Greater London · London and the South East
Electronic leak detection in Bishopsgate, Greater London
Electronic leak detection in Bishopsgate and the rest of Greater London. We survey on weekdays, Saturdays and Sundays.
- Holes around roof penetrations
- Leaks under green or ballasted roofs
- Gaps at membrane joints
What affects the cost of electronic leak detection
Several things affect the price of a survey:
- Features like valleys, chimneys, dormers and parapets
- How many separate roofs there are, such as extensions, dormers and garages
- The size of the roof
- The type of building, from a house to a block or an office
The cost of a survey depends on the roof: its size, its height, how many sections it has and how safely it can be seen. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Getting in touch
To price your survey accurately, we will ask about:
- What kind of property and roof it is
- Any stains, drips or damp patches you’ve seen indoors
- The reason for the survey, like buying, a leak or storm damage
- Any deadline, such as an exchange date
To arrange a survey, call 07833 053749 or send us an email and let us know the address and what’s prompted the survey. We’ll confirm the price before you book.
About our electronic leak detection in Bishopsgate
ELD is a way of pinpointing breaches in a flat roof’s waterproofing membrane. It uses a small electrical current that passes through the membrane only where there is a breach. That lets us locate holes that are too small to see so your roofer knows exactly where to repair. The results come in a report with photos. We survey flat roof membranes, liquid-applied waterproofing and single-ply roofs, and the problems we’re asked to look at most are failed seams and laps and holes around roof penetrations.
Commercial and residential blocks across London frequently have big flat roofs with plant, rooflights and access walkways. Every penetration and upstand is a place where a membrane can fail. For a building in Bishopsgate, access is agreed with whoever manages the roof ahead of the visit. Plant bases, rooflights and cable entries are all places where water can get in.
We keep jargon out of it: if work is needed, the report says so clearly, and where it can wait, that is said too.
- Where
- Bishopsgate (E1, EC2A, EC1Y)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- When we survey
- Monday to Sunday, daytime
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
FAQs for Bishopsgate
Is my home in Bishopsgate listed or in a conservation area?
Start with Historic England’s list for listing and your council for conservation areas. It’s worth checking before planning roof work, as both can affect what’s allowed.
Will parking be an issue for a roof survey in Bishopsgate?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Can every flat roof be tested?
ELD does not suit every roof. Some membranes conduct electricity and some roofs lack the layer the test needs. If your roof will not work, we’ll say so before testing.
What does electronic leak detection do?
ELD passes a small electrical current across the roof to locate holes in the membrane. The current only gets through where the membrane is breached, which shows us where the hole is.
What does the report include?
It sets out what we found, why it matters and what we recommend, with photos throughout. It also says if any part of the roof couldn’t be seen safely.
How is ELD priced?
We quote electronic leak detection for each roof, as the method and time depend on the roof. The price depends on the roof’s size and build-up. To get a quote, phone 07833 053749 or use the contact form.
Will you repair the leak?
No. ELD is testing only. The report shows where each breach is for your roofer to repair.
Landlords, agents and block managers in Bishopsgate
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. Recommendations are set out by urgency where it matters, which helps with budgets and planning.
With a portfolio of properties, surveys can be booked for more than one address. To discuss a number of properties, ring 07833 053749 or send us an email with the addresses.
Roof by roof
Bituminous membranes
Older felt roofs frequently have seams and patches that can leak. Testing depends on the roof.
EPDM rubber roofs
Some EPDM membranes conduct electricity, which can rule out some methods. We’ll tell you if yours isn’t suitable.
Tips that help
Here are a few things we’d tell any owner:
- Don’t keep patching the same spot
- Have roof specifications to hand
- Do not let outlets block
- Check new waterproofing before handover
The report records each breach location with photos. Your roofer uses it to carry out repairs.
Keep people off the flat roof unless they need to be there. Many breaches come from foot traffic.
The survey, step by step
The visit normally starts outside and finishes in the loft: first the slopes, edges and gutters from every safe viewpoint, then the loft space where it can be reached. In total, it takes more time on a big roof than a small one, with the construction of the roof playing a part too. From the street, a London terrace typically shows only its front slope or parapet, so a visit in Bishopsgate moves between viewpoints: the pavement, upstairs windows, the loft and any safe spot at the back. Shared stairs or a basement flat? Tell us who holds the keys.
- We ask about the roof, its age, its membrane and where leaks appear inside.
- The roof is assessed to see if electronic testing will work on it.
- The method depends on the membrane and what sits above and below it.
- The roof is tested and any breaches are located.
- You get a report showing where each breach is, for your roofer to repair.
How to prepare
- Agree roof access with the managing agent if it is shared
- Let us know where we can park nearby
- Leave a clear route to the loft
Getting a price
You can call us seven days a week, including Saturdays and Sundays. For a price or to book, ring 07833 053749 or email us.
Related advice
What we cannot see
It’s a careful look at the flat roof membrane, not the whole story. Its limits include:
- Roofs whose membrane or build-up is not suitable
- Parts of the roof covered by fixed equipment
- Moisture spread under the membrane
Not sure which survey suits your roof? You can call 07833 053749 or send us an email and we will tell you before you book. The full list of what we check.
What this survey covers
- Roof terraces and balconies
- Flat roof membranes
- Green roofs
- Liquid-applied waterproofing
- Commercial flat roofs
- Single-ply roofs
Flat and commercial roofs around Bishopsgate
Within a mile and a half or so of Bishopsgate there are several hotels, and hotels, like offices and blocks of flats, often have flat roofs. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use. About 0.4 miles south-west lies Mansion House, a reminder of how long the area around Bishopsgate has been built on. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and the council can say whether a home is in a conservation area.
For landlords with property near London Liverpool Street station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies. Hotels and guest houses near Bishopsgate cannot easily close rooms for a leak. For an older house near a landmark such as Church of St Ethelburga, flat-roofed rear additions and dormers added over the years are worth checking.
Bishopsgate is about 1 mile north-east of London, in Greater London. Roofs in Bishopsgate get the same thorough look as anywhere else in Greater London. Bishopsgate is one of the places in Greater London we cover.
Surveys in E1, EC2A and EC1Y work the same way as everywhere else we cover. We offer electronic leak detection to properties on Bush Lane, Swan Lane and Love Lane. Bishopsgate sits on or near the A3 and A10, so getting to you is simple. Neighbouring places we cover for electronic leak detection include Aldgate (1 mile south-east), Spitalfields (1 mile east), City of London (1 mile west), Tower Hill (1 mile south) and Whitechapel (1 mile east). We also work in nearby towns like City of Westminster (3 miles west), Marylebone (3 miles west), Kensington (5 miles west), Walthamstow (5 miles north-east), Hampstead (5 miles north-west) and Ruislip (15 miles west).
What’s near Bishopsgate
In Bishopsgate, that means homes and buildings near Bishopsgate Institute Special Collections and Archives, St Mary-at-Hill and The Aldgate School, among other places. Nearby too are White Hart pub (within half a mile north-east), Central Foundation Boys' School (0.7 miles north) and Finsbury Circus (less than half a mile north-west). Bishopsgate has its own railway station: London Liverpool Street station. Other landmarks nearby include London Bridge Hospital (0.7 miles south) and Gabriel's Wharf (1.2 miles south-west). Green spaces nearby include St. James's Park Lake and Tower Hill.