Richmond upon Thames at a glance
- Postcode districts
- TW1, TW2, TW10, TW11, TW9, TW12
- Council area
- London Borough of Richmond upon Thames
- Building approval
- London Borough of Richmond upon Thames building control, or a registered building control approver
- Guide price region
- London (+20% on West Midlands rates)
Why choose EPDM rubber roofing in Richmond upon Thames?
If your Richmond upon Thames roof has been patched more than once and the felt is cracking or blistering, a full replacement in EPDM can be better value than another repair. The rubber stays flexible through hot summers and freezing nights, and the replacement is the right point to bring the insulation up to standard.
In a town like Richmond upon Thames, flat roofs are commonly found on mansion blocks and purpose-built flats with large flat roofs or Victorian and Edwardian terraces with flat-roofed back additions. 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 an EPDM rubber roof cost in Richmond upon Thames?
At London guide rates, a typical 18 m² garage roof in EPDM comes to £1,900–£3,350 including VAT. The fixed price comes after a free survey for new and replacement roofs.
| Job | Guide price inc VAT |
|---|---|
| Single garage (18 m²), EPDM rubber | £1,900–£3,350 |
| Extension (20 m²), EPDM, new deck + insulation | £3,350–£5,850 |
| Porch or bay (4 m²), EPDM | £900–£1,500 |
Do I need building regulations approval to replace a roof with EPDM?
Often, yes. In England, Wales and Northern Ireland, re-covering more than half of a flat roof over a heated room usually counts as renovating a thermal element, so the roof should be insulated towards the renovation standard where that is feasible; in Scotland, the council's building standards service decides whether a building warrant is needed.
An unheated detached garage normally falls outside these rules, and a patch repair is treated differently from a full re-cover.
In practice that means a warm roof: insulation above the deck, a vapour control layer beneath it and the EPDM on top. The extra thickness lifts the finished roof, so at survey we check door thresholds, window cills, wall flashings and upstand heights, aiming for an upstand of about 150 mm above the finished surface. Where approval is needed, we deal with building control or building standards for you. The building regulations page and our warm vs cold roof guide go into more detail.
What's included?
- Deck check and replacement of soft or rotten boards
- Warm-roof insulation and vapour control layer where required
- New drip and kerb trims, outlets and upstand details
- Written workmanship guarantee, plus manufacturer guarantee registration where available
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?
- Kingston upon Thames · 3 mi
- Hounslow · 3 mi
- Ealing · 5 mi
- Wandsworth · 5 mi
- Hammersmith and Fulham · 5 mi
- Merton · 6 mi
EPDM rubber roofing in Richmond upon Thames: questions
Do you cover Richmond upon Thames?
Yes. Richmond upon Thames is part of our London coverage, including postcode districts TW1, TW2, TW10, TW11, TW9, TW12. 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 Richmond upon Thames?
Where the work needs approval it goes to London Borough of Richmond upon Thames 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 an EPDM rubber roof cost in Richmond upon Thames?
£1,900–£3,350 for a typical 18 m² garage roof in EPDM, at London guide rates including VAT. The fixed price comes after a free survey for new and replacement roofs.
Can a punctured EPDM roof be repaired?
Usually, yes. The area is cleaned and primed, then an EPDM patch or cover tape is bonded over the damage. If water has reached the deck, a survey first is sensible.
Can you put a green roof on top of EPDM?
Yes. EPDM is often used under sedum, with a protection layer, drainage and growing medium laid on top. The structure must be able to carry the extra weight, which we check before quoting.