Loft insulation in Cornwall
We cover Cornwall for loft insulation. It starts with a free survey and a fixed written quote.
That includes Redruth, Falmouth, St Austell, Truro and Camborne, and the villages around them.
Where we work around Cornwall
We work across the Cornwall and Isles of Scilly council areas.
Postcode areas: EX, PL and TR.
| Councils | Cornwall and Isles of Scilly |
|---|---|
| Postcode areas | EX, PL, TR |
| Towns listed | 13 |
What is loft insulation?
We lay the first layer to the depth of the joists, usually 100 mm, so it fills each bay edge to edge with no gaps. The second layer goes across the joists at right angles, which covers the timber and stops it acting as a cold bridge. More about loft insulation.
- Mineral wool to 270 to 300 mm across the whole loft floor
- Waste packaging removed
- Cables lifted clear of the insulation where possible
Why book with us in Cornwall
Clear contact details
Your quote says who to call with questions before, during and after the work.
Photos of the finished loft
You see the work done without climbing the ladder.
Downlights made safe
Fire-rated covers or a clear zone around recessed lights.
Eaves kept clear
Insulation is held back from the eaves so the loft can still ventilate.
How much does loft insulation cost in Cornwall?
Installing insulation in a home is zero-rated for VAT until 31 March 2027 and 5% after that, under HMRC's rules for energy-saving materials (notice 708/6). The Energy Saving Trust puts a typical professionally installed loft at about £750 from bare joists, or £600 to top up from 120 mm.
Building regulations in England
In England, a loft insulated across more than half its area should reach a U-value of 0.16 W/m²K. Insulation alone is not usually notified to building control. How the rules work across the UK.
Funding in England
- ECO4, the energy supplier scheme, runs until 31 December 2026 for eligible households, with no supplier scheme to follow it.
- The Great British Insulation Scheme closed on 31 March 2026.
- The Warm Homes Plan, announced in January 2026, funds upgrades for low-income households, including through councils under Warm Homes: Local Grant.
- Check what is open for your address on GOV.UK before agreeing to any funded offer.
Questions about loft insulation in Cornwall
Are your prices the same across Cornwall?
Yes. Our guide prices are the same everywhere we work, and they include normal travel. Your fixed price depends on your loft, not your postcode.
How do I book a survey in Cornwall?
Send the form or call us. We call back to agree a time and confirm it in writing.
Will loft insulation make my loft colder?
Yes, and that is expected. The insulation keeps the heat in the rooms below, so the loft above runs closer to the outdoor temperature. That is why pipes and the tank are lagged as part of the job.
How long does it take to insulate a loft?
Most lofts in houses take a single day. A large bungalow loft, a loft that needs clearing first or one with awkward access can run into a second day.
