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Get a Free Insulation Grant Under ECO4 or GBIS!
Get a Free Insulation Grant & Upgrade Your Home with ECO4 Scheme!
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Insulation Grant
Free insulation grants are NOW available under the ECO4 Scheme to assist eligible homes across the UK in becoming more energy-efficient. Free insulation accounts for 55% of all installations under ECO4; it is one of the most effective upgrades you can make. Even if you don't qualify under ECO4, you may benefit under the Great British Insulation Scheme (GBIS). It plans to retrofit 300,000 homes by March 2026 – with a budget of £1 billion – at no cost to you.
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What is the Free Insulation Grant under ECO4 and GBIS?
Types of Insulation Covered Under ECO4 and GBIS
Loft Insulation
Up to 25% of the heat can be lost through an uninsulated roof. Loft insulation serves as a thermal barrier, keeping the warmth in your home. Under the scheme, insulation is installed for a typical depth of 270mm – as recommended by Energy Saving Trust – that would save up to £355 (as per standard efficiency assumptions) annually on energy bills.
Cavity Wall Insulation
Uninsulated walls can lose up to 35% of the household’s heat. The majority of houses built after the 1920s have cavity walls that can be filled with mineral wool or foam insulation.
This could decrease heating costs by £300 (as per standard efficiency assumptions) annually and is capable of improving your home’s EPC rating.
Solid Wall Insulation
Older homes built before 1920 are generally of solid wall construction and tend to lose their heat almost twice as quickly as cavity wall homes. Internal and external solid wall insulation may reduce loss up to 45% of your heat loss.
External Wall Insulation (EWI)
External Wall Insulation adds a protective, insulated layer to the outside of your home, finished with a durable, weatherproof coating. It keeps your walls warmer for longer, prevents heat loss by up to 35%, and gives your property a fresh, modern appearance. EWI is mainly helpful for solid-wall or poorly insulated houses.
Internal Wall Insulation (IWI)
Internal Wall Insulation means adding insulated boards or a new stud wall to the inside of your property. It is great for homes where external insulation isn’t an option, like listed buildings or those in conservation areas. IWI retains up to 20% more heat, reducing dampness and condensation, without changing the appearance of your building from the outside
Floor and Room-in-Roof Insulation
Cold floors and converted loft rooms often show significant areas of heat loss. Under ECO4 and GBIS, the insulation methods allowed include mineral wool between the suspended timber floors. And room-in-roof insulation is fitted beneath sloping ceilings to retain warmth within a loft conversion.
Loft Insulation
Cavity Wall Insulation
Solid Wall Insulation
Older homes built before 1920 are generally of solid wall construction and tend to lose their heat almost twice as quickly as cavity wall homes. Internal and external solid wall insulation may reduce loss up to 45% of your heat loss.
External Wall Insulation (EWI)
Internal Wall Insulation (IWI)
Floor and Room-in-Roof Insulation
How Does Home Insulation Work?
By filling gaps in your walls, roof, and floors, it traps warm air inside and blocks draughts. Materials like mineral wool or rigid boards contain tiny air pockets that resist heat transfer, boosting energy efficiency.
The result? Your heating system works less, cutting bills by up to 40%, improving your EPC rating, and keeping your home comfortable all year round.
What Does the Free Insulation Scheme Cover?
Upon approval for the ECO4 or GBIS grant, your home could receive:
Free Loft Insulation Grants
Up to 25% of household heat loss occurs through the roof. Loft insulation keeps your home warmer for longer by preventing heat leakage.
Free Cavity Wall Insulation Grants
In homes with poor wall insulation, a cavity fill reduces heat loss by creating an insulating barrier between the outer and inner walls.
Free Solid Wall Insulation Grants
In older homes with solid walls, up to 45% of heat can escape. Applying internal or external insulation adds a protective layer, reducing heat loss and improving energy efficiency.
Free Underfloor Insulation Grants
Ground-level rooms benefit from underfloor insulation, which blocks drafts from entering, further enhancing the thermal efficiency of the property.
54% of all ECO Upgrades Are Free Insulation Installs
ECO4 has a full-home approach with loft, cavity wall, and solid wall insulation leading the way. These upgrades lock in the warmth, slash bills, and boost comfort – all completely free to eligible households.
Cavity Wall Insulation Dominates GBIS with 41% of All Installations
By April 2025, cavity wall insulation leads in the Great British Insulation Scheme with 41% of all installations, followed by loft insulation with 28%, while heating controls make up 21%.
By filling the gap between outer and inner walls, this upgrade prevents heat loss and can cut energy bills by up to 35%. Thus, helping thousands of UK homes stay warmer for less.
Winter
Keeps the warmth in, preventing heat from escaping through walls.
Summer
Blocks excessive heat, keeping your home cool
Solid Wall or Cavity Wall? Here’s How to Tell
Feature | Cavity Wall | Solid Wall |
| Build Year | Built after the 1920s. | Built before the 1920s |
| Brick Pattern | Bricks laid in a uniform pattern (all the same length) | Bricks show alternating long and short ends |
| Wall Thickness | 270mm or more (thicker) | Around 220mm (thinner) |
| Heat Loss | Better at retaining heat once insulated | Loses heat faster without insulation |
| Insulation Type | Cavity Wall Insulation (fills the gap) | Internal or External Wall Insulation needed |
How Is the GBIS Different from ECO4?
Both ECO4 and GBIS aim to make UK homes warmer and more efficient – but they target different households.
ECO4 takes a full-home approach, funding heating systems and insulation for low-income or vulnerable households with poor EPC ratings (E, F, or G).
GBIS, on the other hand, focuses on insulation-only upgrades like loft or wall insulation. It supports a wider range of homes (even middle-income households) with either full or partial funding, depending on EPC and council tax band.
How to Apply for an Insulation Grant
Applying for an insulation grant is a straightforward process. To get started, follow these steps:
Check Eligibility
Determine if you qualify for any free insulation grants or specific regional grants like insulation grants Wales or free insulation Scotland.
Complete Application
Fill out the necessary forms with your details and insulation requirements.
Choose the Right Grant
Identify the type of insulation you need – loft, under floor, internal wall, or external wall.
Get Approved
Once approved, a professional installer will carry out the insulation work.
Over 3,000 UK Homes Improved by GBIS Since 2023
Since its launch in March 2023, GBIS has been transforming the energy performance of homes across the UK. It installed close to 3,500 energy-saving measures in almost 3,000 households by December 2023, significantly improving comfort and energy efficiency.
Improve Your EPC Rating with Free Insulation Grants
Your property’s energy efficiency is rated by the EPC. Improving your insulation with either an ECO4 or GBIS grant can increase your property’s Energy Efficiency Performance Certificate rating, thus pushing it up to category C and above from categories E, F, and G.
Better insulation will also mean your home meets the standards of modern energy efficiency, as less energy is required to heat or cool a property. This may make your home cheaper to run and more appealing to potential buyers.
Top Benefits of a Free Insulation Grant
- Lower Energy Bills: Proper insulation reduces heat loss by up to 65%, saving you £600–£650 (as per standard efficiency assumptions) annually on energy costs.
- Improved EPC Rating: Boosts your EPC rating and makes your home more energy-efficient, adding to its selling value.
- Smaller Carbon Footprint: With efficient insulation, you can reduce your household's CO₂ emissions by as much as 1.7 tonnes per year.
- Improved Home Comfort: It keeps your home warmer in winter and cooler in summer by maintaining a stable indoor temperature.
- Healthier Living Environment: Prevents damp, mould, and condensation, reducing risks of respiratory issues like asthma.
- Government-Funded Upgrade: All costs are fully covered under ECO4 and GBIS, meaning you pay £0 for long-term energy savings.
How Much Can You Save with a Free Home Insulation Grant?
Eligibility Criteria for ECO4 Insulation Grants
Who Qualifies for Free Insulation Grants Under the ECO4 Scheme?
- You own your home or are a private tenant.
- Your home has an EPC rating of E, F, or G.
- Your home is not insulated.
- You receive certain qualifying government benefits.
Eligible Government Benefits include:
- Income Based – Jobseekers Allowance (JSA)
- Income Related – Employment and Support Allowance (ESA)
- Income Support (IS)
- Working Tax Credit (WTC)
- Child tax credit (CTC)
- Universal Credit (UC)
- Pension Guarantee Credit
- Pension Savings Credit
Don’t Receive Benefits? You May Still Qualify for GBIS
Eligibility Criteria for ECO4 and GBIS Insulation Grants
- You must be a homeowner or private tenant in England, Scotland, or Wales.
- Your property must be in Council Tax Band A to D (or A to E in Scotland and Wales).
- The EPC rating of the home should be E, F, or G.
- You should not already have received insulation under GBIS or any other government-funded schemes.
- Households with an annual income of £20,000 or less.
Who Qualifies for the Great British Insulation Scheme (GBIS)?
Low-Income Group
- Low-income households
- EPC rating: E or below (private renters) / D or below (homeowners).
- Must receive at least one means-tested benefit such as Universal Credit, Housing Benefit, or Pension Credit.
- Includes social housing residents and pensioners vulnerable to cold homes.
General Group
- Homeowners in Council Tax Bands A–D (England) or A–E (Scotland & Wales).
- EPC rating of E or below.
- Ideal for households not on benefits but still needing insulation support.
Types of Insulation Materials You Can Get with a Free Insulation Grant
Among the types of insulation materials used to help achieve this goal of energy efficiency in houses, several of them are:
This is made from glass fibres, which are ideal for wall, ceiling, and floor insulation.
These are based on rock and slag with excellent fire resistance and soundproofing
The glass material is recycled, providing several benefits in thermal and acoustic insulation.
High-insulation polystyrene or polyurethane boards are great for walls and roofs.
This type of insulation expands into foam. It thus works best when filling in gaps and sealing around cracks.
It is eco-friendly because it uses recycled paper. It can be installed in both walls and attics.
It reflects heat and is designed to reduce thermal transfer.
Suitable substitutes for renewable resources include cotton, wool, and hemp, all of which have thermal and acoustic advantages.
Fibreglass Insulation
Mineral Wool Insulation
These are based on rock and slag with excellent fire resistance and soundproofing
Glass Mineral Wool Insulation
The glass material is recycled, providing several benefits in thermal and acoustic insulation.
Foam Board Insulation
High-insulation polystyrene or polyurethane boards are great for walls and roofs.
Spray Foam Insulation
This type of insulation expands into foam. It thus works best when filling in gaps and sealing around cracks.
Cellulose Insulation
It is eco-friendly because it uses recycled paper. It can be installed in both walls and attics.
Reflective or Radiant Barrier Insulation
It reflects heat and is designed to reduce thermal transfer.
Natural Insulation Materials
Suitable substitutes for renewable resources include cotton, wool, and hemp, all of which have thermal and acoustic advantages.
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Frequently Asked Questions
If your home has a low EPC rating and leaks heat, you may qualify for a free insulation grant under the ECO4 scheme, especially if you are on a low income.
Even if you don’t meet ECO4 criteria, the Great British Insulation Scheme (GBIS) offers another route to get your home properly insulated for free.
Through the ECO4 or GBIS schemes, many households can get fully funded loft insulation.
If your home EPC is too low, and you have heat leakage issues and have low income, you can be eligible for the insulation grant under the ECO4 scheme. Moreover, GBIS also gives opportunity to those who couldn’t get the insulation grant under the ECO4 scheme.
No, GBIS does not require people to claim any government benefits.
You can get insulation grants through the Great British Insulation Scheme (GBIS) without claiming any government benefit.
Households that are not eligible under the ECO4 scheme but come under the council tax band from A to E in Wales are eligible for loft insulation grant.
Depends on material type and size of insulation area, its cost ranges from £10 per m2 to £50 per m2.
Spray foam insulation keeps heat in the loft better than any other type. An insulation grant might be able to help you for the loft insulation with the best type of insulation.
Under the general group of the insulation grant, social housing is not eligible. However, under the low-income group, social housing is eligible with EPC/SAP rating of E, F or G.
Additionally, other domestic properties within the council tax band from A to D (including E in Scotland and Wales) are eligible. Moreover, properties within the SAP band of EPC/SAP rating from D to G where the owner is occupant is eligible. And, properties with a private renter occupant with EPC/SAP rating from D or E are eligible for home insulation grant under GBIS.
If you are in the general group, you must have a council tax band from A to D (and E in Scotland and Wales). If you fall under the low-income group, your property should have an EPC/SAP rating of D, E, F or G if the owner is living in the property. If it is privately rented, then the EPC/SAP band has to be either D or E.
Even if you are not on government benefits, you can be eligible for loft insulation grant if your property is under the council tax band of A, B, C or D (also E for Scotland and Wales).
Otherwise, a low-income group should have an EPC/SAP rating of D, E, F or G, if the owner is the occupant of the property. If it is privately rented, then the EPC/SAP rating of D or E are eligible.
The loft insulation grant saves not only your installation cost but also adds £350 on average every year to your budget by reducing your energy consumption.
If you are not eligible for the loft insulation under the ECO4 scheme, you can be eligible for the insulation under the GBIS. You don’t need to be a recipient of the government benefits. All you need is that your property should be situated within the council tax band of A, B, C, or D (also included E for Scotland and Wales).
In order to qualify for the ECO4 scheme, your property must have an EPC rating of below D. Otherwise, your home is considered as energy efficient and there is no need for a heating upgrade according to the scheme. Read more about epc rating calculator.
Yes, pensioners do qualify if their property is located in the eligible area. Under the general group, the property should be within the council tax band of A to D (including E in Scotland and Wales). And it has a EPC/SAP rating of D, E, F or G if the pensioner is the owner of the property. Otherwise, if the pensioner is the private tenant, it should have an EPC/SAP rating of D or E. Social housing is not eligible.
Under the low-income group, the property should have an EPC/SAP rating of D, E, F or G if the pensioner is the owner and living in the property. Otherwise, for private renters, the rating should be D or E. Also, social housing having EPC/SAP E, F or G are eligible under the low-income group.
Under the Great British INsulation Scheme, you can apply for loft insulation and cavity wall insulation for free.
The insulation grant helps you cover the whole or partial installation cost that may vary between £1500 to £5000 or even more depending on various factors. Moreover, you can save £350 every year in terms of reduction in your energy bills.
Testimonials What Our Customers Say
WHAT OUR CUSTOMERS SAY
I had my new boiler installed through ECO energy services on the government grant.
I highly recommend them as when they came they did a great job.
Vinci Casale, a week ago
Very good grant and installation of an air source heat pump and boiler. I would definitely recommend them, good advice and service, friendly engineers, all done quickly.
Toby Pollard 3068, a week ago
I highly recommend the government grant through Eco Energy Services.Our old boiler failed its yearly service and I responded to an advert on social media.
Keith McDonald, 3 weeks ago
I highly recommend this firm, my new boiler was fitted within 5 days of applying for it. The work was done quickly and efficiently and a small issue I had was sorted the very next day. Excellent service.
Sarah George, a week ago
I was very pleased to deal with this company and people. When I couldn't sort my paperwork out, they was constantly on the phone with me suggesting on how to sort it out and pass it to them.
Dmitrij Kleinov, 4 weeks ago
nice work in the 2 days, they workers have left floorboards up a bit in all rooms
Sampada Wagle, 4 weeks ago
Eco energy services were very efficient. The new boiler made a big difference in heating my home.
BRIAN MCFALL, 4 weeks ago
Very helpful and informative, I had a very old boiler, as a pensioner could not afford a new one, they surveyed my property and I was entitled to a Gov Grant, nice surprise, they made an excellent job.
Jeanette Lord , 2 months ago
Fantastic service from start to finish. They made everything so easy and stress free. Highly recommended.
Joanna Fagg , 2 weeks ago
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