GBIS insulation grant

Great British Insulation Scheme 2026

The Great British Insulation Scheme (GBIS) is open to ~8 million UK homes — the eligibility criteria are MUCH broader than ECO4. Cavity wall, loft, and room-in-roof insulation funded. Often paired with solar to maximise efficiency before fitting PV.

Funding amount

Fully funded for low-income / vulnerable households. Partial for Council Tax Bands A–D properties (£500–£2,000 contribution from household typical for cavity wall).

Eligible if

EPC rating D, E, F, or G
Council Tax Band A–D in England, A–E in Scotland & Wales
OR receiving means-tested benefits (full Group)
Owner-occupier OR private tenant with landlord agreement

Not eligible if

EPC A, B, or C (already efficient)
Properties already insulated to current standard
Council Tax Band E+ in England without benefits

Step by step

How the application works

Eligibility + EPC

We confirm CT band and EPC. Most homes built pre-1990 qualify.

Survey

Free home survey to determine which insulation measures fit (cavity wall, loft top-up, room-in-roof).

Funding application

We submit to participating supplier. Approval typically 2–3 weeks.

Install

1–3 days for cavity wall, 1 day for loft top-up.

Frequently asked

FAQs

Does GBIS cover solar?

No — GBIS funds insulation only. But fitting GBIS insulation FIRST often qualifies homes for ECO4 solar afterwards (an EPC E or D home becomes eligible for both).

How does GBIS differ from ECO4?

ECO4 is means-tested (benefits required) and covers everything including solar. GBIS is broader (Council Tax band based) but covers insulation only.

Check your eligibility

10-minute phone call to confirm. No obligation if you're not eligible. We handle the application end-to-end.

Check Eligibility Call 0800 099 6606