Rafter insulation in County Antrim

Where we work around County Antrim

We work across the Antrim and Newtownabbey, Mid and East Antrim, Causeway Coast and Glens, Belfast City and Lisburn and Castlereagh council areas.

Postcodes starting BT are all inside our area.

Councils	Antrim and Newtownabbey, Mid and East Antrim, Causeway Coast and Glens, Belfast City and Lisburn and Castlereagh
Postcode areas	BT
Towns listed	9

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.

Build-up designed for your type of roof underlay
Insulated plasterboard lining where specified
Vapour control layer where the design needs one

Why book with us in County Antrim

Photos of the finished loft

You see the work done without climbing the ladder.

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.

Clear contact details

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

How much does rafter insulation cost in County Antrim?

£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 County Antrim

Are your prices the same across County Antrim?

Yes. Our guide prices are the same everywhere we work, and they include normal travel. Your fixed price depends on your loft, not your postcode.

Do you cover the whole of County Antrim?

Yes. We cover every town and village in County Antrim, including Belfast, Lisburn and Newtownabbey.

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.

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.