Greater London · London and the South East
Electronic Leak Detection in Sidcup
A careful look at the flat roof membrane at your property in Sidcup, and put it all in a written report with photos.
- Punctures from foot traffic or tools
- New membranes needing a check before handover
- Breaches hidden under paving or planting
Tips from our surveys
A little preparation and a few simple habits help, both for the survey and for the roof itself. Our tips:
- Share any drawings of the roof
- Record dates and spots where water appears
- Do not keep patching the same spot
- Keep outlets clear of debris
If we think the leak is not coming through the membrane, the report says so, so other causes can be checked.
Keep outlets and gutters on flat roofs clear. Standing water puts more pressure on any weak point.
Electronic leak detection for homes and businesses in Sidcup
A leak in a flat roof often shows up a long way from where the water gets in. That makes leaks hard to trace by eye. Electronic leak detection tests the membrane itself, to find where it has been breached. It is testing only and leave the repair to your roofer. On suitable roofs, it replaces guesswork with a located breach. The results then follow in a written report with photos. If you’re worried about a flat roof leak that can’t be traced and leaks at pipes, outlets or fixings, we can find out what’s behind it, on green roofs, liquid-applied waterproofing and flat roof membranes alike.
London has a lot of flat roofs: rear additions, dormers, roof terraces and the roofs of blocks and offices. They’re covered in felt, asphalt, EPDM rubber, GRP fibreglass or single-ply membranes, and each fails in its own way. Which one is on a roof in Sidcup shapes how it is checked. Many older flat roofs are felt or asphalt, and many newer ones EPDM rubber or GRP.
Findings are set out part by part, from the coverings down to the gutters. You will see the good as well as the bad.
- Place
- Sidcup (DA14, DA15, SE9, DA5)
- Region
- Greater London
- Cost
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- When we survey
- Weekdays, Saturdays and Sundays
- Insured
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
What we do, step by step
On the day, we begin with a quick chat about the roof and anything that’s worrying you. We then inspect everything that can be seen safely, using the ground, windows, the loft and a drone where applicable. The survey typically takes as long as needed for the roof’s area and construction, which we’ll explain when we quote. In a London conversion, the way into the loft space is often from a communal landing or the top flat. If that applies to your building, it helps to agree access with the neighbours or the managing agent first. Everything else is planned around the building, not the postcode.
- We agree the area to be tested.
- We get the roof ready for testing.
- We work across the roof with the test equipment.
- We mark the breach locations in our records.
- The report is sent for your roofer to act on.
Preparing for the visit
- Note where any stains or damp appear
- Make a note of anything you’d like us to look at
- Move anything stored under the loft hatch
How to book
To book a survey, call 07833 053749 or email us and let us know the address and what’s prompted the survey. We’ll confirm the price before you book.
Related advice
Landlord and commercial surveys in Sidcup
If you own several properties, surveys can be booked for more than one address. To discuss a number of properties, call 07833 053749 or drop us an email with the addresses.
Freeholders and residents’ companies use a roof report to plan and budget, putting the urgent items at the top.
Signs you need electronic leak detection in Sidcup
Joints and laps in a membrane can fail over time. A gap that is hard to see can let water in long before anyone notices.
It’s worth booking a survey if you’ve seen:
- Punctures from foot traffic or tools
- Stains far from any visible defect
- Breaches hidden under paving or planting
- Patched roofs that still leak
Parking in Sidcup, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day easier, as a space near the door cannot be promised.
What to check before booking
- Will they check the loft as well as the outside?
- Which viewpoints they use to see the roof
- How long they’ve been surveying roofs
- Whether the price includes VAT
Your questions about electronic leak detection in Sidcup
Is parking a problem for a survey in Sidcup?
It can be, so it helps to let us know about permits, visitor bays or off-street space as you book. That way the visit can be planned around it.
Is my home in Sidcup listed or in a conservation area?
Start with Historic England’s list for listing and your council for conservation areas. Either can affect what roof work is allowed, so it is worth checking before planning any.
Is this a RICS survey?
No. This is a survey of the roof only, so it is not a RICS Level 2 or Level 3 survey. Many buyers have both.
Do you carry out surveys on Saturdays and Sundays?
We survey on any day from Monday to Sunday, during the day. Just say which days work for you.
What happens next?
You will receive the report by email, and you decide the next step: raise it with a seller, send it to an insurer, brief a roofer or share it with a managing agent.
Can you give me structural calculations?
No. Our survey is not a structural engineer’s report. If we see signs that need an engineer’s opinion, we’ll recommend one.
Can you inspect my roof with a drone?
Where it helps and the rules allow, yes. We hold a CAA Flyer ID and Operator ID and fly a drone under 250g, and every flight depends on the airspace and the weather.
What electronic leak detection looks like in Sidcup
The wider area around Sidcup has a long history of building, with Danson House about 1.7 miles north. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and any change of roofing material on a listed home needs checking with the council first. Further from the centre, London’s housing takes in interwar semis with hipped roofs in clay or concrete tiles as well as slate-roofed terraces. If your home in Sidcup is one of them, bay roofs, hips and later dormers each have their own details. Next to the main roofs there’s typically a flat roof somewhere, whether on an extension, a garage or a commercial unit.
Shop and office owners around Broadway Shopping Centre may find that a flat roof over a business is out of sight and out of mind until it leaks. For landlords with property near Sidcup station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
Sidcup is about 3 miles north of Orpington, in Greater London. We visit Sidcup as part of our work across Greater London, for houses, flats and commercial buildings. Across Greater London, we cover Sidcup and the places around it. London is in our area too.
All of DA14, DA15, SE9 and DA5 is covered for electronic leak detection. Streets in the area include Station Road, High Street and Jubilee Way, and we cover them all. Being close to the A211 and A2001, Sidcup is simple for us to get to. If you’re just outside Sidcup, we cover Albany Park (1 mile south), Blendon (1 mile north-east), Foots Cray (1 mile south-east), Bexley (2 miles north-east) and North Cray (2 miles east). Further out, we also cover London (10 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (14 miles west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
Landmarks near Sidcup
Locally, jobs take us to homes and businesses close to The Alma pub, Waring Park and Chislehurst and Sidcup Grammar School, among other places. Sidcup has its own railway station: Sidcup station. Other landmarks nearby include Queen Mary's Hospital (1 mile south) and Broadway Shopping Centre (2.4 miles north-east). For a walk, there’s Summer Hill and The Tarn.
What affects the cost of electronic leak detection
Every roof is different, so prices are confirmed before booking. These are the things that affect it:
- House, block, shop or office
- The size of the roof
- How many separate roofs there are, such as extensions, dormers and garages
- Features like valleys, chimneys, dormers and parapets
Every price we give includes VAT. We quote electronic leak detection for each roof, as the method and time depend on the roof. We confirm the price for the job before booking.
Booking your survey
A little information up front helps. Please include:
- Where the property is, with the postcode
- Where water is showing inside, if it is
- What’s prompted the survey
- Access details, such as a loft hatch or a shared roof
If you are buying, it’s useful to book soon after your offer is accepted, so you have the findings in time to act on them before you exchange. Otherwise, simply ring 07833 053749 or use the contact form whenever suits you.
Also near Sidcup
More services for Sidcup
Roof by roof
Bituminous membranes
Bituminous roofs often have laps and old repairs where breaches occur. We test where the roof suits it.
EPDM rubber roofs
Certain rubber membranes are conductive, which can rule out some methods. We will say if the test won’t work.