Where we work around Llangefni

Llangefni is about 8 miles from Bangor (Gwynedd) as the crow flies.

Nearby, we also cover Bangor (Gwynedd), Caernarfon and Holyhead.

Postcode districts	LL77, LL60
Council area	Isle of Anglesey
County or area	Gwynedd

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 second layer goes across the joists at right angles, which covers the timber and stops it acting as a cold bridge. More about loft insulation.

Mineral wool to 270 to 300 mm across the whole loft floor
Eaves kept clear, with ventilation trays where air could be blocked
Tank jacket and pipe lagging in the loft

Why book with us in Llangefni

Plain-English advice

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

Downlights made safe

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

Boarding done properly

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

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 Llangefni?

£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).

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.

Questions about loft insulation in Llangefni

Do you charge extra to travel to Llangefni?

Not normally. Our guide prices include normal travel to Llangefni. If an address needs a ferry or an unusually long journey, we tell you the cost before you book.

Can a landlord in Llangefni book work for a tenanted house?

Yes. We can arrange access with the tenant directly and send you photos once the work is finished.

Will I get a written quote for work in Llangefni?

Yes. Every quote is in writing with the work, the price and what is included, so you can compare it properly.

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.

Loft insulation in Llangefni