Flat RoofingContractors

Flat roof systems

GRP fibreglass roofing in Dungannon

Thinking about a GRP roof for a dormer or extension in Dungannon? The finish is rigid and tidy, with trims moulded into the roof rather than glued on. It does need a dry day and a new deck, so we survey first, explain what is involved and give you a fixed written quote with no obligation.

Finished grey GRP fibreglass flat roof with moulded trims on a single-storey extensionComputer-generated example image

Dungannon at a glance

Postcode districts
BT70, BT71
Population
about 11,935 (GeoNames)
Council area
Mid Ulster District Council
Building approval
Mid Ulster District Council building control
Nearest main town
Craigavon, about 16 miles
Guide price region
Northern Ireland (−12% on West Midlands rates)

Why choose GRP fibreglass roofing in Dungannon?

Landlords and small businesses in Dungannon often favour GRP on roofs that contractors need to access for plant, aerials or gutter clearance. The surface resists scuffs better than a soft membrane, and small damage can usually be ground back and re-laminated without disturbing the rest of the roof.

Dungannon's flat roofs are mostly on shops with flat-roofed rear stores below flats, with plenty on newer estates where the first extension roofs are now being replaced too. 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.

How much does a GRP fibreglass roof cost in Dungannon?

At Northern Ireland guide rates, a 20 m² extension roof in GRP with a new deck and insulation comes to £2,650–£4,750 including VAT. The fixed price comes after a free survey for new and replacement roofs.

JobGuide price inc VAT
Extension (20 m²), GRP, new deck + insulation£2,650–£4,750
Dormer (8 m²), GRP, scaffold£1,250–£2,350
Single garage (18 m²), GRP fibreglass£1,550–£2,850
Single garage (18 m²), EPDM rubber£1,400–£2,450
Extension (20 m²), EPDM, new deck + insulation£2,450–£4,300

How long does a GRP roof last, and is it guaranteed?

A properly laid GRP roof typically lasts 20 to 40 years. The range is wide because so much depends on the laminate being fully wetted out, the deck staying dry and stable, and the topcoat being renewed if it wears.

When GRP fails early, the cause is usually one of these:

  • resin laid in damp or cold conditions that never fully cured;
  • cracks at board joints or trims where movement was not allowed for;
  • a deck that was wet, soft or poorly fixed before laminating;
  • a thin or patchy topcoat that has weathered through.

On guarantees, manufacturer material guarantees are available on many specified GRP systems, and some need a registered build-up or an approved installer. Where registration is possible, we do it for you. Every re-roof also comes with our written workmanship guarantee, with the length set out in your quote, and you can ask about insurance-backed options. Read more in our guarantees guide.

What's included?

  • Coloured UV-stable topcoat, with anti-slip finish on request
  • Warm-roof insulation and vapour control layer where the room below is heated
  • Removal of the old covering and disposal of waste
  • New OSB3 or plywood deck, fixed at close centres

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 nearby areas do we also cover?

GRP fibreglass roofing in Dungannon: questions

Do you cover Dungannon?

Yes. Dungannon is part of our County Tyrone coverage, including postcode districts BT70, BT71. Surveys and roofs are carried out by vetted roofing teams working under S&K Property Investments and Improvement Ltd.

Who checks building regulations for a flat roof in Dungannon?

Where the work needs approval it goes to Mid Ulster District Council building control. We tell you at the survey whether your job needs it and deal with the paperwork as part of the quote.

How much does a GRP fibreglass roof cost in Dungannon?

£2,650–£4,750 for a 20 m² extension roof in GRP with a new deck and insulation, at Northern Ireland guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.

How long before a new GRP roof is fully cured?

The topcoat is usually touch-dry within hours in reasonable weather, but full cure takes longer in cold conditions. We advise keeping off the roof until the team confirms it is ready.

Does GRP smell when it is being laid?

Yes, the resin gives off a strong styrene smell while it cures. It usually fades within a day or so, and we advise keeping nearby windows closed while the team works.

Other flat roof work in Dungannon

GRP fibreglass roofing in Dungannon: get a fixed price

Free survey and a written fixed quote for replacement and new roofs. No obligation.

Call usGet a guide price