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.

Where we work around Dungiven
Dungiven is about 16 miles from Derry/Londonderry as the crow flies.
We work in neighbouring Limavady too.
| Postcode districts | BT49 |
|---|---|
| Council area | Causeway Coast and Glens |
| County or area | County 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?
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.
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.
