Room-in-roof insulation in Bangor, Gwynedd

Homes in Bangor, Gwynedd get the same service as everywhere else we work in Gwynedd. For room-in-roof insulation, that means a free survey and a fixed written quote.

We cover the LL59 and LL57 postcode districts, which fall under Isle of Anglesey council.

Guide price £3,995 to £8,995 Bangor, Gwynedd

Where we work around Bangor, Gwynedd

Nearby, we also cover Llangefni and Caernarfon.

Postcode districts	LL59, LL57
Council area	Isle of Anglesey
County or area	Gwynedd

What is room-in-roof insulation?

Most rooms-in-roof are reached by stripping the existing plasterboard on the slopes, fitting insulation between and over the rafters, and re-boarding. Where there is access behind the knee walls, we insulate the eaves voids and the floor behind them too. More about room-in-roof insulation.

Eaves voids insulated where accessible
Insulation to slopes, knee walls and flat ceiling
Boarding and finishing as agreed on the quote

Why book with us in Bangor, Gwynedd

Clear contact details

Your quote says who to call with questions before, during and after the work.

We measure before we quote

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

Photos of the finished loft

You see the work done without climbing the ladder.

Plain-English advice

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

How much does room-in-roof insulation cost in Bangor, Gwynedd?

£3,995 to £8,995One room-in-roof, depending on size and finish. Free survey and a fixed written quote before any work.

Part of this work can be zero-rated as energy-saving materials until 31 March 2027, and part is standard-rated. If VAT applies, your quote shows which is which.

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 room-in-roof insulation in Bangor, Gwynedd

Will I get a written quote for work in Bangor, Gwynedd?

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

How soon can you visit a home in Bangor, Gwynedd?

We call you back to agree a time that suits you, and confirm the date in writing. Availability changes week to week, so we will give you the earliest slot we have.

Can a landlord in Bangor, Gwynedd 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 the room get smaller?

Slightly. Insulated plasterboard over the rafters takes a few centimetres off each slope.

How long does room-in-roof insulation take?

Usually three to six working days for one room, depending on how much is stripped and how it is finished.