Loft insulation in South Glamorgan
Loft insulation, top-ups, boarding, hatches, ventilation and surveys across South Glamorgan.
Towns we cover include Cardiff, Barry, Penarth, Cowbridge and Llantwit Major.

Loft services in South Glamorgan
Insulate the loft
- Loft insulation in South Glamorgan From £495
- Loft insulation top-up in South Glamorgan From £395
- Blown loft insulation in South Glamorgan From £595
- Natural loft insulation in South Glamorgan From £995
- Rafter insulation in South Glamorgan From £1,645
- Room-in-roof insulation in South Glamorgan From £3,995
Boarding, hatches and ladders
- Loft boarding in South Glamorgan From £695
- Insulated loft hatches in South Glamorgan From £245
- Loft ladder fitting in South Glamorgan From £295
Remove and replace
- Loft insulation removal in South Glamorgan From £445
- Spray foam removal in South Glamorgan From £1,495
Ventilation and frost protection
- Loft ventilation in South Glamorgan From £245
- Loft condensation investigation in South Glamorgan From £145
- Pipe and tank lagging in South Glamorgan From £95
Surveys and funding checks
- Loft insulation survey in South Glamorgan From £95
- Thermal imaging survey in South Glamorgan From £165
- Loft insulation grants check in South Glamorgan No charge
Homes and buildings
Where we work around South Glamorgan
This takes in the Cardiff and Vale of Glamorgan council areas.
That covers the CF postcode areas.
| Councils | Cardiff and Vale of Glamorgan |
|---|---|
| Postcode areas | CF |
Loft insulation in other towns
Building regulations in Wales
Wales has its own Approved Document L under the Building Regulations 2010 as they apply in Wales. Insulating more than half of a loft counts as renovating a thermal element and must meet the Welsh energy standard. Insulation alone is not normally notified, but rafter insulation that is part of a conversion is building work that needs building control. We confirm the route for your address on the quote.
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.
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 South Glamorgan
Do you cover the whole of South Glamorgan?
Yes. We cover every town and village in South Glamorgan, including Cardiff, Barry and Penarth.
Which council covers my address in South Glamorgan?
Councils in South Glamorgan include Cardiff and Vale of Glamorgan. Your council matters for building control questions and some funding schemes.
Are your prices the same across South Glamorgan?
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 South Glamorgan?
Send the form or call us. We call back to agree a time and confirm it in writing.
