Flat Roofing Contractors in County Down

County Down at a glance

Largest towns: Bangor, Newtownards, Newry, Banbridge
Postcode areas: BT
Building control: Ards and North Down Borough Council, Newry, Mourne and Down District Council, Armagh City, Banbridge and Craigavon Borough Council and 1 other council
Neighbouring areas: Belfast · County Antrim · County Armagh · County Tyrone
Guide price region: Northern Ireland (−12% on West Midlands rates)

Which towns in County Down do we cover?

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

What does a flat roof cost in County Down?

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

Job	Guide price inc VAT
Extension (20 m²), GRP, new deck + insulation	£2,650–£4,750
Single garage (18 m²), torch-on felt	£1,350–£2,300
Single garage (18 m²), liquid-applied	£1,800–£2,850
Upstand or flashing repair	£220–£570
Extension (20 m²), EPDM, new deck + insulation	£2,450–£4,300
Commercial roof (100 m²), single-ply + insulation	£11,650–£19,150

Which flat roofs are common in County Down?

Local weather shapes the specification. 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 Down, flat roofs are typically found on newer estates where the first extension roofs are now being replaced, lock-up garage blocks on estates and 1930s semis with flat-roofed garages and kitchen extensions. Approximate 1991–2020 regional averages based on Met Office data.

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

Extension and kitchen roofs

Condensation drives some replacements in County Down. Older extension roofs were often built cold, with insulation between the joists and no reliable vapour control. Warm air from the kitchen reaches the cold deck, moisture builds up and the timber suffers. A warm roof deals with the cause, not just the stain.

Garage roofs

Water from a failing garage roof in County Down does not always stay in the garage. On an attached garage it can run down the house wall or track under the flashing, and a blocked or broken gutter can spill onto the drive or a neighbour's property. Replacing the roof deals with the source.

Liquid-applied roofing

If a flat roof in County Down is ageing but still dry, firmly bonded and on a sound deck, a reinforced liquid system can be applied over it. That avoids the cost and mess of a full strip-out, provided the moisture and adhesion checks at survey show the existing roof is fit to build on.

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 Down?

Flat roofing in County Down: questions

Which roofing systems do you fit in County Down?

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

Do you work on commercial roofs in County Down?

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

Do you cover all of County Down?

Yes. We cover the whole of County Down, including Bangor, Newtownards, Newry, Banbridge. If your town isn't listed, send your postcode and we'll confirm.

How soon can you survey a roof in County Down?

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.

Flat roofing contractors in County Down