Flat Roofing Contractors in Dorset

Dorset at a glance

Largest towns: Bournemouth, Poole, Weymouth, Christchurch
Postcode areas: BH, DT
Building control: BCP Council and Dorset Council
Neighbouring areas: Wiltshire · Hampshire · Somerset · Bristol
Guide price region: South West (+3% on West Midlands rates)

Which towns in Dorset do we cover?

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

What does a flat roof cost in Dorset?

Guide prices at South West rates, including VAT. The fixed price comes after a survey.

Job	Guide price inc VAT
Dormer (8 m²), GRP, scaffold	£1,450–£2,750
Commercial roof (100 m²), single-ply + insulation	£13,650–£22,450
Extension (20 m²), EPDM, new deck + insulation	£2,900–£5,050
Extension (20 m²), GRP, new deck + insulation	£3,100–£5,550
Single garage (18 m²), GRP fibreglass	£1,850–£3,350
Emergency temporary weatherproofing visit	£190–£460

Which flat roofs are common in Dorset?

The climate is part of the brief. The South West averages roughly 1,260 mm of rain a year and many roofs face wind off the Atlantic, so we specify fixings and edge details for wind uplift as well as drainage. Across Dorset, flat roofs are typically found on low-rise post-war blocks of flats, terraced streets with flat-roofed rear kitchens and bathrooms and 1960s and 1970s link-detached houses with flat-roofed garages and porches. Approximate 1991–2020 regional averages based on Met Office data.

Which flat roof jobs do we take on in Dorset?

Torch-on felt roofing

Torch-on felt suits property owners in Dorset 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.

Dormer roofs

High, exposed dormers in Dorset take the full force of the wind and rain. Edge trims loosen, flashings lift and the felt at the drip edge cracks. Once the faults spread around the perimeter, a new roof with fresh trims usually lasts far longer than another round of repairs.

Commercial flat roofing

Safety planning matters on commercial sites in Dorset. Every job is planned under CDM, with a method statement, edge protection and covers over rooflights and fragile areas. If asbestos is found, a licensed specialist surveys and removes it before our work starts, so nobody is put at risk.

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 Dorset?

Flat roofing in Dorset: questions

Do you work on commercial roofs in Dorset?

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

Do you cover all of Dorset?

Yes. We cover the whole of Dorset, including Bournemouth, Poole, Weymouth, Christchurch. If your town isn't listed, send your postcode and we'll confirm.

Which council handles building control for a flat roof in Dorset?

It depends on where the roof is: in Dorset that's BCP Council and Dorset Council. Replacing more than half of a roof over a heated room usually counts as renovating a thermal element, so it is insulated to current standards and notified to building control. We confirm which applies at the survey.

Which postcode areas do you cover in Dorset?

All of Dorset, including the BH, DT postcode areas. Send your full postcode and we'll confirm.

Flat roofing contractors in Dorset