Loft insulation for flats in South Glamorgan
For loft insulation for a flat anywhere in South Glamorgan, you get a free survey and a fixed written quote.
We work in Cardiff, Barry, Penarth, Cowbridge and Llantwit Major and everywhere in between.

Where we work around South Glamorgan
We work across the Cardiff and Vale of Glamorgan council areas.
That covers the CF postcode areas.
| Councils | Cardiff and Vale of Glamorgan |
|---|---|
| Postcode areas | CF |
| Towns listed | 6 |
What is different about insulating a flat's loft?
In most leasehold flats the loft belongs to the freeholder, so the managing agent or freeholder must agree to the work. We can quote for a single flat or the whole block, and work to the managing agent's access and insurance requirements. More about loft insulation for a flat.
- Single-flat or whole-block quotes
- Fire compartment walls left intact
- Photos and a completion note for the managing agent or factor
Why book with us in South Glamorgan
Eaves kept clear
Insulation is held back from the eaves so the loft can still ventilate.
Tidy work
Dust sheets on the route in and every bit of packaging taken away.
Downlights made safe
Fire-rated covers or a clear zone around recessed lights.
Clear contact details
Your quote says who to call with questions before, during and after the work.
How much does loft insulation for a flat cost in South Glamorgan?
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).
Building regulations in Wales
Wales has its own Approved Document L. Insulation alone is not normally notified, but conversions need building control. How the rules work across the UK.
Funding in Wales
- Warm Homes Nest, run for the Welsh Government, offers free improvements to eligible low-income households.
- ECO4, the energy supplier scheme, runs until 31 December 2026 for eligible households.
- Check Nest's eligibility checker before agreeing to any funded offer.
Welsh Government: Warm Homes Nest
Rented homes
Privately rented homes in Wales fall under the same minimum energy efficiency rules as England: at least band E now, rising to band C for all tenancies in scope by 1 October 2030.
Questions about loft insulation for a flat in South Glamorgan
Can you quote for several properties in South Glamorgan?
Yes. Landlords and agents can send a list of addresses and we will survey them in as few visits as we can.
Do you cover the whole of South Glamorgan?
Yes. We cover every town and village in South Glamorgan, including Cardiff, Barry and Penarth.
Who pays for loft insulation in a block of flats?
If the loft is common parts, the freeholder usually arranges it and recovers the cost through the service charge, according to the lease.
Can I insulate the loft above my flat?
Usually yes, with the freeholder's consent. The lease will say who owns and maintains the roof space.
Loft insulation for flats in other towns
Other loft work in South Glamorgan
- Loft insulation in South Glamorgan From £495
- Landlord loft insulation in South Glamorgan From £495
- Insulated loft hatches in South Glamorgan From £245
- Room-in-roof insulation in South Glamorgan From £3,995
- Commercial roof void insulation in South Glamorgan From £9 per m²
- Spray foam removal in South Glamorgan From £1,495
