Loft InsulationInstallers

Loft insulation in Gwent

For loft insulation anywhere in Gwent, you get a free survey and a fixed written quote.

That includes Newport (Gwent), Cwmbran, Pontypool, Ebbw Vale and Caerphilly, and the villages around them.

Guide price £495 to £745 Gwent
Mineral wool loft insulation laid across the joists

Where we work around Gwent

This takes in the Blaenau Gwent, Caerphilly, Monmouthshire, Newport and Torfaen council areas.

Postcodes starting CF and NP are all inside our area.

CouncilsBlaenau Gwent, Caerphilly, Monmouthshire, Newport and Torfaen
Postcode areasCF, NP
Towns listed12

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 finished depth sits at 270 mm or more, the depth the Energy Saving Trust recommends. More about loft insulation.

  • Area under the cold water tank left clear so it cannot freeze
  • Mineral wool to 270 to 300 mm across the whole loft floor
  • Cables lifted clear of the insulation where possible

Why book with us in Gwent

Eaves kept clear

Insulation is held back from the eaves so the loft can still ventilate.

No pressure selling

You get everything in writing and decide in your own time.

Boarding done properly

Storage boards go on loft legs, never straight onto the insulation.

Downlights made safe

Fire-rated covers or a clear zone around recessed lights.

How much does loft insulation cost in Gwent?

£495 to £745Terraced house, average loft, 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). The Energy Saving Trust puts a typical professionally installed loft at about £750 from bare joists, or £600 to top up from 120 mm.

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

Questions about loft insulation in Gwent

Are your prices the same across Gwent?

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 Gwent?

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.

Does loft insulation need building control approval?

On its own it usually does not, but the work still has to meet the energy standard. The rules differ across England, Wales, Scotland and Northern Ireland, so we confirm the position for your address on the quote.

Loft insulation in other towns

Other loft work in Gwent

Find out what your loft needs

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