Greater London · London and the South East
Pollards Hill Electronic Leak Detection
Electronic leak detection in Pollards Hill from an independent, experienced roof surveyor. Over 5,000 surveys and 20+ years behind us across London and South East England.
- Patched roofs that still leak
- Damage from equipment installers
- New roofs to check before paving or planting
Landlords, agents and block managers in Pollards Hill
Letting agents can arrange access with tenants, at a time agreed ahead of time. Surveys run seven days a week, which helps when tenants work during the week.
Surveys can also be booked by buyers’ agents acting for a client. Reports are emailed, so they’re easy to pass on, photographs included.
How electronic leak detection works in Pollards Hill
There are different ELD methods. Low-voltage testing is normally done with the surface wet and high-voltage methods need the membrane dry and exposed. Which one suits depends on the membrane and the layers of the roof, and we will explain our choice. If neither method suits your roof, we will tell you at the outset. Typical surveys look at damp inside with no sign on the roof and leaks that return after repairs, on flat roof membranes, commercial flat roofs and roof terraces and balconies.
On a London roof terrace or a flat roof over a back addition, water frequently runs under the covering before it shows. Outlets, upstands against parapet walls and joins with the main roof are frequent culprits. In a block or conversion in Pollards Hill, the flat roof is frequently a shared part of the building.
Pictures do a lot of the work in our reports, 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.
- Where
- Pollards Hill (CR7, SW16, SE19)
- Region
- Greater London
- Price
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- Survey days
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
Electronic leak detection around Pollards Hill
Inner London’s Victorian and Edwardian terraces often have Welsh slate roofs. From the street you may see only a parapet, with a butterfly roof and a valley gutter behind it draining to the back. In a house like that, shared stacks, party-wall upstands and lead flashings all need looking at as far as they can be seen. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. About 1.9 miles north-east lies Kingswood House, a reminder of how long the area around Pollards Hill has been built on. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and the council can say whether a home is in a conservation area.
For an older house near a landmark like St Oswald, later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear. If you let a flat or house near Norbury station, flat roofs on let property tend to be checked only when they fail, which is the costly way round. For businesses in and around places like Centrale Croydon, flat roofs over shops and units are easy to forget until water comes through a ceiling.
Pollards Hill is about 1 mile north of Thornton Heath, in Greater London. Roofs in Pollards Hill get the same thorough look as anywhere else in Greater London. Our Greater London coverage includes Pollards Hill. There’s also a page for London.
Electronic leak detection in CR7, SW16 and SE19 work the same way as everywhere else we cover. Whether your property is on Green Lane, Croft Road and Downs Road or a nearby road, we can survey it. Close by, we survey roofs in Norbury (1 mile north), Thornton Heath (1 mile south), Streatham (2 miles north-west), Streatham Park (2 miles north-west) and Mitcham (2 miles west). We also work in nearby towns like London (6 miles north), City of Westminster (8 miles north), Marylebone (8 miles north), Kensington (7 miles north-west), St Pancras (8 miles north) and Shoreditch (8 miles north).
Landmarks near Pollards Hill
In Pollards Hill, that means homes and buildings near Norbury Manor Business and Enterprise College for Girls, Silburn Reid and The Moon Under Water pub and the streets around them. The nearest railway station is Norbury station, roughly 0.6 miles west of the centre. Well-known places in the area include Crystal Palace Museum (1.5 miles north-east) and Croydon University Hospital (1.3 miles south). For a walk, there’s Knight's Hill and Biggin Wood.
What affects the cost of electronic leak detection
We confirm the price for your survey before you book. These are the things that affect it:
- The roof’s overall size
- Extra roofs, like extensions, dormers or garages
- Whether it’s a home or a commercial building
- Chimneys, valleys, parapets and other details
All our prices include VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. We confirm the price for the job before booking.
What to let us know when you get in touch
Here’s what helps us most when you contact us:
- Pictures from the garden or a window, if you have them
- Whether there’s a loft hatch, a shared roof or tricky access
- Any deadline, such as an exchange date
- The kind of building and roof involved
If you have photos of the roof, send them over. Pictures from the ground or a window are fine, and please don’t climb up for a closer look. To get started, phone 07833 053749 or drop us an email.
Before and after the survey
Small things make a difference. Some pointers:
- Find the breach before more patching
- Get leaks traced quickly
- Share any drawings of the roof
- Check new waterproofing before handover
Where the evidence points to walls, copings or rooflights, we’ll note it, so other causes can be checked.
Act on leaks quickly. Water under a membrane can spread.
Leave it or get it looked at?
Testing a new membrane before it’s covered is easier than tracing a leak later. Once layers are added, finding a breach is harder. Work on a London roof is rarely simple to arrange, with parking, neighbours and access all to think about. That’s a good reason to find problems early, while there’s time to plan.
To find out what your survey will cost, call 07833 053749 or use the contact form with the address and some details. We will confirm the figure before booking.
Why book with us
- An independent view of the roof
- Weekday and weekend surveys
- 5,000+ surveys completed
- We hold a CAA Flyer ID and Operator ID
See how roof surveys are priced and what we found on two real jobs.
Also near Pollards Hill
Other services in Pollards Hill
What we do, step by step
The aim of the visit is simple: to see as much of the flat roof membrane as can safely be seen and record it clearly. Everything we note and photograph goes into the written report. It typically takes as long as needed for the roof’s area and construction, which we’ll explain when we quote. In Pollards Hill, 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, let us know as you book.
- We ask about the roof, its age, its membrane and where leaks appear inside.
- The roof is assessed to see if electronic testing will work on it.
- The testing method is chosen to suit the membrane and build-up.
- Testing runs across the roof to locate breaches in the membrane.
- We send a report with photos of each breach so your roofer can repair it.
Before the survey
- Tell us about parking before the day
- Have any questions written down, so nothing gets missed
- Make sure we can get to the back of the property
Arrange a survey
Most bookings start with a short call: ring 07833 053749 or email us, and we’ll ask about the building and what you need. The price is agreed before a date is set.
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What electronic leak detection doesn’t cover
We only report what can safely be seen on the day, so there are some things a survey cannot cover:
- Leaks from plumbing or windows
- How wet the insulation is
- Repairing the breaches (that’s for your roofer)
If you are not sure which survey you need, phone 07833 053749 or send us an email and we will give you a straight answer. What our survey covers.
What this survey covers
- Green roofs
- Roof terraces and balconies
- Flat roof membranes
- Commercial flat roofs
- Liquid-applied waterproofing
- Single-ply roofs
Common questions in Pollards Hill
Is my home in Pollards Hill listed or in a conservation area?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it’s in a conservation area. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Do you carry out roof surveys in Pollards Hill?
Yes, Pollards Hill is within the area we cover. We survey roofs across London and the South East. You can phone 07833 053749 or send us an email with the address and a few details.
Can you find leaks on a covered flat roof?
In some cases. The layers on top and the build-up below decide it, and some may need lifting. We will discuss it before we quote.
Do you climb onto every roof?
Only when it’s safe. Some roofs are too steep or fragile to walk on safely. We use safe viewpoints, the loft space and a drone where it applies, and the report records anything we couldn’t see.
What is electronic leak detection?
It uses an electrical current to find breaches in a flat roof membrane. The current only gets through where the membrane is breached so we can pinpoint it.
What if it rains on the day?
It depends on the weather and the survey. Strong wind or a downpour can make access unsafe and ground a drone, so we’d move the date with you.
Which days do you carry out surveys?
We carry out surveys seven days a week. To find a day that suits you, phone 07833 053749 or email us.