Greater London · London and the South East
Carshalton Electronic Leak Detection
Independent electronic leak detection in Carshalton. More than 5,000 surveys completed across London and South East England.
- Leaks at pipes, outlets or fixings
- Leaks under green or ballasted roofs
- New roofs to check before paving or planting
Electronic leak detection in Carshalton
Water can travel under a flat roof membrane before it shows inside. That makes leaks hard to trace by eye. ELD tests the waterproofing directly, to find where it has been breached. It is testing only and leave the repair to your roofer. On suitable roofs, it replaces guesswork with a located breach. The results then follow in a written report with photos. If you are worried about breaches hidden under paving or planting and new roofs to check before paving or planting, a survey will tell you what’s going on, whatever the roof.
On a London roof terrace or a flat roof over a back addition, water often runs under the covering before it shows. Outlets, upstands against parapet walls and joins with the main roof are frequent culprits. In a converted house in Carshalton, the roof above may belong to the building rather than one flat.
Pictures do a lot of the work in our reports, so you can see each defect rather than just read about it. Anything out of sight on the day is listed as such.
- Where
- Carshalton (SM5, SM1, SM6)
- Wider area
- Greater London
- Price
- Quoted for your roof
- Reports
- Written, with photos, emailed to you
- Appointments
- Weekdays and weekends
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
Practical tips
Getting the most from electronic leak detection starts before we arrive and carries on afterwards. Tips:
- Use boards when working on the roof
- Find the breach before more patching
- Have roof specifications to hand
- Consider ELD before paving or planting goes on
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.
Roof by roof
EPDM rubber roofs
Certain rubber membranes are conductive which can limit electronic testing. We will tell you if yours is not suitable.
Liquid-applied waterproofing
Small holes in liquid waterproofing may leak. Where the roof suits it, testing can find them.
Local flat roofs in Carshalton
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. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere. With Nonsuch Mansion about 2.7 miles west, Carshalton sits in an area with a long building history. Older roofs in the wider area can hide decades of patch repairs, so the detail matters.
Shop and office owners around Centrale Croydon may find that a flat roof over a business is out of sight and out of mind until it leaks. If you own a rental within reach of Carshalton station, a flat roof over a rented flat is easy to forget until the tenant reports a leak.
Carshalton is about 4 miles south-east of Wimbledon, in Greater London. We carry out electronic leak detection in Carshalton for houses, flats, blocks and commercial buildings, with a written report and photographs every time. Our Greater London coverage includes Carshalton and the places around it. There is also a page for London.
Surveys in SM5, SM1 and SM6 are booked the same way as anywhere else. We cover properties on Station Road, High Street and The Square. With the B277 and B278 close by, Carshalton is simple for us to get to for electronic leak detection. Close by, we survey roofs in The Wrythe (1 mile north), Wallington (1 mile east), St Helier (1 mile north-west), Rosehill (1 mile north-west) and Benhilton (1 mile west). Larger places within reach include London (10 miles north), City of Westminster (10 miles north), Marylebone (10 miles north), Kensington (9 miles north), St Pancras (11 miles north) and Shoreditch (12 miles north).
Near you in Carshalton
Typical jobs here are in homes near The Railway Tavern, Carshalton Park and Sutton College of Learning for Adults and the streets around them. There is a railway station in Carshalton itself: Carshalton station. Other landmarks nearby include St Helier Hospital (1 mile north-west) and Centrale Croydon (2.9 miles east). Open spaces near Carshalton include Duppas Hill and Sutton Ecology Centre Grounds.
What happens on the day
After the inspection, everything we found is written up in a report with photos, sent to you by email. On timing, most surveys take longer on a large roof than a small one, and the build-up of the roof makes a difference too. In Carshalton, visits are available on weekdays and at weekends. London parking is frequently by permit or pay-and-display, so it helps to know what’s near you. A back bedroom window can be the best vantage point for a rear addition, so we may ask to use one.
- We agree the area to be tested.
- 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.
Getting ready for the survey
- Keep pets out of the way during the survey
- Have keys ready for side gates, garages or roof access doors
- Have any questions written down, so nothing gets missed
Getting a price
Getting a price is simple: just call 07833 053749 or send us an email and give us some details about the property and we’ll explain which survey suits. We confirm the price before anything is booked.
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Carshalton questions
Is parking a problem for a survey in Carshalton?
It depends on the street. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
Do you carry out roof surveys in Carshalton?
Yes, Carshalton is one of the places we work. The survey and report are the same in Carshalton as anywhere else.
Is it a structural engineer’s report?
No. Visible signs such as deflection or sagging are recorded, but we don’t provide calculations or an engineer’s opinion. If one is needed, the report says so.
How much does electronic leak detection cost?
We quote electronic leak detection for each roof, as the method and time depend on the roof. The price depends on the roof’s size and build-up. For a quote, call 07833 053749 or send us an email.
Do you use drones?
Yes, where it is applicable. Whether we can fly on the day depends on the weather and the airspace rules, and we check for restrictions near airports before flying. We are a CAA-registered drone operator.
Will you go up on the roof?
Only where it is safe to do so. We look at everything that can be seen safely: from ground level, from windows and vantage points, from the loft space, from the roof itself where safe and by drone where applicable. The report says if anything couldn’t be seen.
How many surveys have you done?
More than 5,000 surveys over 20+ years, across London and South East England.
How we price electronic leak detection
All our prices include VAT. The things that change the price are:
- The roof’s overall size
- The use of thermal imaging or a drone
- Whether it is a home or a commercial building
- How many separate roofs there are, such as extensions, dormers and garages
Larger roofs, taller buildings and commercial roofs take longer, so the price reflects that. The price is confirmed before booking.
Getting in touch
We will typically ask about:
- Whether there is a loft hatch, a shared roof or tricky access
- Any marks or damp showing indoors
- Photos of the roof, taken safely from ground level or a window
- Where the property is, with the postcode
For a price for electronic leak detection in Carshalton, call 07833 053749 or use the contact form. The address, the type of property and what you want to find out help us price the survey accurately.
Nearby places to Carshalton
What else we do in Carshalton
Rented homes, blocks and businesses
We also survey roofs for businesses and commercial landlords, from shops and offices to industrial units. Bigger roofs take more time, so they’re priced to suit.
Landlords, agents and building managers in Carshalton and across Greater London can book any of our surveys. For a price for a let property or a block, ring 07833 053749 or email us.
What we are asked to look at in Carshalton
Joints and laps in a membrane can fail over time. Small openings at laps can leak for months before it shows.
Typical things we are asked to look at include:
- Leaks under green or ballasted roofs
- New membranes needing a check before handover
- Leaks at pipes, outlets or fixings
- Failed seams and laps
If you own one of the older houses in the streets near Church of All Saints, flat-roofed rear additions and dormers added over the years are worth checking.
Questions to ask before you book
- Which viewpoints they use to see the roof
- What experience they bring
- What happens after the report arrives
- Whether the loft space is looked at, where there is one