Home Insulation in Wales
Your complete guide to home insulation costs, grants, and installers across Wales. Updated for 2026.
Quick Answer
Home Insulation in Wales cost between £300 and £2500 (average £1400). Welsh homeowners save around £280 per year, with a payback period of 6 years. £1500 grant available..
Home Insulation by Welsh Location
Browse home insulation costs, grants and installers for your area. Select your region:
South Wales 23 towns
North Wales 18 towns
Home Insulation Cost Breakdown
Here is what you can expect to pay for home insulation in Wales, depending on system size:
| System Size | Cost Range | Annual Saving | Payback |
|---|---|---|---|
| Small | £300 – £1400 | £280 | 6 years |
| Medium | £1400 – £2500 | £280 | 6 years |
| Large | £2500+ | £280 | 6 years |
All prices include installation and VAT. Actual costs depend on your property, location, and chosen installer.
Home Insulation Grants in Wales
A government grant of £1500 (ECO4) is available for eligible installations. Welsh homeowners may also qualify for the Nest scheme or Warm Homes Programme Wales.
Welsh homeowners may be eligible for:
- Nest scheme — Welsh Government-funded energy efficiency improvements for eligible households.
- Warm Homes Programme Wales — Grants for home energy upgrades including home insulation.
- ECO4 — Energy Company Obligation funding for low-income and vulnerable households.
Not sure what you qualify for? Get a free eligibility check.
Compare prices from MCS-certified installers across Wales. No obligation, completely free.
Home Insulation in Wales — FAQ
How much do home insulation cost in Wales?
Home Insulation in Wales typically cost between £300 and £2500, with an average around £1400. Prices vary by location, system size, and property type.
What grants are available for home insulation in Wales?
Yes. The £1500 (ECO4) grant is available for eligible installations. Use an MCS-certified installer to claim it. Welsh homeowners can also check the Warm Homes Programme Wales for additional funding.
How much can I save with home insulation?
Welsh homeowners typically save around £280 per year with home insulation, with a payback period of approximately 6 years. Savings depend on your energy usage and system size.
How much CO2 do home insulation save?
A typical home insulation installation saves around 0.6 of CO2 per year, making a meaningful contribution to reducing Wales's carbon emissions.
Are home insulation worth it in Wales?
Yes. With annual savings of £280, a 6-year payback period, and Welsh Government grants available, home insulation are a sound investment for most Welsh homes.