Flat Roofing Contractors in Wiltshire

Wiltshire at a glance

Largest towns: Swindon, Salisbury, Trowbridge, Chippenham
Postcode areas: BA, SN, SP
Building control: Swindon Borough Council and Wiltshire Council
Neighbouring areas: Bristol · Gloucestershire · Somerset · Dorset
Guide price region: South West (+3% on West Midlands rates)

Which towns in Wiltshire do we cover?

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

What does a flat roof cost in Wiltshire?

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

Job	Guide price inc VAT
Extension (20 m²), EPDM, new deck + insulation	£2,900–£5,050
Commercial roof (100 m²), single-ply + insulation	£13,650–£22,450
Single garage (18 m²), EPDM rubber	£1,650–£2,900
Emergency temporary weatherproofing visit	£190–£460
Balcony (12 m²), liquid-applied, scaffold	£1,950–£3,350
Extension (20 m²), EPDM, insulation + 1 rooflight upstand	£3,100–£5,400

Which flat roofs are common in Wiltshire?

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 Wiltshire, flat roofs are typically found on shops with flat-roofed rear stores below 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 Wiltshire?

Flat roof surveys and leak tracing

Businesses in Wiltshire with a flat-roofed building can't plan maintenance around guesswork. A survey sets out what needs doing now, what can wait and roughly what each item will cost, so the work can be scheduled with as little disruption as possible.

GRP fibreglass roofing

If a flat roof in Wiltshire has already been patched with fibreglass that keeps cracking, a full GRP replacement on a new, properly fixed deck often solves the problem. Cracks usually come from movement in the boards beneath, so renewing the deck and reinforcing the joints deals with the cause.

Dormer roofs

A dormer roof that has been patched several times in Wiltshire often has layers of old repairs that hide the real fault. Stripping back to the deck shows what has been going on, and lets the team rebuild the back-edge abutment properly rather than sealing over it again.

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 Wiltshire?

Flat roofing in Wiltshire: questions

Do you cover all of Wiltshire?

Yes. We cover the whole of Wiltshire, including Swindon, Salisbury, Trowbridge, Chippenham. If your town isn't listed, send your postcode and we'll confirm.

Who approves flat roof work in Wiltshire?

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 check this at the survey and handle the application as part of the job.

Do you work on commercial roofs in Wiltshire?

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

How much is a new flat roof in Wiltshire?

A typical 18 m² EPDM garage roof is £1,650–£2,900 and a 20 m² insulated GRP extension roof is £3,100–£5,550, at South West guide rates including VAT.

Flat roofing contractors in Wiltshire