Loft InsulationInstallers

Rafter insulation in Dungiven

We fit rafter insulation for homes in Dungiven and across County Londonderry, starting with a free survey and a fixed written quote.

We cover postcodes including BT49, in the Causeway Coast and Glens council area.

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

Where we work around Dungiven

Dungiven is about 16 miles from Derry/Londonderry as the crow flies.

We work in neighbouring Limavady too.

Postcode districtsBT49
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.

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

Why book with us in Dungiven

We measure before we quote

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

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.

Tidy work

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

How much does rafter insulation cost in Dungiven?

£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 Dungiven

Can you visit Dungiven outside working hours?

Ask about early, late or weekend appointments when you get in touch, and we will tell you honestly what we can offer.

Is loft work in Dungiven different from anywhere else?

The method is the same, but older terraces, cottages and newer estates each have their own quirks: lath ceilings, low pitches or trussed roofs. We plan for the loft we find.

Do you cover all of BT49?

Yes, we cover the BT49 postcode district and the districts around Dungiven.

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.

Can I use the loft as a bedroom after rafter insulation?

Insulation alone does not make a loft habitable. Fire escape, stairs, floor strength and headroom all come into a conversion, which needs building control.

Rafter insulation in other towns

Other loft work in Dungiven

Find out what your loft needs

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