How much does a Insulation Specialist cost in Wales?
Typical costs for hiring a 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. Ranges reflect published 2024–25 UK trade-pricing guides.
Insulation Specialists in Wales: what our directory holds
Where they are: South Wales 10
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 (2026)
| 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 |
Prices updated 2026-08-26. Actual quotes may vary by job complexity and contractor.
Need a insulation specialist in Wales?
Tell us what you need, we'll match you with available local businesses, free.
Or browse insulation specialists by town →
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.