Flat Roofing Contractors in County Antrim

County Antrim at a glance

Largest towns: Lisburn, Newtownabbey, Carrickfergus, Ballymena
Postcode areas: BT
Building control: Lisburn and Castlereagh City Council, Antrim and Newtownabbey Borough Council, Mid and East Antrim Borough Council and 1 other council
Neighbouring areas: Belfast · County Down · County Armagh · County Londonderry
Guide price region: Northern Ireland (−12% on West Midlands rates)

Which towns in County Antrim do we cover?

8 towns and cities have their own page; we cover everywhere in between too.

What does a flat roof cost in County Antrim?

Guide prices at Northern Ireland rates, including VAT. The fixed price comes after a survey.

Job	Guide price inc VAT
Upstand or flashing repair	£220–£570
Extension (20 m²), EPDM, insulation + 1 rooflight upstand	£2,650–£4,600
Condition survey and leak investigation	£130–£260
Balcony (12 m²), liquid-applied, scaffold	£1,650–£2,850
Porch or bay (4 m²), EPDM	£650–£1,100
Dormer (8 m²), GRP, scaffold	£1,250–£2,350

Which flat roofs are common in County Antrim?

The climate is part of the brief. Northern Ireland averages roughly 1,150 mm of rain a year, spread over many wet days, so a roof that sheds water quickly to clear outlets lasts far longer than one that holds puddles. Across County Antrim, flat roofs are typically found on newer estates where the first extension roofs are now being replaced, 1930s semis with flat-roofed garages and kitchen extensions and bungalows with flat-roofed side extensions and dormers. Approximate 1991–2020 regional averages based on Met Office data.

Which flat roof jobs do we take on in County Antrim?

Green and sedum roofs

Homeowners in County Antrim building a new extension may find a green roof can help with a planning application, as some councils encourage them for biodiversity and slower rainwater run-off. It is worth raising early with your designer, before the roof structure is drawn up, so the joists can be sized for the extra weight.

Dormer roofs

If your dormer in County Antrim was added years ago with a basic felt roof and little insulation, it will tend to fail at the edges first, and they leave the loft room cold in winter and hot in summer. A warm-roof replacement deals with both problems at once.

Torch-on felt roofing

Torch-on felt suits property owners in County Antrim who want a dependable, layered roof without paying the top price per square metre. With two or three bonded layers, a single small defect in one sheet need not lead to a leak, which is a real advantage on larger roofs that are hard to inspect often.

Building control in Northern Ireland

In Northern Ireland, Technical Booklet F1 sets roof insulation at 0.18 W/m²K when a roof over a heated room is renovated or newly built, where that's feasible. The district council's building control should be contacted before work starts, and we prepare the details it asks for. More on the rules.

Which services do we offer in County Antrim?

Flat roofing in County Antrim: questions

Which roofing systems do you fit in County Antrim?

EPDM rubber, GRP fibreglass, torch-on felt, liquid-applied and single-ply, plus mastic asphalt repairs. The survey decides which suits your roof.

Which postcode areas do you cover in County Antrim?

All of County Antrim, including the BT postcode areas. Send your full postcode and we'll confirm.

How soon can you survey a roof in County Antrim?

It depends on the time of year and where the roof is; we give you a date when you get in touch, and leaks are prioritised.

Do you work on commercial roofs in County Antrim?

Yes: shops, offices, units and blocks of flats across County Antrim, with work planned around opening hours and residents.

Flat roofing contractors in County Antrim