Loft InsulationInstallers

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.

Guide price £495 to £845 South Glamorgan
A block of flats with a pitched roof

Where we work around South Glamorgan

We work across the Cardiff and Vale of Glamorgan council areas.

That covers the CF postcode areas.

CouncilsCardiff and Vale of Glamorgan
Postcode areasCF
Towns listed6

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?

£495 to £845One top-floor flat, from bare joists. Free survey and a fixed written quote before any work.

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).

Work out a guide price for your loft

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

Find out what your loft needs

Free survey and a fixed written quote for installation work. Guide prices first if you prefer.