Greater London · London and the South East
Electronic Leak Detection in Southwark
Need electronic leak detection in Southwark? We can help, with findings in writing and pictures to back them up. Weekday and weekend visits available.
- Patched roofs that still leak
- Holes left by work on the roof
- A flat roof leak that can’t be traced
What we do, step by step
Before we start, tell us why you’ve booked: a purchase, a leak, a storm, new work or simply peace of mind. That way we can focus on what matters to you. Most visits take a length of time set by the membrane area and the build-up, which we’ll explain when we quote. For a visit in Southwark, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor the property is on and how to get into the loft. On the day, the roof is looked at from the ground, from windows, from inside the roof space and from the roof where it’s safe.
- We start with what you know about the roof and the leak.
- The roof is assessed for suitability first.
- We choose a low-voltage or high-voltage method to match the roof.
- We test the roof and locate any breaches.
- A report with photographs shows where each breach is.
Preparing for the visit
- Leave side gates unlocked
- Tell us about any leaks, stains or damp patches you know of
- If it isn’t your property yet, arrange access through the agent
How to book
To arrange a survey, phone 07833 053749 or email us and tell us the address and what’s prompted the survey. You’ll know the price before anything is booked.
Advice
About our electronic leak detection in Southwark
ELD finds breaches in the membrane but not every way water gets in. Water coming through walls, copings, rooflights or plumbing won’t show on the test. If the evidence points elsewhere, we will say so. It will not show water getting in through brickwork or around frames. The report makes clear what was and wasn’t tested. You’ll also know what to check next. We survey roof terraces and balconies, flat roof membranes and liquid-applied waterproofing, and the problems we are asked to look at most are damage from equipment installers and gaps at membrane joints.
Across London, flat roofs are everywhere, from back additions and dormers to roof terraces, blocks of flats and offices. They’re covered in felt, asphalt, EPDM rubber, GRP fibreglass or single-ply membranes, each with its own weak points. In Southwark, as anywhere in London, the right approach depends on what the roof is made of. Many older flat roofs are felt or asphalt, and many newer ones EPDM rubber or GRP.
After the visit, you get a written report with photographs, sent by email. It sets out the condition of the flat roof membrane, any defects and our written recommendations.
- Location
- Southwark (SE1, SE11)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Call
- 07833 053749
- Last updated
- 27 October 2026
What affects the price in Southwark
Several things affect the price of a survey:
- Any need for thermal images or a drone flight
- The shape of the roof and its details
- How tall the building is and how easy the roof is to see
- Commercial roofs and larger buildings
What a survey costs comes down to the roof itself: its size, its height, how many sections it has and how it can be reached and seen safely. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Booking your survey
These details help when you contact us:
- Pictures from the garden or a window, if you have them
- The kind of building and roof involved
- Access details, such as a loft hatch or a shared roof
- Dates you are working to, such as exchange
Buyers should book once an offer has been accepted, so you have the findings in time to act on them before you exchange. For any other survey, just ring 07833 053749 or drop us an email when you are ready.
Flat roofs in Southwark
Inner London’s Victorian and Edwardian terraces often have Welsh slate roofs. A butterfly roof with a central valley gutter, tucked behind a parapet wall, is common on these houses. If your home in Southwark is one of them, lead flashings, party-wall upstands and shared chimney stacks are part of the picture too. Mixed in with those pitched roofs are a good many flat ones, over rear extensions, dormers, garages and shops. With Mansion House about 0.9 miles north, Southwark sits in an area with a long building history. Older homes in the wider area frequently have features worth a closer look, such as lead valleys, tall stacks and roofs that have been patched over the years.
If you look after a building such as Charles Dickens Primary School, ponding and blocked outlets on a wide flat roof are worth catching before the next wet season. For businesses in and around places such as Gabriel's Wharf, the flat roofs over shops and commercial units are worth checking before a leak, not after. For landlords with property near Elephant & Castle station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Southwark is about 0 miles north-west of London, in Greater London. We provide electronic leak detection for homeowners, landlords and businesses in Southwark. Southwark is one of the places in Greater London where we work for electronic leak detection.
All of SE1 and SE11 is covered for electronic leak detection, from the main roads to the quietest streets. We offer electronic leak detection to properties on Borough Square, Trinity Church Square and Merrick Square. Southwark is on the A300 and B240, which makes it straightforward to reach. Nearby, we also carry out electronic leak detection in Tower Hill (1 mile north-east), City of London (1 mile north), Aldgate (1 mile north-east), Bishopsgate (1 mile north-east) and Barbican Estate (1 mile north). Larger places within reach include City of Westminster (3 miles west), Kensington (5 miles west), Walthamstow (7 miles north-east), Hampstead (5 miles north-west), Ruislip (14 miles west) and Brompton (3 miles west).
Near you in Southwark
Locally, jobs take us to homes and businesses close to London School of Musical Theatre, Little Dorrit's Playground and St Mary-at-Hill. Nearby too are Ark Globe Academy (less than half a mile south-east), The BFI Reuben Library (0.9 miles north-west) and The Gladstone Arms (under half a mile north-east). For rail, the closest station is Elephant & Castle station, roughly 0.5 miles south of the centre. Well-known places in the area include Gabriel's Wharf (0.7 miles north-west) and Baynard's Castle (0.8 miles north). Not far away are Ludgate Hill and Bellenden Road Nature Garden.
For landlords and managing agents
With a portfolio of properties, you can book surveys for several addresses. To arrange surveys for several addresses, call 07833 053749 or send us an email.
A roof problem in a let property affects your tenants as well as the building. A survey helps you spot issues early and plan the work around your tenants.
Places near Southwark
What else we do in Southwark
Leave it or get it looked at?
Some flat roof leaks come from walls or details. ELD helps rule the membrane in or out, so other causes can be checked. Work on a London roof is rarely simple to arrange, with parking, neighbours and access all to think about. That’s a good reason to find problems early, while there is time to plan, rather than in a rush after a leak.
To find out what your survey will cost, phone 07833 053749 or use the contact form and let us know about the roof. We’ll confirm the figure before booking.
Why book with us
- 20+ years’ experience
- 5,000+ surveys completed
- Drone flown under a CAA Flyer ID and Operator ID
- Photos and a written report every time
Read our cost guide and two real surveys.
Useful tips for Southwark property owners
Small things make a difference, both for the survey and for the roof itself. Our tips:
- Keep outlets clear of debris
- Limit access to the roof
- Do not leave water getting in
- Find the breach before more patching
Questions about the results are welcome. We can talk you through the findings.
Ask trades working on the roof to protect the membrane when they work up there. Have the roof looked at after other work.
Common questions in Southwark
Can parking be tricky for a visit in Southwark?
Sometimes, yes. If Southwark has controlled parking where you are, a visitor permit is the easiest answer, and a driveway is even better.
Is my home in Southwark listed or in a conservation area?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. The answer matters most when a change of material is on the cards.
Do you climb onto every roof?
Only if it is safe. We inspect what can be seen safely: from the ground, from windows, from inside the loft space, from the roof where it is safe and by drone where applicable. The report says if anything couldn’t be seen.
Do you look in the loft space?
Usually, if there is one and it can be reached safely. From inside, the underside of the roof often shows damp, staining or daylight that cannot be seen from outside.
Are you structural engineers?
No. We point out what can be seen, like sagging or deflection, but we are not structural engineers and don’t carry out calculations. If we think you need an engineer, the report says so.
What happens after the survey?
You receive the written report by email, with photos and recommendations. It’s yours to share with a seller, insurer, roofer or managing agent, whichever applies.
How experienced are you?
We’ve completed more than 5,000 surveys, over more than 20 years, with 98% customer satisfaction.
Checking the roof from the ground
A lot can be seen from ground level. With binoculars, look for slipped or missing slates and tiles, gaps along the ridge and leaning chimneys. Never climb onto the roof to look.
It helps to keep a record: dates of leaks, photos from ground level and any work done on the roof. Share it with us when booking.