Flat Roofing Contractors in County Durham

County Durham at a glance

Largest towns: Darlington, Hartlepool, Stockton-on-Tees, Durham
Postcode areas: DH, DL, SR, TS
Building control: Darlington Borough Council, Hartlepool Borough Council, Stockton-on-Tees Borough Council and 1 other council
Neighbouring areas: Tyne and Wear · Northumberland · North Yorkshire · Cumbria
Guide price region: North East (−7% on West Midlands rates)

Which towns in County Durham do we cover?

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

What does a flat roof cost in County Durham?

Guide prices at North East rates, including VAT. The fixed price comes after a survey.

Job	Guide price inc VAT
Upstand or flashing repair	£230–£600
Extension (20 m²), felt, new deck + insulation	£2,500–£4,350
Extension (20 m²), EPDM, insulation + 1 rooflight upstand	£2,800–£4,850
Porch or bay (4 m²), EPDM	£700–£1,150
Condition survey and leak investigation	£140–£280
Extension (20 m²), GRP, new deck + insulation	£2,800–£5,000

Which flat roofs are common in County Durham?

Rain and wind decide how a flat roof is detailed. England averages roughly 870 mm of rain a year; the North East is drier than the west but cold and windy near the coast, so wind uplift and freeze-thaw are in the specification. Across County Durham, flat roofs are typically found on low-rise post-war blocks of flats, bungalows with flat-roofed side extensions and dormers and lock-up garage blocks on estates. Approximate 1991–2020 regional averages based on Met Office data.

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

Green and sedum roofs

If you're replacing an old flat roof in County Durham, it's worth deciding whether to add sedum at the same time. If the structure can take it, that is the ideal moment, because the waterproofing is new and the green layers won't need lifting for a long time.

Flat roof repairs

Buying or selling a property in County Durham with a tired flat roof? A surveyor's report may flag damp, blistering or ponding. A targeted repair can deal with an isolated defect, and where the roof is near the end of its life we will explain that clearly so the cost can be planned.

Flat roof replacement

Exposure matters too. Wind lifts tired edges, and repeated wetting and drying works at old joints, so roofs in exposed spots can wear faster than the same roof somewhere sheltered. Wherever your property is in County Durham, a survey tells you whether the roof has years left or needs replacing now.

Building regulations in England

Replacing more than half of a flat roof over a heated room usually counts as renovating a thermal element, so the roof is insulated to around 0.16 W/m²K where that's technically and economically feasible, and the work is notified to building control: the council or a registered building control approver, unless a registered competent person self-certifies it. A roof on a new extension is built to 0.15 W/m²K. Patch repairs, and most unheated detached garages, don't trigger the upgrade. Structural changes, or a new covering that adds 15% or more to the roof's weight, also need approval. More on the rules.

Which services do we offer in County Durham?

Flat roofing in County Durham: questions

Which postcode areas do you cover in County Durham?

All of County Durham, including the DH, DL, SR, TS postcode areas. Send your full postcode and we'll confirm.

Do you cover all of County Durham?

Yes. We cover the whole of County Durham, including Darlington, Hartlepool, Stockton-on-Tees, Durham. If your town isn't listed, send your postcode and we'll confirm.

Do you work on commercial roofs in County Durham?

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

Which roofing systems do you fit in County Durham?

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

Flat roofing contractors in County Durham