Grants & Schemes
A squeeze on household budgets has increasingly led people to look for ways to save energy and reduce their bills. With gas and electricity prices
September 3, 2025 No Comments
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Insulating the floor in your home is a useful way to retain heat, as even if you’ve got your loft and walls insulated, up to 20% of your heating could still be lost through your floors. As with other types of insulation, you could be eligible for a free underfloor insulation grant through various funding schemes, including the Great British Insulation Scheme (GBIS) or the ECO scheme, if you meet the eligibility criteria.
Under the various schemes, low-income and low-energy efficiency households, plus those who are likely to struggle with the cost of heating their home, could benefit from a free grant which would see free underfloor insulation installed, if they qualify and if it is suitable for their home.
Modern properties tend to have concrete ground floors that can be insulated by laying insulation on top, but these are not eligible under the scheme. The funding is available generally for older type properties which are more likely to have a suspended timber floor.
If you have a basement or cellar below your property, then it is likely that you will have a suspended floor, with the floorboards resting over the joists. These types of floors usually lose heat more easily. Air bricks or ventilation bricks are another indication that you likely have a suspended floor that would benefit from underfloor insulation.
When your home is being insulated from underneath, the mineral fibre is rolled out and secured with netting that is stapled between the floor joists. Another modern alternative is the use of spray foam being applied to the underside of your floorboards.
If your house was constructed after the 1980s the likelihood is that you won’t be eligible for underfloor insulation as they are normally built with concrete floors rather than timber. You could qualify if you have a basement, cellar, or property that is built on a slope, however.
The Great British Insulation Scheme is aimed at helping low-income households, and those homes that are the least energy efficient and have an Energy Performance Certificate (EPC) rating of D or below. You can find out the EPC rating of your home through the EPC register.
GBIS will also assist those in the lowest low council tax bands, with the criteria differing across the nations, and being relevant to the following council tax bands:
You could qualify for a grant if you meet the above criteria, but only if your household hasn’t previously received government grant funding for energy efficiency improvements.
ECO scheme support is more related to being in receipt of government benefits. You could qualify if your household income is £31,000 or less, or if your property is in receipt of a qualifying benefit in order to get access to an insulation grant for free underfloor insulation. These benefits include:
As well as being in receipt of a benefit, you need to be the homeowner occupying the property and your home should be situated in England, Scotland, or Wales, and be heated by gas. If you have had your ground floor insulated previously, you could be eligible to have it updated to the latest standards, but one of our professionals can advise on this.
Any floor insulation work carried out at your property should comply with the appropriate building regulations. A measure of how quickly a material is as an insulator is the u-value. For properties in England and Wales, for example, the insulating material should have a U-value of 0.25 W/m2K.
To meet the required standard, this usually requires a minimum of 70mm of high-performance foam insulation, or 150mm of mineral wool insulation, but this will vary depending on the type of floor.
High-quality underfloor insulation fitted by professionals can cost anything between £300 and £1200, but with underfloor insulation grants, you could get it for free. Installation of underfloor insulation can result in large annual energy savings.
The estimates below are from Energy Saving Trust of average annual energy savings depending on your house type (based on fuel prices calculated from a weighted average of projected, current and recent energy price caps).
Through the ECO scheme, eligible homeowners could receive:
There are many different types of insulation available to suit any home.
There has never been a better time to take advantage of insulation funding grants
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