Loft InsulationInstallers

Room-in-roof insulation in Carrickfergus

We fit room-in-roof insulation for homes in Carrickfergus and across County Antrim, starting with a free survey and a fixed written quote.

Jobs in BT38 are all within our normal area, in the Mid and East Antrim council area.

Guide price £3,995 to £8,995 Carrickfergus, County Antrim
An attic room being insulated

Where we work around Carrickfergus

Carrickfergus sits about 10 miles from Belfast, measured in a straight line.

Other towns close by include Newtownabbey, Larne and Belfast.

Postcode districtsBT38
Council areaMid and East Antrim
County or areaCounty Antrim

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 Carrickfergus

Clear contact details

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

Plain-English advice

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

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.

No pressure selling

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

How much does room-in-roof insulation cost in Carrickfergus?

£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 Carrickfergus

What do I need to do before you arrive in Carrickfergus?

Clear a path to the hatch and, if you can, move stored items away from the area we will be working in. Tell us about anything heavy or fragile.

How soon can you visit a home in Carrickfergus?

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.

Do you charge extra to travel to Carrickfergus?

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

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.

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.

Room-in-roof insulation in other towns

Other loft work in Carrickfergus

Find out what your loft needs

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