Room-in-roof insulation in County Londonderry

Homes and buildings across County Londonderry can book room-in-roof insulation, starting with a free survey and a fixed written quote.

Towns we cover include Derry/Londonderry, Coleraine, Dungiven, Limavady and Magherafelt.

Guide price £3,995 to £8,995 County Londonderry

Where we work around County Londonderry

We work across the Causeway Coast and Glens, Derry City and Strabane and Mid Ulster council areas.

That covers the BT postcode areas.

Councils	Causeway Coast and Glens, Derry City and Strabane and Mid Ulster
Postcode areas	BT
Towns listed	6

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.

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

Why book with us in County Londonderry

Tidy work

Dust sheets on the route in and every bit of packaging taken away.

Fixed written price

The price on the quote is the price you pay. It only changes if you change the job, or if we find something hidden, such as rot, and you agree the change in writing first.

Clear contact details

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

No pressure selling

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

How much does room-in-roof insulation cost in County Londonderry?

£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 Northern Ireland

Northern Ireland has its own Building Regulations, with energy guidance in Technical Booklet F1. Upgrading loft insulation may count as a thermal alteration, so check with your council's building control. How the rules work across the UK.

Questions about room-in-roof insulation in County Londonderry

Can you quote for several properties in County Londonderry?

Yes. Landlords and agents can send a list of addresses and we will survey them in as few visits as we can.

How do I book a survey in County Londonderry?

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

Will the room get smaller?

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

Can it be done without removing the plasterboard?

Sometimes the flat ceiling and eaves voids can be reached from behind. The slopes almost always need the boards off to insulate them properly.