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Underfloor Insulation Grants
Take advantage of underfloor insulation grants while they are available in the UK. Underfloor insulation is one of the most cost effective ways to improve the comfort of your home while reducing energy bills. Cold floors can make a room feel draughty, especially in the winter, but by insulating your floors, you can keep your living spaces warmer, more energy efficient, and less expensive to heat. At Cucumber Eco, we help landlords and tenants access fully funded underfloor insulation through the ECO4 scheme. We handle everything, from eligibility checks to professional installation at no cost to you.
We’ve helped countless homes stay warm and save money, making energy upgrades accessible to everyone, regardless of budget.
Underfloor insulation works by filling gaps in the flooring, preventing heat from escaping and reducing cold spots in your home. It’s particularly effective in older homes with suspended timber floors, where draughts and cold air can be a constant issue. With minimal disruption and no upfront cost, it’s an upgrade that pays for itself in savings on energy bills.
Upgrading your underfloor insulation is simple and stress free, with no hidden charges:
- Fast Eligibility Check
- Free Property Survey from Our Experts
- Professional Installation at No Cost to You
What is underfloor insulation?
Underfloor insulation involves fitting insulating material beneath your ground floor to reduce heat loss through the floorboards. It helps to keep your home warmer, prevents draughts, and can significantly cut your heating bills.
Can I get underfloor insulation for free?
Yes. Many households qualify for underfloor insulation grants through the government’s ECO4 scheme, which provides funding for energy-saving home improvements. In most cases, the full cost is covered, though occasionally a small contribution may be required.
Who qualifies for underfloor insulation grants?
You may be eligible if:
You receive means-tested benefits such as Universal Credit or Pension Credit, or you are referred by your local council under ECO Flex.
Your property has an EPC rating of D–G.
Your home has a suspended timber floor or accessible void space beneath the floor.
How does underfloor insulation help reduce bills?
Up to 15% of a home’s heat can be lost through the floor. Proper insulation stops warm air escaping and cold air entering, meaning your heating system runs less often. This can lead to substantial energy savings and improved comfort throughout the year.
How is underfloor insulation installed?
Installers fit insulation beneath your floorboards, usually from a crawl space or cellar. The material is secured between the joists and covered with a protective membrane. Work is typically completed within a day and causes very little disruption.
What properties are suitable?
Underfloor insulation grants apply mainly to homes with suspended timber floors. Most houses built before the 1980s are suitable. Homes with solid concrete floors are not eligible for this specific measure but may qualify for other insulation upgrades.
Does the work come with a guarantee?
Yes. ECO4 requires all installations to be carried out by TrustMark-registered installers following PAS 2030/2035 standards. Underfloor insulation usually comes with a 25-year guarantee, ensuring long-term performance and peace of mind.
Can I combine underfloor insulation with other improvements?
Yes. Under the ECO4 scheme, underfloor insulation can be installed alongside other funded measures such as loft insulation, wall insulation, new heating systems, or renewable upgrades like solar panels.
Are there other schemes offering underfloor insulation grants?
ECO4 is currently the main national route for free underfloor insulation. The Great British Insulation Scheme (GBIS) also supports insulation measures but has different eligibility rules, based on Council Tax bands rather than income.
How do I apply?
Contact us today by applying online. We will check your eligibility, arrange a free home survey, and take care of all the grant paperwork so you can have your new underfloor insulation fitted at no cost.