Hounslow at a glance
- Postcode districts
- TW3, TW5, TW4, TW7, UB2, TW14, UB1, TW13 and 2 more
- Council area
- London Borough of Hounslow
- Building approval
- London Borough of Hounslow building control, or a registered building control approver
- Guide price region
- London (+20% on West Midlands rates)
What do commercial flat roofs in Hounslow need?
A commercial re-roof in Hounslow 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.
Hounslow's flat roofs are mostly on kitchen extensions and roof terraces behind period houses, with plenty on mansard and dormer loft conversions too. The Thames basin is one of the drier parts of Britain at roughly 730 mm of rain a year, but summer heat is the bigger test here: dark membranes on south-facing roofs swing a long way in temperature.
How much does a commercial flat roof cost in Hounslow?
For Hounslow we use London rates: £15,900–£26,150 is the guide for a 100 m² commercial roof in single-ply with insulation, VAT included. 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 | £15,900–£26,150 |
| Condition survey and leak investigation | £180–£360 |
| Block of flats (150 m²), felt + insulation + scaffold | £18,650–£32,650 |
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?
- Free survey and fixed written quote for replacement and new roofs
- Warm-roof insulation upgrades and building control where needed
- CDM planning, edge protection and fragile-surface controls on every job
- 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?
- Richmond upon Thames · 3 mi
- Ealing · 4 mi
- Kingston upon Thames · 5 mi
- Hammersmith and Fulham · 6 mi
- Hillingdon · 7 mi
- Brent · 7 mi
Commercial flat roofing in Hounslow: questions
Do you cover Hounslow?
Yes. Hounslow is part of our London coverage, including postcode districts TW3, TW5, TW4, TW7, UB2, TW14 and 4 more. 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 Hounslow?
Where the work needs approval it goes to London Borough of Hounslow 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 Hounslow?
£15,900–£26,150 for a 100 m² commercial roof in single-ply with insulation, at London guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Do you need a hot works permit?
Only if torch-on felt or other naked-flame work is used, in which case the team works under your permit system with a fire watch afterwards. Where hot works are not allowed, we specify a flame-free system such as a cold-applied membrane.
Can the cost be spread over more than one budget year?
Yes. We can price a phased programme with each section shown separately, starting with the most urgent areas, so you can plan the spend while the building stays protected.