Internal wall insulation · Cornwall
Internal wall insulation in Newquay
From Newquay to Truro, we price internal wall insulation after a measured survey — no guesswork, and no work starts until the price is agreed in writing. Where a property in Newquay is in a conservation area or the front elevation must stay unchanged, internal insulation is often the practical route.
- Free survey in TR7 and nearby
- Guide price from £75 per m² 0% VAT
- Fixed written price before work starts
Free survey in Newquay
Postcode, service and a phone number is all we need.
Part of every quote
- Loses roughly 50–100mm per insulated wall
- Insulated plasterboard, stud wall or breathable systems
- Can be done one room at a time during a renovation
- Needs careful detailing at floor joists, reveals and corners
Newquay: walls, weather and approvals
We cover Newquay and nearby Truro, St Austell and Redruth. Newquay is about 14 miles from Redruth. The South West has many stone and solid-walled cottages, exposed coastal properties and a share of post-war system-built houses, including types such as the Cornish Unit.
Parts of Cornwall fall in the higher wind-driven rain exposure bands, especially coastal and upland sites, so render specification, movement joints and detailing at cills, verges and the base of the wall matter more than usual.
We plan internal insulation in Newquay homes room by room so you keep the rest of the house usable.
- Postcode district
- TR7
- County or area
- Cornwall
- Nation
- England
- Nearby
- Truro, St Austell, Redruth, Bodmin
Approvals in England
Internal insulation rarely needs planning permission, but in England and Wales insulating or replastering more than half of a wall's area involves building control, and listed buildings need consent for internal changes that affect their character.
What are the options for internal insulation?
- Insulated plasterboard — PIR or phenolic foam bonded to plasterboard, fixed to the wall and skimmed. Thinnest option.
- Insulated stud wall — a timber or metal frame filled with insulation, with a vapour control layer and plasterboard. Takes more space but runs services easily.
- Wood fibre and lime — breathable boards finished in lime plaster, for older walls that need to manage moisture.
Internal wall insulation prices in Newquay
| Item | Guide price | Notes |
|---|---|---|
| Insulated plasterboard, supplied and skimmed | £75–£110 per m²0% VAT | |
| Insulated stud wall | £90–£130 per m²0% VAT | |
| Typical bedroom, one external wall | £1,795–£2,9950% VAT | Including making good |
Confirmed by a fixed written quote after survey. 0% VAT: installing insulation in a home is zero-rated until 31 March 2027, so these figures are the total; 5% applies from 1 April 2027.
How it works
Tell us about the property
Use the quote tool or form, or call. Photos help.
Free survey
We measure, check the walls and confirm approvals.
Fixed written quote
System, details, access, exclusions and VAT in writing.
Installation
Scheduled for suitable weather, with a clear programme.
Internal wall insulation in Newquay: questions
Can I stay in the house?
Yes, but each room is out of use while it's worked on, typically 3–5 days.
How much room space will I lose?
Usually 50–100mm on each insulated wall, depending on the system.
Is internal insulation cheaper than external?
Per m² usually yes, but the cost of moving fittings and redecorating narrows the gap on whole-house jobs.
Do you cover Newquay?
Yes — we survey and quote internal wall insulation in Newquay (TR7) and nearby Truro, St Austell and Redruth, with a fixed written price before any work starts.