Loft InsulationInstallers

Period home loft insulation in Belfast

We insulate lofts in older houses in Belfast and across County Antrim, starting with a free survey and a fixed written quote.

That includes addresses in BT1, BT2 and BT7, inside the Belfast City council area.

Guide price £995 to £1,495 Belfast, County Antrim
The loft of an older house with timber rafters

Where we work around Belfast

Other towns close by include Newtownabbey, Lisburn, Carrickfergus and Antrim.

Postcode districtsBT1, BT2, BT7, BT12
Council areaBelfast City
County or areaCounty Antrim

What is different about insulating an older home's loft?

We work from crawl boards spanning several joists so the ceilings are not loaded, check for loose plaster keys before anything is laid, and usually recommend vapour-open insulation such as sheep's wool or wood fibre. Unfelted slate roofs are naturally well ventilated, but they let in wind-driven rain and snow, which the insulation has to cope with. More about loft insulation for an older house.

  • Ceiling-safe working from crawl boards
  • Breathable insulation where it suits the building
  • Chimney breasts and party walls kept clear of combustibles where flues are live

Why book with us in Belfast

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.

Downlights made safe

Fire-rated covers or a clear zone around recessed lights.

We measure before we quote

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

How much does loft insulation for an older house cost in Belfast?

£995 to £1,495Terraced house, average loft, natural fibre; mineral wool, where it suits, costs less. Free survey and a fixed written quote before any work.

Installing insulation in a home is zero-rated for VAT until 31 March 2027 and 5% after that, under HMRC's rules for energy-saving materials (notice 708/6).

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 loft insulation for an older house in Belfast

Can a landlord in Belfast book work for a tenanted house?

Yes. We can arrange access with the tenant directly and send you photos once the work is finished.

Is loft work in Belfast 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 charge extra to travel to Belfast?

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

Can loft insulation damage lath-and-plaster ceilings?

It can if people kneel between joists or if the ceiling is already weak. We work from boards and check the ceiling first.

Do I need permission to insulate a listed building's loft?

Possibly. Listed building consent is needed for works that affect the building's character. Ask your council's conservation officer.

Period home loft insulation in other towns

Other loft work in Belfast

Find out what your loft needs

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