How much does an Insulation Specialist cost in Wales?
Typical costs for hiring an insulation specialist anywhere in Wales. Insulation Specialists pricing is largely consistent across the UK, so the figures below are indicative national ranges. Your actual quote depends on job size, access and materials, so always get 2–3 quotes.
Insulation Specialists in Wales: what our directory holds
Where they are: South Wales 639 · North Wales 88 · West Wales 49 · Mid Wales 4
Counted from businesses listed on besttrades.wales, not a survey of the whole market — there are insulation specialists in Wales we have not listed yet. Supply affects price: in a region with few available insulation specialists, quotes sit toward the top of the ranges below.
Insulation Specialist price guide, Wales
| Job type | Price range | Notes |
|---|---|---|
| Loft Insulation | £400 – £1000 | Top-up to 270mm |
| Cavity Wall | £500 – £1500 | |
| External Wall | £8000 – £15000 | Whole house EWI |
| Underfloor | £800 – £2500 |
Indicative national ranges, not a besttrades.wales price survey — we have not recorded a published source for these figures, so treat them as a ballpark and get 2–3 quotes. Cost data across all trades was last updated 22 September 2026. Actual quotes vary by job complexity, access and contractor.
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Frequently asked questions
How much does insulation cost?
Loft insulation is typically £400–£1,000 and cavity-wall £500–£1,500; external solid-wall insulation is £8,000–£15,000 for a whole house.
Are there grants for insulation in Wales?
Schemes like ECO4 and Nest can cover or subsidise insulation for eligible households, worth checking before you pay.
What is the best-value insulation?
Loft and cavity-wall insulation give the fastest payback; solid-wall insulation costs more but suits older stone/brick homes.