Loft InsulationInstallers

Rafter insulation in Coleraine

For rafter insulation in Coleraine, tell us a little about the loft and we will arrange a free survey and a fixed written quote.

We cover postcodes including BT52 and BT55, inside the Causeway Coast and Glens council area.

Guide price £1,645 to £2,595 Coleraine, County Londonderry
Insulation boards fitted between roof rafters

Where we work around Coleraine

Coleraine is about 27 miles from Derry/Londonderry as the crow flies.

Other towns close by include Portstewart and Limavady.

Postcode districtsBT52, BT55
Council areaCauseway Coast and Glens
County or areaCounty Londonderry

What is rafter insulation?

Because the whole roof slope, the gables and the party walls now have to be insulated, this costs much more than insulating the floor and saves less heat for the money. We check the roof underlay first: a breathable membrane and a felt with no ventilation gap need different build-ups to avoid condensation. More about rafter insulation.

  • Insulated plasterboard lining where specified
  • Rigid insulation between the rafters, joints taped
  • Build-up designed for your type of roof underlay

Why book with us in Coleraine

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.

No pressure selling

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

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.

How much does rafter insulation cost in Coleraine?

£1,645 to £2,595About 30 m² of roof slope. 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 rafter insulation in Coleraine

How soon can you visit a home in Coleraine?

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 take on jobs outside Coleraine?

Yes. We also work in Portstewart and Limavady and elsewhere in County Londonderry.

Do you cover all of BT52?

Yes, we cover the BT52 postcode district and the districts around Coleraine.

Will it cause condensation?

It can if the build-up is wrong for the roof. Old bitumen felt needs a ventilation gap behind the insulation; a modern breathable membrane may not. We check before we design it.

Is insulating between the rafters better than the loft floor?

Not for saving energy alone. Insulating the floor heats less space and costs far less. Rafter insulation is the right answer when the loft itself needs to be warm.

Rafter insulation in other towns

Other loft work in Coleraine

Find out what your loft needs

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