Devon at a glance
Which towns in Devon do we cover?
11 towns and cities have their own page; we cover everywhere in between too.
What does a flat roof cost in Devon?
Guide prices at South West rates, including VAT. The fixed price comes after a survey.
| Job | Guide price inc VAT |
|---|---|
| Extension (20 m²), EPDM, insulation + 1 rooflight upstand | £3,100–£5,400 |
| Balcony (12 m²), liquid-applied, scaffold | £1,950–£3,350 |
| Extension (20 m²), EPDM, new deck + insulation | £2,900–£5,050 |
| Porch or bay (4 m²), EPDM | £750–£1,300 |
| Single garage (18 m²), liquid-applied | £2,100–£3,350 |
| Extension (20 m²), GRP, new deck + insulation | £3,100–£5,550 |
Which flat roofs are common in Devon?
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 Devon, flat roofs are typically found on newer estates where the first extension roofs are now being replaced, 1960s and 1970s link-detached houses with flat-roofed garages and porches and shops with flat-roofed rear stores below flats. Approximate 1991–2020 regional averages based on Met Office data.
Which flat roof jobs do we take on in Devon?
Extension and kitchen roofs
Rooflights fitted after the roof was built are a frequent source of trouble in Devon extensions. If the kerb was not formed properly or the membrane was simply sealed around the frame, leaks follow. Replacing the roof is the chance to rebuild every upstand to a proper standard.
Green and sedum roofs
Garden rooms and outbuildings in Devon, as elsewhere, often have small flat roofs that are seen from the house and garden. A sedum finish helps them blend in, provided the structure is strong enough and the roof underneath is built properly.
Dormer roofs
High, exposed dormers in Devon 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.
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 Devon?
- Warm roof insulation upgrades
- Porch, bay and canopy roofs
- Edge trims, outlets and drainage
- Dormer roofs
- Commercial flat roofing
- Flat roof surveys and leak tracing
- Flat roof repairs
- EPDM rubber roofing
- GRP fibreglass roofing
- Rooflights in flat roofs
- Flat roof replacement
- Single-ply membrane roofing
- Extension and kitchen roofs
- Liquid-applied roofing
- Mastic asphalt roofing
- Emergency leak repairs
- Balconies and roof terraces
- Torch-on felt roofing
- Flats, HMOs and block roofs
- Green and sedum roofs
- Garage roofs
Flat roofing in Devon: questions
Which council handles building control for a flat roof in Devon?
It depends on where the roof is: in Devon that's Plymouth City Council, Exeter City Council, Torbay Council and 5 other councils. 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.
Do you work on commercial roofs in Devon?
Yes: shops, offices, units and blocks of flats across Devon, with work planned around opening hours and residents.
Who approves flat roof work in Devon?
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 cover all of Devon?
Yes. We cover the whole of Devon, including Plymouth, Exeter, Paignton, Torquay. If your town isn't listed, send your postcode and we'll confirm.