Greater London · London and the South East
Electronic leak detection in Westerham, Greater London
Know where you stand with the flat roof membrane before you spend money on it. We carry out electronic leak detection in Westerham.
- Holes around roof penetrations
- Holes left by work on the roof
- Leaks that return after repairs
Electronic leak detection in Westerham: what you get
ELD suits many waterproofing membranes on flat roofs over offices, units, blocks of flats and homes. It can be used to trace an existing leak or check a new membrane before handover. We quote for each roof based on its size and build-up. Testing can be carried out on weekdays, Saturdays or Sundays, depending on the weather. Let us know about your roof to find out more. We survey liquid-applied waterproofing, green roofs and roof terraces and balconies, and the problems we’re asked to look at most are leaks through a flat roof with no obvious cause and damp inside with no sign on the roof.
Offices, shops and blocks of flats across London often have large flat roofs with plant, rooflights and walkways. Each pipe, upstand and fixing through the covering is a possible weak point. For a building in Westerham, 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.
Every survey ends with a written report, with photos, emailed to you. It sets out the condition of the flat roof membrane, any defects and our written recommendations.
- Place
- Westerham (TN16)
- Region
- Greater London
- Price
- Quoted for your roof
- Report
- Emailed report with photos and recommendations
- When we survey
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
Surveys for landlords and agents in Westerham
Shared roofs need a little more planning: access has to be agreed with whoever owns or manages the building. Mention it when you contact us and we’ll plan the visit with that in mind.
Surveys can also be booked by buyers’ agents acting for a client. The report is emailed, so it can go straight to your client, photographs included.
Flat and commercial roofs around Westerham
Outer London has a good many Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, often with hipped roofs in clay or concrete tiles. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Next to the main roofs there’s typically a flat roof somewhere, whether on an extension, a garage or a commercial unit. Historic houses such as Quebec House, about 0.2 miles south-east, show how far back building in the area around Westerham goes. On older houses around here, roofs often 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.
Westerham is in London, so parking needs planning: a visitor permit or a nearby bay makes the day easier, as a space near the door cannot be promised. For an older house near a landmark such as Church of St Mary the Virgin, the joins between later flat roofs and the old walls are where problems typically start. For landlords with property near Hurst Green station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Westerham is about 5 miles west of Sevenoaks, in Greater London. Houses, flats, blocks and commercial buildings in Westerham can all book electronic leak detection, with a written report and photographs every time. Our Greater London coverage includes Westerham and the places around it. Crawley is in our area too.
Electronic leak detection in TN16 are booked the same way as anywhere else. Whether your property is on Market Square, London Road and High Street or anywhere close by, we can survey it. Main roads around Westerham include the A25 and B2024. We also cover Force Green (1 mile north), Moorhouse Bank (1 mile south-west), Goodley Stock (2 miles south), The Chart (2 miles south-west) and South Street (2 miles north-west). We also work in nearby towns such as Orpington (8 miles north), New Cross (15 miles north), Thornton Heath (12 miles north-west), Croydon (10 miles north-west), East Dulwich (15 miles north-west) and Plumstead (15 miles north).
What’s near Westerham
Typical jobs here are in homes near The Olde House At Home Public House. Westerham’s nearest station is Hurst Green station, roughly 3.4 miles south-west of the centre. A little further out are Tandridge Priory (2.2 miles south-west). Not far away are Betsom's Hill and Dryhill Nature Reserve.
Questions from Westerham
Do you carry out roof surveys in Westerham?
Yes, Westerham is within the area we cover. We work right across London and South East England. You can ring 07833 053749 or drop us an email with the address and a few details, and we will talk through which survey suits.
How do I find out if my home in Westerham is listed?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. It matters most if you’re planning to re-roof in a different material.
What happens after the survey?
You’ll receive the report by email, and you decide the next step: use it with a seller, an insurer, a roofer or a managing agent.
Does this replace a RICS home survey?
No. Our survey looks at the roof, not the whole building. If you need a full building survey, you will need a RICS survey as well.
What is electronic leak detection?
The waterproofing membrane normally stops an electrical current, but a hole lets it through. That’s how we locate breaches you cannot see.
Is the repair part of the test?
No, the test finds the breaches and your roofer repairs them. The report gives your roofer the locations.
Are you insured?
We hold professional indemnity and public liability insurance, for every survey we carry out.
DIY checks: what’s safe
Watch the gutters in a downpour, from a window or the ground. Overflowing water can point to a blockage or a sagging run.
A DIY look is useful, but it is not a survey. From the ground, valleys, flashings and the backs of chimneys are frequently out of sight.
How the survey works
The aim of the visit is simple: to look at the flat roof membrane as closely as is safe and record what we find. Notes and photographs go into the written report. The visit typically takes as long as needed for the membrane area and the build-up, which we set out in the quote. In Westerham, as in much of London, plenty of properties are flats or terraces without side access, so the back of the roof is often seen from upstairs windows, from inside or, where a flight is allowed, from the air. If the building has a managing agent or access rules, tell us when you book.
- First, we confirm which roof areas are included.
- We get the roof ready for testing.
- Testing runs across the agreed area.
- We mark the breach locations in our records.
- You receive the results to pass to your roofer.
Before we arrive
- Find any records of previous roof work
- Keep pets in another room
- Make a note of anything you’d like us to look at
Getting a price
Booking is simple: just ring 07833 053749 or email us, let us know about the property and we will recommend the right survey. The price is agreed up front.
Advice
What we can’t see
Some things can’t be seen without opening up the roof, and that sets some limits:
- Roofs whose membrane or build-up isn’t suitable
- Parts of the roof covered by fixed equipment
- Fixing the holes we find
Not sure which survey suits your roof? You can ring 07833 053749 or use the contact form and we’ll tell you. The full list of what we check.
Roof types and parts we check
- Green roofs
- Commercial flat roofs
- Roof terraces and balconies
- Single-ply roofs
- Flat roof membranes
- Liquid-applied waterproofing
Before and after the survey
Here are a few things we’d tell any owner, before and after a survey:
- Act on new leaks promptly
- Find the breach before more patching
- Test new membranes before covering them
- Keep a note of leaks after rain
After your roofer repairs the breaches, a retest can confirm them if the build-up allows.
Keep outlets and gutters on flat roofs clear. Standing water puts more pressure on any weak point.
Also near Westerham
Also in Westerham
Roof by roof
Green and ballasted roofs
Some layers may need lifting for testing. We discuss this before quoting.
Liquid-applied waterproofing
Liquid waterproofing has no laps but holes and thin areas can occur. Suitability for ELD depends on the system.