Insulation in Barry
£458 to £7,139 installed, and 42% of homes in the council area rated EPC D to G.
What insulation costs in Barry
Loft only
£458–£1,093
Saves up to £233 a year. Pays back in about 3 years.
Loft + cavity walls (most common)
£1,802–£4,298
Saves up to £478 a year. Pays back in about 6 years.
Full package
£2,994–£7,139
Saves up to £546 a year. Pays back in about 8 years.
Source: Home Energy Quotes Cost Index, costs modelled September 2026, savings at the October to December 2026 price cap. Prices are estimates and include installation and VAT. Actual costs may vary.
Barry in numbers
Published statistics for the Vale of Glamorgan council area, not our estimates.
42% of homes with an EPC in the Vale of Glamorgan council area are rated D to G, and the median energy score is 70, which is band C.
| Vale of Glamorgan council area | Figure | Source |
|---|---|---|
| Homes with an EPC rated D to G | 42% | ONS, EPCs lodged to March 2025 |
| Median EPC energy score | 70 (band C) | ONS, EPCs lodged to March 2025 |
| Households on mains gas heating only | 79.9% | Census 2021, ONS |
| Electricity network operator | National Grid Electricity Distribution (South Wales) | NESO licence area boundaries |
These are published official statistics for the Vale of Glamorgan council area, which covers Barry, not Home Energy Quotes estimates. Sources checked 6 October 2026.
Is Barry a good place for insulation?
The area’s housing stock includes a range of properties suited to insulation installations throughout Barry. Combined with Wales’s energy prices, insulation installations here may offer good value (individual results will vary).
Barry has a population of 56,605, and the area falls within the Wales region. We recommend getting at least 3 quotes to compare prices.
Find Installers in Barry
We recommend getting at least 3 quotes from qualified installers before making a decision. Check reviews, ask for local references, and make sure warranties are clearly stated in writing.
What to check before hiring an installer in Barry
- Qualifications — check the installer holds relevant qualifications and certifications for insulation before signing any contract
- Local references — ask for completed jobs in Barry or Vale of Glamorgan
- Reviews — check online reviews before committing
- Warranty — product and workmanship warranties should be clearly stated in writing
- 3 quotes minimum — we recommend comparing at least three quotes to ensure you get a fair price
Questions about insulation in Barry
How much does insulation cost in Barry?
How energy efficient are homes in Barry?
Is there a grant for insulation in Barry?
How long is the payback period in Barry?
Do I need planning permission in Barry?
How do I find a good installer in Barry?
Get quotes for your home in Barry
Up to three approved installers who cover Barry may contact you. Free, no obligation.
Barry on the map
Insulation in nearby towns
Last reviewed: . Costs are modelled estimates from the Home Energy Quotes Cost Index — see how we calculate them. Grant rates are checked against GOV.UK.