Flat roof insulation grants to save on energy bills
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You could claim £1000s in free grants to insulate your home and cut your energy bills with flat roof insulation. This guide explains what flat roof insulation is, the methods available, who can qualify for grants, and how Energy Saving Grants can help you through the application and installation process.
What flat roof insulation is
Flat roof insulation helps keep heat inside your home when you don’t have a loft or traditional roof space. A roof is classed as flat if it has a pitch of less than 10 degrees. Without insulation, these roofs lose large amounts of heat, which means higher bills and colder rooms.
Insulating a flat roof reduces heat loss and condensation. It also lowers heating costs. Current UK Building Regulations require a target U-value of 0.15 W/m²K for new flat roofs and new roofs on existing properties. Meeting this standard is often not possible without proper insulation.
Check Your Eligibility
There are two main installation methods: warm roof and cold roof insulation. The right choice depends on the building type and structure. Each method has its own benefits and is suited to different property needs. This leads directly into why more homeowners are installing insulation today.
Why insulation makes a difference
Insulation directly affects how much heat your home keeps and how much you spend on energy. The table below shows the clear benefits of insulating your property compared to leaving it uninsulated.
| With insulation | Without insulation |
| Minimises heat loss from the home | Around 25% of heat lost through the roof |
| 100% free insulation grant available | No grant support, full cost burden on homeowner |
| Lower heating bills as less energy is wasted | Much higher heating bills due to wasted heat |
| Improved comfort with warmer, consistent indoor temperatures | Cold spots and drafts make the home less comfortable |
| Reduced carbon footprint and environmental impact | Higher carbon emissions from excess energy use |
| Options include cavity wall, loft, internal and external insulation | No protection against rising energy costs |
Types of flat roof insulation
There are two main ways to insulate a flat roof. Each method has different benefits and is suited to specific property types. Knowing the difference will help you choose the best option for your home.
Warm flat roof insulation
Warm roof insulation places the insulating boards above the joists, topped with a vapour control layer. This reduces condensation inside the roof space and is considered the best choice for the UK climate. Rigid PIR boards are often used because they are durable and strong enough to walk on, making roof checks easy. This method is the most common for homes that need long-term, effective insulation.
Cold flat roof insulation
Cold roof insulation fits between the joists with a waterproof layer on top. It is less energy efficient than the warm method, but it can work well for outbuildings or retrofit projects. Ventilation is needed to avoid damp and condensation build-up. Loft insulation rolls are normally used in this method, which is less common today but still has specific uses.
Many homeowners worry about the upfront cost of flat roof insulation, but it doesn’t have to be a financial burden. With government-backed energy grants, you could have the work done for free or at a greatly reduced cost.
Grants for flat roof insulation
You may qualify for flat roof insulation grants through the government’s Energy Company Obligation (ECO) scheme. This programme is designed to make homes warmer and cheaper to run while reducing the UK’s carbon emissions. Energy suppliers such as British Gas, E.ON, Npower, Scottish Power, SSE, and EDF are responsible for funding the grants, making it easier for households to access energy-saving improvements without the heavy upfront costs.
ECO is the latest version of the scheme and has stricter rules around who can apply. Eligibility now focuses mainly on household income and on properties with poor Energy Performance Certificate (EPC) ratings, specifically those in bands E, F, or G. This means support is directed at the homes that need it most, helping low-income families improve comfort while cutting energy bills.
See why people across the UK trust us for energy grants!
Maggie Di
Many thanks to the Energy Saving Grants team for guiding me through the entire grant qualification process up to installing new storage heaters. I am very happy with the result, they were very helpful, supportive and responsive throughout the process, I highly recommend them.
James Buckley
I’ve had a very good experience with energysavinggrants, they are very easy to contact and responsive, they were supportive and helpful throughout the whole process of survey insulation and installation of the heating which is of excellent quality, I highly recommend them, nice people.
Syed Ahmed
The company and the organisers did a fantastic job. They completed the work extremely well and very efficiently. All the employees were very respectful and considerate, the house looks great now and will enable us to be energy efficient. I would recommend this grant be available to all homes.
Who can qualify for flat roof insulation grants?
Are you interested in finding out if you could get a grant for flat roof insulation? If someone in your household receives certain benefits, you may qualify through the ECO scheme. Even if you don’t claim benefits, you could still be eligible if your household income is below £31,000 a year. This gives you the chance to enjoy the benefits of insulation without paying the full cost yourself.
The benefits that may qualify you for a grant include:
- Income-based Jobseekers Allowance (JSA)
- Income-related Employment and Support Allowance (ESA)
- Income Support (IS)
- Pension Credit Guarantee Credit
- Working Tax Credit (WTC)
- Child Tax Credit (CTC)
- Universal Credit (UC)
- Housing Benefit (eligible under ECO)
- Pension Credit Savings Credit (eligible under ECO)
Even if you don’t meet the full criteria, you might still receive a part-funded grant to cover some of the cost. It’s always worth checking your eligibility here.
How do flat roof insulation grants work?
Get support to cut heat loss and lower your energy bills.
🔎 Check eligibility
See if you qualify for government-backed funding based on your home and circumstances.
📅 Book your free survey
Arrange a no-cost property check to confirm the best insulation solution.
🏠 Insulation installed
Our Trustmark accredited installers carry out the work to approved standards. All work is supplied with an insurance-backed guarantee.
💷 Enjoy big savings
Cut your heating costs and make your home more comfortable year-round.
How Energy Saving Grants can help
At Energy Saving Grants, we specialise in helping homeowners, landlords, and tenants access government funding for insulation and other energy-saving improvements. Our team will guide you through the full application process, check your eligibility, and arrange a Trustmark accredited installer to complete the work. From start to finish, we make it simple for you to secure a grant and improve your home without the stress of handling everything on your own.
Types of insulation available
Alongside flat roof insulation, there are many other options that can make your home warmer and cheaper to run. Each type is designed to tackle heat loss in different areas of the property, giving you a complete solution for reducing energy bills.
Loft insulation
A simple and quick way to stop heat escaping through your roof space.
Cavity wall insulation
Fills the cavity space between external walls to cut down on heat loss.
External wall insulation
Added to the outside of your home to improve thermal performance and appearance.
Internal wall insulation
Insulates solid walls from the inside to keep warmth in.
Room in roof insulation
Ideal for habitable loft or attic rooms, it places insulation between rafters for warmth and comfort.
Check your eligibility today!
Not sure if you qualify for a free roof insulation grant? Simply complete our grant checker form to find out in minutes. Enter your details and discover if you can get government-backed funding to insulate your home, lower your bills, and enjoy a warmer home.
Check Your Eligibility Using Our Grant Checker
Please ensure that all information provided below is 100% accurate. Any errors in your personal information could delay or prevent you qualifying for a government funded grant
Please note that you do not necessarily need to be in receipt of tax credits or benefits as we still may be able to obtain funding for you via your Council or through other funding schemes.