Greater London · London and the South East
Pratt's Bottom Electronic Leak Detection
Need electronic leak detection in Pratt's Bottom? We can help, with findings in writing and pictures to back them up. Book a weekday or weekend visit.
- Leaks at pipes, outlets or fixings
- Breaches hidden under paving or planting
- Water coming in under a flat roof
Electronic leak detection in Pratt's Bottom: what you get
Electronic leak detection works on many flat roof membranes over offices, units, blocks of flats and homes. It helps trace a leak you already have or check a new membrane before handover. Each roof is quoted on its size and build-up. We can test on weekdays and at weekends, depending on the weather. Just ask about your roof. If you are worried about leaks at pipes, outlets or fixings and holes left by work on the roof, we can find out what’s behind it.
London has a lot of flat roofs: rear additions, dormers, roof terraces and the roofs of blocks and offices. Coverings range from felt and asphalt to EPDM rubber, GRP fibreglass and single-ply membranes, each with its own weak points. Which one is on a roof in Pratt's Bottom shapes how it’s checked. Many older flat roofs are felt or asphalt, and many newer ones EPDM rubber or GRP.
Most points in the report come with a picture, because a photo of a cracked flashing says more than a paragraph. If something couldn’t be seen safely, the report is clear about it.
- Place
- Pratt's Bottom (BR6, TN14)
- Wider area
- Greater London
- Price
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Call
- 07833 053749
- Updated
- 27 October 2026
The survey, step by step
Where it’s relevant and can be reached safely, the loft space is checked as well as the outside. In the loft, the signs we look for are staining, damp, daylight and sagging, as far as the space allows. All in, the survey usually takes a length of time set by the membrane area and the build-up, which we’ll explain when we quote. From the street, a London terrace normally shows only its front slope or parapet, so in Pratt's Bottom we work round the house, using the street, the windows, the loft and any safe vantage point behind it. Shared stairs or a basement flat? Let us know who holds the keys.
- First, we confirm which roof areas are included.
- The surface is prepared for the chosen method.
- Testing runs across the agreed area.
- We mark the breach locations in our records.
- The report is sent for your roofer to act on.
Preparing for the visit
- Jot down any questions you want answered
- For a flat or shared roof, check access with the building owner or managing agent
- If you’re buying, let the agent know when we’re coming
Arrange a survey
Getting a price is simple: just phone 07833 053749 or drop us an email, let us know about the property and we’ll suggest the right survey. The price is agreed up front.
Related advice
Nearby places to Pratt's Bottom
Also in Pratt's Bottom
Questions from Pratt's Bottom
Is parking a problem for a survey in Pratt's Bottom?
Sometimes, yes. If Pratt's Bottom has controlled parking where you are, a visitor permit is the easiest answer.
Do you cover Pratt's Bottom?
Yes, Pratt's Bottom is within the area we cover. Our area covers London and South East England. You can call 07833 053749 or send us an email with the address and a few details, and we will talk through which survey suits.
Can you inspect my roof with a drone?
Where it helps and it is safe, yes. Flights depend on the weather on the day and airspace rules, and we check for restrictions near airports before flying. We are a CAA-registered drone operator.
How do I book a survey in Pratt's Bottom?
The quickest way is to ring 07833 053749 or email us. Tell us the address and a little about the roof, and we will recommend the right survey. We survey seven days a week.
What’s in the survey report?
It sets out what we found, why it matters and what we recommend, backed by photographs. Anything we couldn’t see safely is noted too, so you know exactly what was covered.
Is this an asbestos survey?
No. Asbestos surveys and sampling aren’t something we do. The report may flag materials that could contain asbestos on buildings built or refurbished before 2000, with a recommendation to have a specialist asbestos surveyor check before it’s disturbed.
Do you use low-voltage or high-voltage testing?
The roof decides the method. We will explain why when we quote.
Landlords, agents and block managers in Pratt's Bottom
Managing agents and residents’ management companies use roof surveys to plan maintenance. The report sets out what needs attention now and what can wait.
An agent can book and manage the survey for a landlord. Access is agreed with the tenant in advance.
Roof by roof
EPDM rubber roofs
Whether an EPDM roof can be tested depends on the membrane and build-up. We check before we quote.
Single-ply membranes
ELD often works on single-ply membranes, depending on the type and build-up.
What electronic leak detection looks like in Pratt's Bottom
Historic houses like Down House, about 2.7 miles west, show how far back building in the area around Pratt's Bottom goes. If your house is among the older ones, expect a mix of original materials and later repairs on the roof, and a listed home or one in a conservation area may need consent for changes of material. 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. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
Landlords with a home close to Knockholt station may find that the flat roof over a let home is worth a look before it becomes a tenant complaint. Take a building like Pratts Bottom Primary School: large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Pratt's Bottom is about 3 miles south of Orpington, in Greater London. Houses, flats, blocks and commercial buildings in Pratt's Bottom can all book electronic leak detection. Pratt's Bottom is one of the towns and villages in Greater London we cover for electronic leak detection. We also survey roofs in London.
Here we cover the BR6 and TN14 postcode area for electronic leak detection. Whether your property is on Orchard Road, Runciman Close and Downs View Close or anywhere close by, we can survey it. Other places close to Pratt's Bottom include Halstead (1 mile south-east), Chelsfield (1 mile north-east), Bopeep (1 mile north-east), Badgers Mount (1 mile east) and Maypole (1 mile north-east). We also work in nearby towns such as London (14 miles north-west), Shoreditch (15 miles north-west), Whitechapel (14 miles north-west), Stockwell (13 miles north-west), Orpington (3 miles north) and Wimbledon (15 miles west).
Landmarks near Pratt's Bottom
We work in homes and buildings around Hewitt's Chalk Bank and Green Street Green Primary School, among other places. Pratt's Bottom’s nearest station is Knockholt station, about 0.8 miles east. Other landmarks nearby include Crofton Roman Villa (2.4 miles north-west) and Lullingstone Castle (3.8 miles east). Not far away are Betsom's Hill and Downe Bank Nature Reserve.
What a survey costs
When we price a survey, we consider:
- Chimneys, valleys, parapets and other details
- The height of the building and how the roof can be seen safely
- Commercial roofs and larger buildings
- The size of the roof
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 your survey before booking.
Helping us price your survey
Before you get in touch, it helps to have:
- Access details, like a loft hatch or a shared roof
- The type of building and roof, like pitched or flat
- Any marks or damp showing indoors
- Where the property is, with the postcode
We survey roofs on weekdays, Saturdays and Sundays. To arrange a day that suits you, call 07833 053749 or email us with the address and the days you’d prefer.
Do you need electronic leak detection in Pratt's Bottom?
Work on the roof can damage a membrane. Fixings, equipment and foot traffic can leave small holes.
A survey makes sense if you’ve noticed:
- Leaks through a flat roof with no obvious cause
- Leaks showing away from the breach
- Leaks under green or ballasted roofs
- Holes around roof penetrations
The streets around a church like All Souls' Church are often among the oldest in a place, and if yours is one of the older homes nearby, the joins between later flat roofs and the old walls are where problems typically start.
What to check before booking
- Which limits apply to the survey
- Their drone registration, if they fly one
- Whether the loft is part of the inspection
- How long the report takes to arrive
Why get it checked now?
Patching where you think the leak is often misses it. ELD shows the actual breach points. Many older London roofs have only old felt under the slates, or no underlay at all, so a slipped slate can soon mean water inside. Left unchecked, water soaks into timber and plaster and the damage spreads.
The cost of a survey depends on the roof: how big it is, how high it is, the number of separate roofs and how safely it can be seen. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Why choose Independent Roof Survey in Pratt's Bottom
- A sub-250g drone, flown with a CAA Flyer ID and Operator ID
- More than 20 years surveying roofs
- PI and public liability insurance
- Surveys seven days a week
Read our cost guide and two real surveys.