Greater London · London and the South East
Electronic Leak Detection in St Paul's Cray
We carry out electronic leak detection in St Paul's Cray and the rest of Greater London. We survey seven days a week.
- New roofs to check before paving or planting
- Leaks that return after repairs
- Water coming in under a flat roof
How electronic leak detection works in St Paul's Cray
Not every flat roof suits electronic testing. Certain membranes conduct electricity, and some build-ups lack the layer the test needs below the membrane. We’ll say if ELD will not work on your roof at the start. Any details you have about the membrane and build-up help us decide, such as drawings or specifications. It saves a wasted visit. Common reasons to book are breaches hidden under paving or planting and water coming in under a flat roof, across green roofs, single-ply roofs and flat roof membranes.
Water getting through a flat roof in London can travel under the covering and appear some way from the hole. Outlets, upstands against parapet walls and joins with the main roof are frequent culprits. In a converted house in St Paul's Cray, the roof above may belong to the building rather than one flat.
You can share the report with anyone who needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent, whichever applies.
- Place
- St Paul's Cray (BR5, BR7)
- Region
- Greater London
- Cost
- Quoted for your roof
- Report
- A written report with photos, by email
- When we survey
- Weekdays and weekends
- Insured
- PI and public liability insurance
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
Common questions in St Paul's Cray
Is parking a problem for a survey in St Paul's Cray?
It rarely stops a survey, but it’s worth planning. Tell us what parking is available nearby, and the visit is planned around it.
Is St Paul's Cray in the area you cover?
Yes, St Paul's Cray is within the area we cover. Our area covers London and South East England. You can phone 07833 053749 or use the contact form with the address and a few details.
Do you need to get into the loft?
Normally, if there’s one and it can be reached safely. The loft space can show things the outside can’t, such as damp timbers, staining or daylight.
Can every flat roof be tested?
Not every roof is suitable. Some membranes conduct electricity and some roofs lack the layer the test needs. We will tell you if yours is not suitable before testing.
How does ELD work?
A sound membrane blocks the test current, but a hole lets it through. That lets us find breaches that are too small to see.
Will you go up on the roof?
Only when it is safe. Some roofs are too steep or fragile to walk on safely. We use safe viewpoints, the roof space and a drone where applicable.
How many surveys have you done?
We have more than 20 years’ experience and have completed over 5,000 surveys.
Places near St Paul's Cray
What else we do in St Paul's Cray
What we do, step by step
Where it’s relevant and can be reached safely, the roof space is checked as well as the outside. Inside, we look for staining, damp, gaps and signs of movement. The whole visit normally takes a length of time set by the roof’s area and construction, and we’ll give you a guide when quoting. From the street, a London terrace usually shows only its front slope or parapet, so in St Paul's Cray 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? Tell us who holds the keys.
- We start by finding out what the roof is made of and where it leaks.
- We check that the membrane and build-up suit electronic leak detection.
- The testing method is chosen to suit the membrane and build-up.
- Testing runs across the roof to locate breaches in the membrane.
- You get a report showing where each breach is, for your roofer to repair.
Preparing for the visit
- Check the loft hatch can be reached
- If the roof is shared, arrange access with whoever manages the building
- Have keys ready for side gates, garages or roof access doors
Arrange a survey
Buyers should book once an offer has been accepted, so you have the findings in time to act on them before you exchange. For any other survey, just ring 07833 053749 or email us when you’re ready.
Advice
Flat roofs in St Paul's Cray
The wider area around St Paul's Cray has a long history of building, with Bromley Palace about 3.7 miles west. Older homes in the wider area often have features worth a closer look, such as lead valleys, tall stacks and roofs that have been patched over the years. Alongside Victorian and Edwardian terraces, outer London has a great many interwar semis, often with hipped roofs of 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. Mixed in with those pitched roofs are a good many flat ones, over rear extensions, dormers, garages and shops.
If you live in an older home near St Barnabas, any flat roof added at the back or on a dormer is likely to be far younger, and less durable, than the main roof. Anyone responsible for a site like Leesons Primary School will know that large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly. If you let a flat or house near St Mary Cray station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
St Paul's Cray is about 1 mile north of Orpington, in Greater London. Bookings from St Paul's Cray are handled just like any other: a call or an email, a price, then a date. Our area takes in places right across Greater London, large and small. For surveys nearby, see our London page.
Electronic leak detection in BR5 and BR7 work the same way as everywhere else we cover. Local streets include Main Road, Murray Road and Rushet Road. Close by, we survey roofs in St Mary Cray (1 mile south), Poverest (1 mile south), Derry Downs (1 mile south), Orpington (1 mile south) and Kevington (2 miles south-east). Within a short drive, we also cover London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (15 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north-west).
What’s near St Paul's Cray
We work in homes and buildings around Kemnal Technology College, The Blue Anchor Public House and Walsingham School, among other places. St Paul's Cray has its own railway station: St Mary Cray station. A little further out are Lullingstone Castle (4.8 miles south-east) and London Borough of Bromley Museum (1.5 miles south). Open spaces near St Paul's Cray include The Warren and Summer Hill.
What we cannot see
No survey can tell you everything, and it’s better to know them up front. Bear these in mind:
- Build-ups without a suitable layer below
- Carrying out the repair work
- Moisture spread under the membrane
If you’re not sure which survey you need, call 07833 053749 or use the contact form and we’ll give you a straight answer before you book. What our survey covers.
What we look at
- Roof terraces and balconies
- Green roofs
- Flat roof membranes
- Single-ply roofs
- Liquid-applied waterproofing
- Commercial flat roofs
Why get it checked now?
Some breaches are too small to see. ELD picks up breaches a visual check might miss, on suitable membranes. In St Paul's Cray, as in much of London, water from a roof defect can reach a neighbour’s home as easily as yours: failed flashings and blocked valley gutters can send water into more than one home. Finding it early keeps the work smaller.
To find out what your survey will cost, phone 07833 053749 or use the contact form with the address and a few details. The price is agreed before a date is set.
What you get with us
- Independent findings on the roof’s condition
- 5,000+ roofs surveyed
- Thermal imaging and drone inspection where they help
- Every finding written up with photos
Surveys for landlords and agents in St Paul's Cray
Freeholders and residents’ companies use a roof report to plan and budget, with the most urgent items set out first.
Buyers’ agents can book surveys on behalf of their clients. The report is emailed, so it can go straight to your client, photographs included.
How the survey changes by roof type
Green and ballasted roofs
Some layers may need lifting for testing. We explain what’s needed when we quote.
EPDM rubber roofs
ELD on EPDM depends on the product and the layers. We check this first.
What a survey costs
Prices vary from roof to roof, for these reasons:
- Height and safe access
- The roof’s overall size
- The number of roofs, including extensions and garages
- The use of thermal imaging or a drone
All our prices include VAT. We quote electronic leak detection for each roof, as the method and time depend on the roof. You’ll know the price for your roof before you book.
What to tell us when you get in touch
The more you tell us, the easier it is to price the survey. When you contact us, let us know:
- Pictures of the roof from a safe spot, if you have them
- Any marks or damp showing indoors
- The kind of building and roof involved
- Your timetable, such as an exchange date
Our phone lines are open seven days a week, including Saturdays and Sundays. To book or ask a question, call 07833 053749 or use the contact form.