Greater London · London and the South East
Deptford Electronic Leak Detection
Find out what’s going on with the flat roof membrane before you decide what to do next. Electronic leak detection in Deptford, with photographs and a clear written report.
- Repairs that haven’t stopped the leak
- Damp inside with no sign on the roof
- Leaks through a covered membrane
FAQs for Deptford
Do you look at commercial flat roofs near Deptford, such as hotels?
Yes, commercial flat roofs are part of what we cover. Larger commercial roofs are quoted for the building, and roof access is agreed with you before the visit.
Does a conservation area affect roof work in Deptford?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it is in a conservation area. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Does this replace a RICS home survey?
No. Our survey is a roof survey, not a RICS Level 2 or Level 3 survey of the whole building. It focuses on the roof and can sit alongside a RICS survey.
Is the repair part of the test?
No. We test the membrane and report. The report shows where each breach is so your roofer can fix them.
What’s the best way to book?
To arrange a survey, phone 07833 053749 or use the contact form with the address, the type of property and what’s prompted the survey. We’ll confirm the price and agree a day with you.
How does ELD work?
It uses an electrical current to find breaches in a flat roof membrane. A breach lets the current through, which shows us where the hole is.
Are you insured?
Our surveys are covered by professional indemnity and public liability insurance. If you need details for a managing agent or a building owner, just ask.
How electronic leak detection works in Deptford
Our ELD report shows where each breach was found, with photographs. It tells your roofer exactly where to repair rather than guessing. We do not estimate repair costs, so your roofer prices the work. Testing again after repairs can confirm the breaches have been dealt with if the build-up allows. You get a written report with photos. If you’ve noticed stains far from any visible defect and a flat roof leak that can’t be traced, a survey will tell you what’s going on, on green roofs, liquid-applied waterproofing and commercial flat roofs alike.
Offices, shops and blocks of flats across London often have large flat roofs with plant, rooflights and walkways. Every penetration and upstand is a place where a membrane can fail. For a building in Deptford, access is agreed with whoever manages the roof ahead of the visit. Rooflights, plant supports and pipe entries are common places for a membrane to fail.
Where we cannot see part of the flat roof membrane, the report says so. You’ll know exactly what was inspected and what wasn’t.
- Place
- Deptford (SE8, SE10, SE14)
- Region
- Greater London
- Cost
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- When we survey
- Weekdays, Saturdays and Sundays
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
How it works
Expect us to ask a few questions before we start, about the roof’s history, any leaks and past repairs. The inspection then takes more time on a big roof than a small one, with the construction of the roof playing a part too. Many London properties are flats or terraces with no side access, so rear slopes are viewed from windows, the loft or, where a flight is allowed, by drone. If the building has a managing agent or access rules, tell us when you book.
- 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 testing method is chosen to suit the membrane and build-up.
- The roof is tested and any breaches are located.
- You get a report showing where each breach is, for your roofer to repair.
Before the survey
- Have any questions written down, so nothing gets missed
- Point out any leaks or damp patches
- Buyers: confirm access with the estate agent or seller
Getting a price
Most bookings start with a short call: ring 07833 053749 or drop us an email and we’ll ask a few questions about the roof. The price is agreed before a date is set.
Read more
When to book a survey in Deptford
Other trades on the roof can puncture the waterproofing. Fixings, equipment and foot traffic can leave small holes.
A survey can pick up problems such as:
- Damp inside with no sign on the roof
- Leaks through a covered membrane
- Punctures from foot traffic or tools
- Leaking laps in the waterproofing
If you look after a shop, office or commercial unit, for example near Lewisham Shopping Centre, flat roofs over shops and units are easy to forget until water comes through a ceiling.
Choosing a roof surveyor
- Whether they hold professional indemnity and public liability insurance
- What the survey will not cover
- Do they have a CAA Flyer ID and Operator ID for drone work?
- How long they’ve been surveying roofs
Before and after the survey
Some practical points come up on survey after survey. They apply to most roofs:
- Keep foot traffic on flat roofs to a minimum
- Use boards when working on the roof
- Do not let outlets block
- Share any drawings of the roof
Questions about the results are welcome. We can talk you through the findings.
Consider testing a new membrane before it is covered. Finding breaches is simpler at that stage.
What a survey costs
What a survey costs depends on the time and equipment it needs. The main factors are:
- Extensions, dormers and garages with roofs of their own
- Height and safe access
- Chimneys, valleys, parapets and other details
- Whether thermal imaging or a drone is needed
All our prices include VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. You’ll know the price for the job before you book.
What we need to know
To price your survey accurately, we will ask about:
- Any stains, drips or damp patches you’ve seen indoors
- What’s prompted the survey
- Your postcode, so we can check access and travel
- Pictures of the roof from a safe spot, if you have them
Surveys can be booked for weekdays, Saturdays or Sundays. To find a date that works for you, ring 07833 053749 or drop us an email with the address and the days you’d prefer.
What electronic leak detection looks like in Deptford
Deptford has a number of hotels within about a mile and a half, and hotels, like offices and blocks of flats, frequently have flat roofs. If you look after one, a leak through a flat roof can put a room out of use. Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. A butterfly roof with a central valley gutter, tucked behind a parapet wall, is common on these houses. 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.
Historic houses such as Queen's House, about 1 mile east, show how far back building around Deptford goes. On a period home nearby, any flat roof is likely to be a later addition with its own lifespan. Take a building like Tidemill Academy: ponding and blocked outlets on a wide flat roof are worth catching before the next wet season.
Deptford is about 3 miles south-east of Whitechapel, in Greater London. We provide electronic leak detection for homes and businesses in Deptford and nearby. Our Greater London coverage includes Deptford.
Postcode districts we cover here for electronic leak detection: SE8, SE10 and SE14. We offer electronic leak detection to properties on Mill Lane, Dixon Road and Clare Road. With the A2209 close by, Deptford is simple for us to get to. We also cover New Cross (1 mile south-west), St Johns (1 mile south), Millwall (1 mile north), Isle of Dogs (1 mile north-east) and North Greenwich (1 mile north-east). Further out, we also cover London (3 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (8 miles west), St Pancras (5 miles north-west) and Shoreditch (4 miles north-west).
Near you in Deptford
Locally, jobs take us to homes and businesses close to Addey and Stanhope School, Sue Godfrey Nature Park and Deptford Arms and the streets around them. Deptford has its own railway station: Deptford station. Nearby you’ll also find Greenwich Castle (1.1 miles east) and Lewisham Shopping Centre (1.3 miles south-east). Not far away are Sue Godfrey Nature Park and Tower Hill.
What this survey cannot tell you
This isn’t a RICS building survey, a structural engineer’s report or an asbestos survey. Other limits to bear in mind:
- Carrying out the repair work
- Roofs whose membrane or build-up isn’t suitable
- Water entering through details rather than the membrane
If you’re not sure which survey you need, call 07833 053749 or send us an email and we will give you a straight answer before booking. What a survey covers and does not.
What this survey covers
- Flat roof membranes
- Commercial flat roofs
- Roof terraces and balconies
- Green roofs
- Single-ply roofs
- Liquid-applied waterproofing
Checking the roof from ground level
After heavy rain, check ceilings and the tops of walls for new stains. Take a photo and write down when you saw it.
Your own check is a good start, but it is not a survey. You will not see flashings, valleys or the backs of chimneys properly from the ground, and those are details a survey looks at closely.