Cambridgeshire at a glance
- Largest towns
- Peterborough, Cambridge, Wisbech, St Neots
- Postcode areas
- CB, PE
- Building control
- Peterborough City Council, Cambridge City Council, Fenland District Council and 2 other councils
- Neighbouring areas
- Northamptonshire · Bedfordshire · Hertfordshire · Suffolk
- Guide price region
- East of England (+5% on West Midlands rates)
Which towns in Cambridgeshire do we cover?
8 towns and cities have their own page; we cover everywhere in between too.
What does a flat roof cost in Cambridgeshire?
Guide prices at East of England rates, including VAT. The fixed price comes after a survey.
| Job | Guide price inc VAT |
|---|---|
| Emergency temporary weatherproofing visit | £190–£470 |
| Extension (20 m²), EPDM, new deck + insulation | £2,950–£5,150 |
| Commercial roof (100 m²), single-ply + insulation | £13,900–£22,850 |
| Dormer (8 m²), GRP, scaffold | £1,450–£2,800 |
| Extension (20 m²), felt, new deck + insulation | £2,850–£4,900 |
| Balcony (12 m²), liquid-applied, scaffold | £2,000–£3,400 |
Which flat roofs are common in Cambridgeshire?
The climate is part of the brief. The East of England is the driest part of Britain, with parts of the Anglian region around 630 mm a year, so summer heat and UV, not rainfall, do most of the ageing on a felt roof. Across Cambridgeshire, flat roofs are typically found on shops with flat-roofed rear stores below flats, low-rise post-war blocks of flats and bungalows with flat-roofed side extensions and dormers. Approximate 1991–2020 regional averages based on Met Office data.
Which flat roof jobs do we take on in Cambridgeshire?
GRP fibreglass roofing
For a garage or extension in Cambridgeshire that doubles as a step-out space for window cleaning, GRP gives a firmer footing than a rubber membrane. With an anti-slip topcoat it handles light, occasional use, though a full terrace needs its own specification and, in many cases, planning permission.
Flat roof repairs
Flat roofs in Cambridgeshire face the same enemies as anywhere else: rain driven against walls, leaves blocking outlets, sun drying out older felt and frost opening small cracks. People tend to notice when a stain appears on a ceiling after a storm, or when water is still sitting on the roof days after rain.
Garage roofs
Garage roofs in Cambridgeshire are often replaced when the deck gives way. Chipboard decks swell and soften once they get wet, and you may see sagging between joists or feel the roof flex underfoot. Replacing the deck and covering together is usually more economical than repeated 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 Cambridgeshire?
- Liquid-applied roofing
- GRP fibreglass roofing
- EPDM rubber roofing
- Flats, HMOs and block roofs
- Edge trims, outlets and drainage
- Rooflights in flat roofs
- Flat roof repairs
- Dormer roofs
- Garage roofs
- Green and sedum roofs
- Flat roof surveys and leak tracing
- Mastic asphalt roofing
- Flat roof replacement
- Emergency leak repairs
- Extension and kitchen roofs
- Single-ply membrane roofing
- Commercial flat roofing
- Warm roof insulation upgrades
- Torch-on felt roofing
- Balconies and roof terraces
- Porch, bay and canopy roofs
Flat roofing in Cambridgeshire: questions
Who approves flat roof work in Cambridgeshire?
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.
Which roofing systems do you fit in Cambridgeshire?
EPDM rubber, GRP fibreglass, torch-on felt, liquid-applied and single-ply, plus mastic asphalt repairs. The survey decides which suits your roof.
Do you work on commercial roofs in Cambridgeshire?
Yes: shops, offices, units and blocks of flats across Cambridgeshire, with work planned around opening hours and residents.
Which postcode areas do you cover in Cambridgeshire?
All of Cambridgeshire, including the CB, PE postcode areas. Send your full postcode and we'll confirm.
