Greater London · London and the South East
Electronic leak detection in Farringdon, Greater London
Electronic leak detection across Farringdon, backed by more than 20 years’ experience. Every survey ends with a written report and photographs.
- Leaks that return after repairs
- Breaches around outlets and penetrations
- Leaks through a covered membrane
What we look for on each type of roof
Liquid-applied waterproofing
Small holes in liquid waterproofing may leak. ELD can help locate them on suitable roofs.
Bituminous membranes
Many flat roofs use bitumen-based membranes. Whether ELD suits them depends on the build-up.
About our electronic leak detection in Farringdon
We carry out electronic leak detection on flat roofs in Farringdon and across London and South East England. Testing normally takes a time that depends on the membrane area and the build-up, and we’ll give you a guide when quoting. Electronic leak detection is quoted for your roof, because the method depends on the roof. The results come in a written report with photos. We survey flat roof membranes, green roofs and roof terraces and balconies, and people most often book us about damage from equipment installers and a flat roof leak that can’t be traced.
On a London roof terrace or a flat roof over a back addition, water often runs under the covering before it shows. Upstands against parapets, outlets and the edge where flat meets pitched are common entry points. In a block or conversion in Farringdon, the flat roof is often a shared part of the building.
The report is yours to share with whoever needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent, whichever applies.
- Location
- Farringdon (EC1V, EC1R, EC1P)
- Region
- Greater London
- Cost
- Quoted for your roof
- Reports
- A written report with photos, by email
- Appointments
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Call
- 07833 053749
- Updated
- 27 October 2026
Why it is worth a survey now in Farringdon
Patching where you think the leak is often misses it. ELD shows the actual breach points. In Farringdon, as across London, an overflowing gutter soaks the wall below, which can lead to damp inside. A blocked outlet ignored for a winter or two can mean damp walls inside.
To find out what your survey will cost, phone 07833 053749 or email us and tell us about the roof. We’ll confirm the figure before booking.
Why book with us
- Drones and thermal imaging where applicable
- 5,000+ roofs surveyed
- Weekday and weekend surveys
- Two decades and more of roof surveys
Take a look at our cost guide or what we found on two real jobs.
For landlords and managing agents
We also survey roofs for businesses and commercial landlords, including offices, shops and units. Larger roofs take longer, so they’re priced to suit.
If you own several properties, surveys can be booked for more than one address. To arrange surveys for several addresses, phone 07833 053749 or send us an email.
Electronic leak detection in Farringdon: local notes
Many homes in inner London are Victorian and Edwardian terraces, frequently with Welsh slate roofs. Behind many of their parapets sit butterfly roofs and valley gutters that can’t be seen from the pavement. In a house like that, shared stacks, party-wall upstands and lead flashings all need looking at as far as they can be seen. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. With Dr Johnson's House about 0.4 miles south-west, Farringdon sits in an area with a long building history. Older homes in the wider area frequently have features worth a closer look, like lead valleys, tall stacks and roofs that have been patched over the years, and a listed home or one in a conservation area may need consent for changes of material.
If you run a business near Gabriel's Wharf, outlets and upstands on commercial flat roofs are the places to check before trouble starts. For hotels and guest houses around Farringdon, a roof problem found early is far less disruptive than one found by a guest, so it’s worth knowing the roof’s condition.
Farringdon is about 2 miles north of London, in Greater London. Houses, flats, blocks and commercial buildings in Farringdon can all book electronic leak detection. Across Greater London, we cover Farringdon and the places around it.
We work across the EC1V, EC1R and EC1P postcode area for electronic leak detection and the streets around it. Whether your property is on Oat Lane, Shoe Lane and Long Lane or anywhere close by, we can survey it. Main roads around Farringdon include the A1 and A4, so getting to you is simple. Other places close to Farringdon include Smithfield (1 mile south), Clerkenwell (1 mile north), Holborn (1 mile west), Blackfriars (1 mile south) and Temple Bar (1 mile south-west). We also work in nearby towns such as Kensington (4 miles west), Walthamstow (6 miles north-east), Hampstead (4 miles north-west), Ruislip (14 miles west), Brompton (3 miles south-west) and Stockwell (4 miles south).
Local landmarks in Farringdon
We work in homes and buildings around The Castle Public House, St Mary-at-Hill and Barts Health Archives. Nearby too are St Peter and St Paul RC Primary School (within half a mile north), Barbican Conservatory (less than half a mile east) and Central Foundation Boys' School (0.8 miles east). There’s a railway station in Farringdon itself: Farringdon station. Nearby you’ll also find Museum of the Order of St John (less than half a mile north-east) and Gabriel's Wharf (0.9 miles south). Green spaces nearby include Ludgate Hill and Barnsbury Wood.
Tips that help
Here are a few things we’d tell any owner, before and after a survey:
- Share any drawings of the roof
- Keep outlets clear of debris
- Don’t keep patching the same spot
- Ask contractors to protect the membrane
Where the evidence points to walls, copings or rooflights, we’ll note it, so other causes can be checked.
Act on leaks quickly. Water under a membrane can spread.
When to book a survey in Farringdon
Work on the roof can damage a membrane. Fixings, equipment and foot traffic can leave small holes.
A survey can pick up problems like:
- Breaches around outlets and penetrations
- Waterproofing to test before it is covered
- Punctures from foot traffic or tools
- Damp inside with no sign on the roof
If you own a rental within reach of Farringdon station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
Choosing a roof surveyor
- Whether the loft is part of the inspection
- Their track record with similar roofs
- Whether the price includes VAT
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
The survey, step by step
The visit has one job: to see as much of the flat roof membrane as can safely be seen and record it clearly. Notes and photos go into the written report. The visit typically takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. From the street, a London terrace normally shows only its front slope or parapet, so a visit in Farringdon moves between viewpoints: the pavement, upstairs windows, the loft and any safe spot at the back. If other people live in the building, let us know who can let us into the shared parts.
- We start with what you know about the roof and the leak.
- The roof is assessed for suitability first.
- The test method is chosen to suit the roof.
- The membrane is tested and breaches are found.
- A report with photographs shows where each breach is.
Getting ready for the survey
- Let us know about any leaks, stains or damp patches you know of
- For flats, make sure roof access has been agreed
- Move anything stored under the loft hatch
How to book
Photos help, if you have them. Pictures from ground level or a window are fine. To get started, ring 07833 053749 or use the contact form.
Related advice
Questions from Farringdon
Can parking be tricky for a visit in Farringdon?
It depends on the street. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
Is my home in Farringdon listed or in a conservation area?
We can’t confirm that for you, but Historic England’s list and your council can. Both listing and conservation areas can limit changes of roofing material.
Do you look in the roof space?
If it’s needed and safe to reach, yes. We look for staining, damp, daylight and signs of movement.
Will you go up on the roof?
Only if it’s safe. We look at everything that can be seen safely: from the ground, from windows and vantage points, from the loft space, from the roof itself where safe and by drone where applicable. Anything we can’t see is noted in the report.
Can you find leaks on a covered flat roof?
On some roofs, yes. What sits on the membrane affects the method so we look at the roof first.
How do I arrange electronic leak detection in Farringdon?
It is easiest to call 07833 053749 or drop us an email. Give us the address and some details about the roof. Surveys run on weekdays and at weekends.
How many surveys have you done?
Over 5,000 surveys so far, across 20+ years of surveying roofs, and 98% of clients are satisfied.