and cavity wall insulation (one measure per property). It provides partial and complete funding for insulation measures to help vulnerable households in England, Scotland, and Wales.
GBIS Eligibility Criteria
To be eligible for the GBIS, a household must meet the requirements mentioned below in the provided table.
| Household Category | General Group | Low-Income Group |
|---|---|---|
| Owner Occupiers | Must be living in a Council Tax band A-D home in England or A-E in Scotland and Wales. If the household owns the home and EPC D or below, then the household can receive any qualifying insulation measure. | If the household owns the home and its EPC is lower than D or below, it can receive any qualifying insulation measure, plus heating controls. |
| Private Rented | Private renters with a home EPC D or E can receive any qualifying insulation measure other than cavity wall insulation and loft insulation. | Private renters with a home EPC rating of D or E can receive any qualifying insulation measure. |
| Social Housing | All social renters are included in the low-income group. | If the household lives in EPC E or below social housing, it can receive any qualifying insulation measure. If the home is EPC E, F, or G, only a qualifying innovation measure is allowed. |
Check Eligibilty For ECO4 Scheme
Get Free Heating System Installed Today at your Property Under ECO4!
Application Process for Free External Wall Insulation Grants
The application process for both schemes is quite similar for both shcemes. If you qualify, here is the process you need to follow:
Choose an Installer As Per Your Selected Scheme (Different for ECO4 & GBIS)
While you might apply directly through the local council, MCS and Safe Gas-registered installers can also apply on your behalf and help you meet the requirements. Before finalising an installer, see if they have all the accreditations and are trusted enough by their previous customers by reading testimonials.
Provide the Required Information & Documents
To back your claims of low-energy efficiency, low-income, and ownership or tenancy of the property, you need to provide the requested documents. The list of documents might vary as per your case, which will be requested over the phone by the grant experts.
Property Survey & Installation
Once you have qualified and completed the application process, the installers will schedule a survey for your property. This survey serves the purpose of:
- Determine measures required.
- Verify the provided information.
- Verify the suitability of the property for the requested improvements.
- Suggest alternatives if there are any issues (like space or feasibility).
Once the survey is completed and you have been approved for insulation measures, the installers will schedule the installation. If there are any issues, you need to be collaborative to get approval.
Is External Wall Insulation Worth It?
Like other home insulation measures, external wall insulation is a game-changer for your home’s energy efficiency.
This is how external wall insulation benefits your home:
- Energy Bill Savings: External wall insulation can impressively save a UK detached home up to £550 on its annual energy bills. Thus, you can experience high savings for years to come.
- Reduced Carbon Emissions: Despite significant savings, external wall insulation reduces your home’s heat loss. And it lowers your home’s CO2 emissions by up to 1.5 tons.
- Increased Home Comfort: External wall insulation assists in decreasing inner wetness, dampness, and draft. As a result, your home has much less chance of supporting mould growth, a key driver of lung illnesses.
- Higher property value: External wall insulation will help raise your home’s Energy Performance Certificate (EPC) score, making it far more attractive to prospective buyers or renters in the housing market.
With all essential features, insulating external walls is a home efficiency upgrade that can help you save money and the planet with one investment.
Final Thoughts
The government’s Energy Company Obligation (ECO) Scheme and GBIS give free external wall insulation grants. External wall insulation offers a waterproof layer to protect your bricks and improve sound absorption. And it helps avoid damping problems.
The insulation material is fitted to the outside of a building. So it won’t reduce the floor area and can be put in with minimal inconvenience. It will also freshen the look of your walls and increase the property’s value. And it results in significant savings on heating bills.
FAQs
Yes, you can get help for external wall insulation if you meet the GBIS or the ECO4 scheme’s eligibility criteria. Generally, they have the same process. However, it may differ if you are a homeowner, landlord, or tenant.
Yes, through schemes like LA Flex, the local councils provide funding to insulate your external walls. Even if you do not meet the criteria through ECO4 or GBIS schemes, you should still take your chances by contacting your local authority council.
Yes. Each devolved government has its own scheme; here are some of them:
- Scotland: Home Energy Scotland Grants & Loans
- Wales: Nest Scheme
- Northern Ireland: Affordable Warmth Scheme
So, if you do not qualify directly, regional government grants can still be a really beneficial option.
You need to make sure you meet all the eligibility requirements, have all the paperwork prepared, and select the safe gas (for ECO4) or MCS-accredited (for GBIS) installer. Confirm there are any additional permissions required by the local planning authority.
Schemes like ECO4 usually cover all of the costs related to insulating your property or external walls in particular. While through GBIS you might need to pay the partial charges, for example, any additional repairs that occur during the installation.
A study by the UK Government’s Department of Energy and Climate Change found that improving a property’s energy efficiency through external wall insulation can increase its value by up to 38%.
External wall insulation includes adding a layer of insulation material to the wall. And then covering it with a particular type of finish (plasterwork) or coating. The finish can be smooth, painted, tiled, panelled, pebble-dashed, or finished with brick slips.
