Loft insulation in Cornwall
Loft insulation, top-ups, boarding, hatches, ventilation and surveys across Cornwall.
We work in Redruth, Falmouth, St Austell, Truro and Camborne and everywhere in between.
Loft services in Cornwall
Insulate the loft
- Loft insulation in Cornwall From £495
- Loft insulation top-up in Cornwall From £395
- Blown loft insulation in Cornwall From £595
- Natural loft insulation in Cornwall From £995
- Rafter insulation in Cornwall From £1,645
- Room-in-roof insulation in Cornwall From £3,995
Boarding, hatches and ladders
- Loft boarding in Cornwall From £695
- Insulated loft hatches in Cornwall From £245
- Loft ladder fitting in Cornwall From £295
Remove and replace
Ventilation and frost protection
- Loft ventilation in Cornwall From £245
- Loft condensation investigation in Cornwall From £145
- Pipe and tank lagging in Cornwall From £95
Surveys and funding checks
- Loft insulation survey in Cornwall From £95
- Thermal imaging survey in Cornwall From £165
- Loft insulation grants check in Cornwall No charge
Homes and buildings
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 |
Loft insulation in other towns
Building regulations in England
Insulating a loft is treated as renovating a thermal element when more than half of the ceiling area is insulated. Approved Document L sets a target U-value of 0.16 W/m²K, which is around 250 to 300 mm of mineral wool. Loft insulation on its own usually does not need a building notice, but it still has to meet that standard. Rafter insulation that forms part of a loft conversion is notifiable building work.
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.
GOV.UK: find ways to save energy in your home
Rented homes
Privately rented homes in England must have an EPC rating of at least E, and the government has confirmed that all tenancies in scope must reach band C by 1 October 2030, measured with updated EPC metrics.
The Energy Saving Trust puts a typical professionally installed loft at about £750 from bare joists, or £600 to top up from 120 mm.
Questions about loft insulation in Cornwall
Do you cover the whole of Cornwall?
Yes. We cover every town and village in Cornwall, including Redruth, Falmouth and St Austell.
Which council covers my address in Cornwall?
Councils in Cornwall include Cornwall and Isles of Scilly. Your council matters for building control questions and some funding schemes.
Can you quote for several properties in Cornwall?
Yes. Landlords and agents can send a list of addresses and we will survey them in as few visits as we can.
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.
