Cobham at a glance
- Postcode districts
- KT11
- Population
- about 16,724 (GeoNames)
- Council area
- Elmbridge Borough Council
- Building approval
- Elmbridge Borough Council building control, or a registered building control approver
- Nearest main town
- Woking, about 6 miles
- Guide price region
- South East (+10% on West Midlands rates)
What do commercial flat roofs in Cobham need?
A commercial re-roof in Cobham has to fit around customers, staff and deliveries. We agree working hours, skip positions and access routes before we start, keep fire exits clear throughout, and choose a flame-free system where your site does not allow hot works near stock or occupied rooms.
Cobham's flat roofs are mostly on low-rise post-war blocks of flats, with plenty on terraced streets with flat-roofed rear kitchens and bathrooms too. Much of the South East sits in the drier Thames catchment at roughly 730 mm of rain a year, so the usual failures are at joints, upstands and outlets rather than from sheer volume of rain.
How much does a commercial flat roof cost in Cobham?
Guide price in Cobham: £14,550–£23,950 for a 100 m² commercial roof in single-ply with insulation, including VAT at South East rates. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Commercial roof (100 m²), single-ply + insulation | £14,550–£23,950 |
| Condition survey and leak investigation | £170–£330 |
| Block of flats (150 m²), felt + insulation + scaffold | £17,100–£29,900 |
How do you handle CDM, roof access and fragile surfaces?
Every job is planned under the Construction (Design and Management) Regulations 2015, or CDM (NI) 2016 in Northern Ireland, with a construction phase plan and a method statement for the roof.
As a commercial client you have duties under CDM too, including passing on information about the building, such as drawings, details of previous roof work and the asbestos register. Buildings put up before 2000 can contain asbestos, so we ask for the register or a refurbishment survey before pricing a strip-out. If asbestos is found, a licensed specialist surveys and removes it before we start.
Roofs and rooflights are treated as fragile until a competent person confirms otherwise. Edge protection goes up on every job, rooflights and fragile sheets are covered or fenced off, and we agree safe access before work starts: scaffold, a tower, a powered access platform or a fixed access point where one is suitable.
What's included?
- CDM planning, edge protection and fragile-surface controls on every job
- Free survey and fixed written quote for replacement and new roofs
- Written workmanship guarantee, with manufacturer guarantees registered where the system allows
- Programme planned around trading hours, deliveries and site rules
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 nearby areas do we also cover?
- Esher · 3 mi
- Weybridge · 4 mi
- Leatherhead · 4 mi
- West Molesey · 5 mi
- Sunbury-on-Thames · 5 mi
- Chertsey · 6 mi
Commercial flat roofing in Cobham: questions
Do you cover Cobham?
Yes. Cobham is part of our Surrey coverage, including postcode districts KT11. Surveys and roofs are carried out by vetted roofing teams working under S&K Property Investments and Improvement Ltd.
Who checks building regulations for a flat roof in Cobham?
Where the work needs approval it goes to Elmbridge Borough Council building control, or a registered building control approver. We tell you at the survey whether your job needs it and deal with the paperwork as part of the quote.
How much does a commercial flat roof cost in Cobham?
£14,550–£23,950 for a 100 m² commercial roof in single-ply with insulation, at South East guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Who deals with building control on a commercial re-roof?
We do, where the work needs approval. Replacing more than half of a roof over heated space usually means upgrading the insulation towards the renovation U-value where feasible, which is 0.18 W/m²K for non-domestic buildings in England.
What happens to air conditioning units and other roof plant?
Plant can often stay in place, with the new roof detailed around its supports. Where it has to be isolated and lifted, your mechanical contractor does that while we re-roof beneath it, and we agree the timing at survey stage.