Insulation Specialists in Wales
Find verified insulation specialists across 26 Welsh towns. Every listing is cross-checked against Companies House and Google Business Profile. We do not verify trade-body membership — ask the business for its number and check it on the issuing body's register. Free to use, no sign-up.
Credentials to look for in an insulation specialist
The credentials worth asking an insulation specialist about. We do not verify these ourselves — check the number on the issuing body's own register.
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 26 Welsh towns.
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.