Insulation Specialists in Wales
Find verified insulation specialists across 60 Welsh towns. Every listing is cross-checked against Companies House and the credentials that matter for insulation specialist work, MCS, CHAS, TrustMark. Free to use, no sign-up.
Credentials to look for in an insulation specialist
The badges that prove an insulation specialist is qualified for the job. We confirm these before a listing earns a Verified badge.
Read the rules: Welsh Warm Homes & energy grants 2026, Nest, ECO4, MCS · Pre-hire checklist, verifying any Welsh tradesperson
Find insulation specialists near you
Browse verified insulation specialists town by town across all 60 areas of Wales.
South Wales
Common 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.