Free Loft Insulation — The Easiest Energy Upgrade
Loft insulation is the single most cost-effective way to reduce your energy bills. A quarter of your home's heat escapes through an uninsulated roof. Through ECO4 — and through LA Flex or the Warm Homes: Local Grant if you don't claim benefits — you can get loft insulation installed for free.
How Much Can You Save?
- Detached house: up to £590/year
- Semi-detached: up to £390/year
- Mid-terrace: up to £210/year
- Bungalow: up to £310/year
Funded insulation you can get now
GBIS closed on 31 March 2026 and ECO4 ends on 31 December 2026. The main route to fully funded insulation now is the Warm Homes: Local Grant.
- Warm Homes: Local Grant (England) — insulation, heat pumps and solar panels for privately owned or privately rented homes rated EPC D–G, through councils taking part, if household income is £36,000 or less, someone gets a qualifying means-tested benefit, or you live in one of the most deprived postcodes. Owner-occupiers can have the work fully funded; tenants pay nothing, and a landlord gets one home fully funded, then pays 50% from the second. It runs to March 2028. Apply free on GOV.UK; your council usually contacts you within 10 working days. How it works.
- In Scotland or Wales? — the Warm Homes: Local Grant is England only. In Scotland, Warmer Homes Scotland funds insulation and heating (Home Energy Scotland, 0808 808 2282); in Wales, Nest does the same for free if you get a means-tested benefit such as Universal Credit or Pension Credit, or have a low income, and your home is rated EPC E or below, or D with certain health conditions (0808 808 2244).
- ECO4, while it lasts — ECO4 can still fund work where a local installer has capacity, but only until 31 December 2026, and the work has to be finished, not just booked. There are no new targets and no ECO5. What replaces ECO4.
- Paying yourself? — Insulation, heat pumps and solar panels installed in your home carry 0% VAT until 31 March 2027 (5% after that). Installers quote the cost you pay.
Sources, checked 10 October 2026: GOV.UK Warm Homes: Local Grant, GOV.UK Boiler Upgrade Scheme, SI 2026/390, Ofgem ECO, HMRC VAT Notice 708/6, GOV.UK Warm Home Discount, Home Energy Scotland, gov.wales Nest.
Do I Need Loft Insulation?
Government guidelines recommend 270mm of loft insulation. If yours is less than 100mm (about 4 inches) — or if you have none at all — you almost certainly qualify for a free top-up or full installation.
Is your loft already a room? If it has been converted into a bedroom, office or dormer room, there is no open joist floor to lay insulation on, so a loft top-up does not apply. The sloping ceilings, stud walls and eaves voids are insulated instead — see room-in-roof insulation grants. Draughty suspended timber floors downstairs are a separate measure again: see underfloor insulation grants.
How It's Installed
Loft insulation rolls are laid between and over the joists in your loft space. The process:
- Takes 2-4 hours
- Installers access via your loft hatch
- No disruption to the rooms below
- Existing insulation is topped up, not removed
Converting your loft instead? That's a different job — a loft conversion turns the space into a room and isn't covered by insulation grants. See what councils actually fund for loft conversions.
Who Qualifies?
ECO4: Qualifying benefits + EPC D or below
No benefits? Check LA Flex and the Warm Homes: Local Grant — your council sets the criteria (income or vulnerability to cold), no benefits needed.
These routes cover the full cost. You may still qualify without benefits via LA Flex. Check your eligibility now.
Free loft insulation for pensioners
There is no loft insulation grant you qualify for simply by reaching State Pension age. The State Pension on its own is not a qualifying benefit for any of the schemes, which is the single most common misunderstanding on this subject. What does qualify is Pension Credit. It is an eligible benefit for ECO4 until 31 December 2026, and it is one of the six benefits that qualify for the Warm Homes: Local Grant — guarantee credit or savings credit — until March 2028. If you are not sure whether you are entitled to Pension Credit, check that first on GOV.UK: it is the gateway benefit for both schemes.
If you are not entitled to Pension Credit, three routes still work. In England, the Warm Homes: Local Grant funds loft insulation in full where gross household income is under £36,000 a year, or where your postcode falls in the most income-deprived fifth of the country (IMD deciles 1–2). Separately, while ECO4 runs, your council can issue an LA Flex declaration on grounds such as a health condition made worse by a cold home. Nobody is guaranteed a grant, and the home still has to be rated EPC D to G.
Our guide to energy grants for pensioners sets out every scheme an older household can use, and boiler grants for pensioners not on benefits covers the heating side of the same question.
Can you get free loft insulation if you're not on benefits?
In England, often yes. The Warm Homes: Local Grant does not require a benefit claim at all: you qualify on gross household income under £36,000 a year, or on a postcode in the most income-deprived fifth of England. The home has to be EPC D to G, and you have to be an owner-occupier or a private tenant with your landlord's consent. It is delivered by councils through their own appointed installers rather than on the open market, so availability is postcode-by-postcode — not every council joined. The income route is explained in full on our Warm Homes income limit page.
While ECO4 runs to 31 December 2026, an LA Flex declaration from your council is the other no-benefits route, and it applies across Great Britain rather than England only. In Scotland, Warmer Homes Scotland is the national route; in Wales, it is Nest.
And if none of those fit, loft insulation is the one measure worth simply buying. Against the figures in the free-versus-paid table further down this page — £500–£1,500 to have it done privately, around £590 a year saved — it pays for itself in one to three years, which is faster than any other insulation measure. Everything else that is currently funded is listed on our insulation grants hub.
Government grants for loft insulation
Three government-backed schemes currently fund loft insulation, each with different criteria and deadlines:
| Scheme | Who it's for | Deadline |
|---|---|---|
| ECO4 | Households on qualifying benefits in EPC D–G homes | 31 December 2026 |
| LA Flex | No benefits needed — your council sets criteria (income or vulnerability to cold) | Runs alongside ECO4 |
| Warm Homes: Local Grant | Lower-income households in England, delivered by councils | April 2025 – March 2028 |
All three can fully fund loft insulation for eligible households (an ECO4 installer may ask for a top-up). If you're not sure which route fits, the eligibility checker covers all of them in one check.
Don't Wait
ECO4 runs until 31 December 2026, and the Warm Homes: Local Grant runs to March 2028. Loft insulation is quick to install and provides immediate savings from your next energy bill.