Greater London · London and the South East
Electronic leak detection in Kenley, Greater London
Not sure what state the flat roof membrane is in? We carry out electronic leak detection in Kenley and across Greater London, with plain-English findings.
- Breaches around outlets and penetrations
- Gaps at membrane joints
- Damage from equipment installers
Electronic leak detection for homes and businesses in Kenley
ELD is a way of pinpointing breaches in a flat roof’s waterproofing membrane. It works with an electrical current which can only get through the membrane at a breach. It can find holes too small to spot by eye so your roofer knows exactly where to repair. You get a photo-illustrated written report of each breach found. If you’re worried about gaps at membrane joints and new roofs to check before paving or planting, we can find out what’s behind it, on liquid-applied waterproofing, flat roof membranes and single-ply roofs alike.
Across London, flat roofs are everywhere, from back additions and dormers to roof terraces, blocks of flats and offices. Coverings range from felt and asphalt to EPDM rubber, GRP fibreglass and single-ply membranes, each with its own weak points. In Kenley, as anywhere in London, the right approach depends on what the roof is made of. Older flat roofs are frequently felt or asphalt, newer ones rubber or GRP.
Most points in the report come with a picture, so you can see each defect rather than just read about it. If something couldn’t be seen safely, the report is clear about it.
- Location
- Kenley (CR8, CR2)
- Region
- Greater London
- Prices
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- When we survey
- Monday to Sunday, daytime
- Insured
- PI and public liability insurance
- Phone
- 07833 053749
- Updated
- 27 October 2026
Electronic leak detection in Kenley: local notes
Addington Palace, about 3.3 miles north-east, is one of the historic houses in the wider area around Kenley. On older houses around here, roofs frequently carry the marks of earlier repairs, from replaced slates to new lead, and a listed home or one in a conservation area may need consent for changes of material. Alongside Victorian and Edwardian terraces, outer London has a great many interwar semis, often with hipped roofs of clay or concrete tiles. Hips, bay roofs and later loft conversions are typical of those semis, if your home is one of them. Next to the main roofs there is usually a flat roof somewhere, whether on an extension, a garage or a commercial unit.
For landlords with property near Kenley station, flat roofs on let property tend to be checked only when they fail, which is the costly way round. For an older house near a landmark such as Church of All Saints, later flat-roofed additions are common on older houses, and their edges and upstands frequently show the first signs of wear.
Kenley is about 1 mile south-east of Purley, in Greater London. Bookings from Kenley are handled just like any other: a call or an email, a price, then a date. Kenley is one of the places in Greater London we cover. London is in our area too.
Postcode districts we cover here for electronic leak detection: CR8 and CR2. That includes homes and businesses on Oaks Road, Park Road and Roke Road. Being close to the A22, Kenley is simple for us to get to for electronic leak detection. Nearby, we also carry out electronic leak detection in Riddlesdown (1 mile north), Sanderstead (1 mile north-east), Whyteleafe (1 mile south-east), Hamsey Green (1 mile east) and South Croydon (2 miles north). Larger places within reach include London (12 miles north), City of Westminster (13 miles north), Marylebone (14 miles north), Kensington (13 miles north), St Pancras (14 miles north) and Shoreditch (14 miles north).
What’s near Kenley
Locally, jobs take us to homes and businesses close to Dollypers Hill and Riddlesdown Collegiate. There is a railway station in Kenley itself: Kenley station. A little further out are St George's Walk (3.4 miles north) and Croydon Airport Visitor Centre (2.4 miles north). Not far away are Duppas Hill and Foxley Wood.
More services for Kenley
Common roof problems in Kenley
When the membrane is buried, holes cannot be seen at all. ELD can work on some covered roofs, depending on the build-up.
Look out for signs like these:
- Patched roofs that still leak
- Leaking laps in the waterproofing
- Leaks at pipes, outlets or fixings
- Leaks under green or ballasted roofs
Kenley is in London, so parking needs planning: let us know about parking bays, permits or a driveway as you book.
Choosing a roof surveyor
- Whether the loft space is looked at, where there is one
- Which viewpoints they use to see the roof
- What follow-up you get after the report
- What exactly goes into their report
Why act early in Kenley
Some breaches are too small to see. ELD picks up breaches a visual check might miss, on suitable membranes. Many older London roofs have only old felt under the slates, or no underlay at all, so once the slates or flashings let water past, little stops it reaching ceilings. Left unchecked, water soaks into timber and plaster and the damage spreads.
The cost of a survey depends on the roof: its size, its height, how many sections it has and how it can be reached and seen safely. We quote electronic leak detection for each roof, as the method and time depend on the roof.
Why book with us
- 20+ years’ experience
- Photos and a written report every time
- More than 5,000 surveys completed
- An independent view of the roof
See our cost guide or two real surveys.
The survey, step by step
It is useful to start with what’s prompted the survey: 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 more time on a big roof than a small one, and the build-up of the roof makes a difference 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. Mention any building rules, key holders or managing agents as you book.
- We start by finding out what the roof is made of and where it leaks.
- We confirm whether the roof is suitable for electronic testing.
- The testing method is chosen to suit the membrane and build-up.
- We test the membrane and find where current is passing through it.
- You get a report showing where each breach is, for your roofer to repair.
How to prepare
- Jot down any questions you want answered
- For a flat or shared roof, check access with the building owner or managing agent
- If it isn’t your property yet, arrange access through the agent
Arrange a survey
You can call us seven days a week. To book or ask a question, call 07833 053749 or email us.
Related advice
Checking the roof from ground level
It is useful to keep a record: when leaks happen, ground-level photos and any past roof work. Share it with us as you book.
Look up at the roof after a storm, from ground level: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Leave anything above ground level to a survey.
Roof by roof
Green and ballasted roofs
Some layers may need lifting for testing. We explain what’s needed when we quote.
Liquid-applied waterproofing
Testing a liquid-applied roof depends on what’s beneath the coating.
Tips from our surveys
Here are a few things we’d tell any owner, before and after a survey:
- Let us know about the membrane and build-up if you know it
- Keep a note of leaks after rain
- Consider ELD before paving or planting goes on
- Don’t leave water getting in
The report records each breach location with photos. Your roofer uses it to carry out repairs.
Act on leaks quickly. Water under a membrane can spread.
Questions from Kenley
Does a conservation area affect roof work in Kenley?
The council and Historic England’s list are the places to check. Either can affect what roof work is allowed, so it is worth checking before planning any.
Will parking be an issue for a roof survey in Kenley?
It depends on the street. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well, and a driveway is even better.
What’s the price of ELD?
Electronic leak detection is quoted for your roof, because the method depends on the roof. Size, build-up and access all affect the price. To get a quote, call 07833 053749 or email us.
Can you inspect my roof with a drone?
Where it helps and it is safe, yes. Whether we can fly on the day depends on the weather and the airspace rules, including flight restriction zones near airports. We’re a CAA-registered drone operator.
Can you survey in bad weather?
It can, depending on the survey. Drones can’t fly safely in high wind or heavy rain, and thermal imaging works best with a dry roof, little wind and a sunny day beforehand. We’ll rearrange with you if the weather is not right.
Can you give me structural calculations?
No. Our survey is not a structural engineer’s report, and it doesn’t include calculations. We’ll recommend an engineer if we see signs that call for one.
How many surveys have you done?
We have been surveying roofs for over 20 years and have carried out more than 5,000 surveys.