- Guide price
- £220–£540
- Repair price
- Confirmed once the leak or damage is found
- Condition survey report
- £180–£360
- Coverage
- England, Wales, Scotland, NI
London at a glance
- Largest towns
- Westminster, Camden, Islington, Haringey
- Postcode areas
- BR, CR, DA, E, EC, EN, HA, IG, KT, N
- Building control
- City of Westminster, London Borough of Camden, London Borough of Islington and 29 other councils
- Neighbouring areas
- Surrey · Hertfordshire · Buckinghamshire · Berkshire
- Guide price region
- London (+20% on West Midlands rates)
How much does an emergency leak repair cost in London?
Guide prices including VAT at London rates. We confirm the price once we've traced the leak or seen the damage.
| Job | Guide price inc VAT |
|---|---|
| Emergency temporary weatherproofing visit | £220–£540 |
| Localised patch repair | £180–£600 |
| Upstand or flashing repair | £300–£780 |
| Condition survey and leak investigation | £180–£360 |
Which flat roofs are common in London?
Flat roofs in London sit on Victorian and Edwardian terraces with flat-roofed back additions, kitchen extensions and roof terraces behind period houses and mansard and dormer loft conversions. 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. Approximate 1991–2020 regional averages based on Met Office data.
Building regulations in England
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. Renovated roofs over heated rooms are insulated to around 0.16 W/m²K where that's feasible, and new extension roofs are built to 0.15 W/m²K. In London the application goes to City of Westminster, London Borough of Camden, London Borough of Islington and 29 other councils. More on the rules.
How quickly can someone come out?
We send a team for a temporary weatherproofing visit as soon as one is available. We don't promise a set response time, because demand jumps after storms and we would rather give you an honest answer on the phone than a figure we can't keep.
When you call, we ask a few questions about the roof and the leak so we can judge how urgent it is and what the team will need. Height matters: a single-storey garage or extension can usually be reached with ladders and edge protection, while a dormer or second-floor roof may need scaffold or a tower.
Safety comes before speed. In high winds, lightning or heavy rain, a team may not be able to work on the roof safely, and the visit may need to wait until conditions ease. Your best protection in the meantime is to contain the water indoors, as above.
How long does a temporary repair last?
A temporary repair is designed to hold for days or weeks, not years. It buys time for the roof to dry and for the permanent work to be planned.
Temporary sheeting can be lifted by high winds, and a cold-weather seal on a wet surface won't bond as well as a proper repair. We recommend booking the permanent repair or replacement promptly rather than relying on the temporary fix through a season. If the temporary work moves or the leak returns, call us again.
Once the permanent work is done, how long it lasts depends on the repair and on the rest of the roof. Our lifespan guide gives typical service lives for each roof system.
Which towns in London do we cover?
- Westminster
- Camden
- Islington
- Haringey
- Hounslow
- Barnet
- Bexley
- Lambeth
- Croydon
- Havering
- Lewisham
- Redbridge
- Southwark
- Bromley
- Ealing
- Hammersmith and Fulham
- Harrow
- Kensington and Chelsea
- Barking and Dagenham
- Brent
- Greenwich
- Hillingdon
- Kingston upon Thames
- Richmond upon Thames
- Sutton
- Waltham Forest
- Enfield
- Hackney
- Newham
- Tower Hamlets
- Merton
- Wandsworth
Emergency leak repairs in London: questions
Which towns in London do you cover?
All of London. The main towns have their own pages below, and if yours isn't listed we still cover it: send your postcode and we'll confirm.
How much does an emergency leak repair cost in London?
£220–£540 for an emergency temporary weatherproofing visit, at London guide rates including VAT. We confirm the price once we've traced the leak or seen the damage.
Which council handles building control for a flat roof in London?
It depends on where the roof is: in London that's City of Westminster, London Borough of Camden, London Borough of Islington and 29 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.
Can I put a tarpaulin on my flat roof myself?
We'd advise against it. Getting onto a flat roof in bad weather is dangerous, and many roofs and rooflights are fragile. Contain the water indoors and call us instead.
Is a leaking ceiling dangerous?
It can be. A ceiling that is bulging or sagging may be holding water and could come down, so keep people out of the room beneath it. Water near light fittings or sockets is a serious electrical risk, so isolate that circuit if you can do so safely.
Why can't you give me an exact arrival time?
Because we would rather not promise a time we can't keep. Demand spikes after storms and safe working depends on the weather, so we send a team as soon as one is available and keep you updated.
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