Loft insulation in West Glamorgan

Where we work around West Glamorgan

Council areas covered: Swansea and Neath Port Talbot.

Postcode areas: SA.

Councils	Swansea and Neath Port Talbot
Postcode areas	SA
Towns listed	6

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.

Mineral wool to 270 to 300 mm across the whole loft floor
Cables lifted clear of the insulation where possible
Waste packaging removed

Why book with us in West Glamorgan

We measure before we quote

Existing depth, joist spacing, wiring and the tank are checked, not guessed.

Plain-English advice

We explain what we find in plain English, and say so when nothing needs doing.

No pressure selling

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

Tank and pipes protected

Every insulation job includes a tank jacket and pipe lagging, so nothing freezes in a colder loft.

How much does loft insulation cost in West Glamorgan?

£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 West Glamorgan

Which council covers my address in West Glamorgan?

Councils in West Glamorgan include Swansea and Neath Port Talbot. Your council matters for building control questions and some funding schemes.

How do I book a survey in West Glamorgan?

Send the form or call us. We call back to agree a time and confirm it in writing.

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.

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.