Greater London · London and the South East
Wandsworth Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes for Wandsworth, from an experienced roof surveyor. Every survey comes with a written report and photographs.
- Damage from equipment installers
- Leaks through a covered membrane
- A flat roof leak that can’t be traced
How electronic leak detection works in Wandsworth
ELD suits many waterproofing membranes on flat roofs, on homes, blocks and commercial buildings. 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 when conditions allow. Let us know about your roof to find out more. We survey green roofs, liquid-applied waterproofing and roof terraces and balconies, and people most often book us about waterproofing to test before it’s covered and water coming in under a flat roof.
Offices, shops and blocks of flats across London frequently have large flat roofs with plant, rooflights and walkways. Every penetration and upstand is a place where a membrane can fail. For a building in Wandsworth, access is agreed with whoever manages the roof ahead of the visit. Rooflights, plant supports and pipe entries are common places for a membrane to fail.
The report doesn’t just list problems. For each finding, it explains what it is, why it matters and what we’d recommend, so you can decide what to do next.
- Place
- Wandsworth (SW18, SW15, SW11)
- Wider area
- Greater London
- Cost
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Appointments
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Updated
- 27 October 2026
What affects the cost of electronic leak detection
We confirm the price for the job before you book. This is what makes a difference:
- Extensions, dormers and garages with roofs of their own
- The roof’s overall size
- The type of building, from a house to a block or an office
- Building height and the viewpoints available
Larger roofs, taller buildings and commercial roofs take longer, so they’re priced to match. The price is confirmed before booking.
Helping us price your survey
To price your survey accurately, we’ll ask about:
- Anything about access we should know
- Your timetable, such as an exchange date
- The address and postcode of the property
- Why you want a survey: buying, a leak, a storm or new work
Getting a price is simple: just phone 07833 053749 or drop us an email and give us a few details about the property and we’ll explain which survey suits. We confirm the price before anything is booked.
What we cannot see
Every survey has limits, and it’s better to know them up front. Bear these in mind:
- Moisture spread under the membrane
- Leaks from walls, copings or rooflights
- Carrying out the repair work
Not sure which survey suits your roof? You can call 07833 053749 or send us an email and we’ll tell you before you book. What a survey covers and does not.
What this survey covers
- Single-ply roofs
- Commercial flat roofs
- Roof terraces and balconies
- Flat roof membranes
- Liquid-applied waterproofing
- Green roofs
How it works
After the inspection, everything we found is written up as a report with photos. As for time on site, most surveys take a time that depends on the size of the roof and how it’s built, which we’ll explain when we quote. In converted houses and mansion blocks, the loft hatch is often on a shared landing. If that applies to your building, it helps to agree access with the neighbours or the managing agent first. Everything else is planned around the building, not the postcode.
- We agree the area to be tested.
- The surface is prepared for the chosen method.
- We work across the roof with the test equipment.
- We mark the breach locations in our records.
- You receive the results to pass to your roofer.
Preparing for the visit
- For flats, make sure roof access has been agreed
- Clear the way to the loft hatch
- Tell us about any leaks, stains or damp patches you know of
How to book
To arrange a survey, ring 07833 053749 or drop us an email and let us know the address and what’s prompted the survey. You will know the price before anything is booked.
Related advice
What happens if roof problems are left?
Water trapped under a membrane can soak insulation and decking. Locating it early helps limit the damage. A hidden valley or parapet gutter on a London house can hold water for weeks before anyone notices. By the time a ceiling stains, the timbers underneath may have been wet for a while.
For a price for your roof in Wandsworth, phone 07833 053749 or drop us an email with the address and some details. The price is agreed before a date is set.
Why us?
- Drone flown under a CAA Flyer ID and Operator ID
- Customer satisfaction of 98%
- Photographs and a written report every time
- Over 5,000 surveys carried out
Wandsworth: your questions answered
Is my home in Wandsworth listed or in a conservation area?
For listing, use Historic England’s list; for conservation areas, ask the council. The answer matters most when a change of material is on the cards.
Can you look at the flat roof of a hotel or office near Wandsworth?
Yes. As well as homes, we look at flat roofs on offices, hotels, blocks of flats and commercial units. Larger commercial roofs are quoted for the building.
How much does electronic leak detection cost?
Electronic leak detection is quoted for your roof, because the method depends on the roof. The price depends on the roof’s size and build-up. For a quote, call 07833 053749 or drop us an email.
Is this a RICS survey?
No. We’re experienced roof surveyors, and our survey covers the roof rather than the whole building. For the rest of the building, a RICS home survey is a separate job.
Can you inspect my roof with a drone?
Yes, where it is applicable. Our sub-250g drone is flown by a CAA-registered operator with a Flyer ID and Operator ID, and the airspace and weather are checked before every flight.
Which method do you use?
The method is chosen to suit the roof. Low-voltage methods are typically carried out on a wet roof and high-voltage methods need the membrane dry and exposed.
Are you insured?
We hold professional indemnity and public liability insurance, for every survey we carry out.
Nearby places to Wandsworth
More services for Wandsworth
Tips from our surveys
Here are a few things we’d tell any owner, before and after a survey:
- Don’t keep patching the same spot
- Stay off the flat roof unless needed
- Note where leaks show inside and when
- Have roof specifications to hand
Keep the report with the roof’s records. It shows the condition of the membrane on that date.
Consider testing a new membrane before it’s covered. Finding breaches is simpler at that stage.
Electronic leak detection around Wandsworth
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. If your home in Wandsworth is one of them, lead flashings, party-wall upstands and shared chimney stacks are part of the picture too. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere. Historic houses such as Fulham Palace, about 1.5 miles north-west, show how far back building in the area around Wandsworth goes. On older houses around here, roofs frequently 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.
The streets around a church such as St Anne's Church are frequently among the oldest in a place, and if you own one of the older houses nearby, later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear. If you run a hotel or guest house in or near Wandsworth, a roof problem can mean rooms out of use. For businesses in and around places such as Southside Wandsworth, outlets and upstands on commercial flat roofs are the places to check before trouble starts.
Wandsworth is about 3 miles south-west of Brompton, in Greater London. We survey roofs in Wandsworth and the surrounding area across London and South East England. Wandsworth is one of the places in Greater London we cover for electronic leak detection.
All of SW18, SW15 and SW11 is within our area for electronic leak detection, from the main roads to the quietest streets. Whether your property is on Alma Road, Marl Road and Knoll Road or anywhere close by, we can help. We also cover the places around Wandsworth: Southfields (1 mile south), Earlsfield (1 mile south), Hurlingham (1 mile north), Clapham Junction (1 mile north-east) and Battersea (1 mile north-east). Further out, we also cover London (5 miles north-east), City of Westminster (4 miles north), Marylebone (5 miles north-east), Kensington (3 miles north), St Pancras (6 miles north-east) and Shoreditch (7 miles north-east).
Landmarks near Wandsworth
Typical jobs here are in homes near Ashcroft Technology Academy, Emanuel School and Spread Eagle pub, among other places. Wandsworth has its own railway station: Wandsworth Town station. Other landmarks nearby include Southside Wandsworth (less than half a mile west) and Antique Breadboard Museum (1.4 miles north-west). Not far away are Battersea Park Lake and Henman Hill.
Landlords, agents and block managers in Wandsworth
Letting agents often book on a landlord’s behalf, with the report sent to whoever needs it. We agree a time with the tenant beforehand.
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. The report sets out what needs attention now and what can wait, which helps with budgets and planning.