Greater London · London and the South East
Electronic Leak Detection in Mortlake
Not sure what state the flat roof membrane is in? We carry out electronic leak detection in Mortlake and across Greater London.
- Holes around roof penetrations
- A flat roof leak that cannot be traced
- Failed seams and laps
About our electronic leak detection in Mortlake
Our ELD report shows where each breach was found with photos. It tells your roofer exactly where to repair instead of hunting for the leak. Repair costs are not part of the report; that’s for your roofer to price. Testing again after repairs can confirm the breaches have been dealt with, where the roof still suits the method. Results come in a written report with photos. We survey commercial flat roofs, liquid-applied waterproofing and green roofs, and common reasons people get in touch are waterproofing to test before it’s covered and leaks under green or ballasted roofs.
On a London roof terrace or a flat roof over a back addition, water often runs under the covering before it shows. Upstands against parapets, outlets and the edge where flat meets pitched are common entry points. In a block or conversion in Mortlake, the flat roof is often a shared part of the building.
After the visit, you get a report with photos, sent by email. It sets out the condition of the flat roof membrane, any defects and our written recommendations.
- Place
- Mortlake (SW14, SW13, SW15)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- Survey days
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Call
- 07833 053749
- Last updated
- 27 October 2026
The survey, 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. The visit normally takes a length of time set by the membrane area and the build-up, which we set out in the quote. In a London area like Mortlake, the main things to sort out are parking and access: let us know about parking, the floor the property is on, any shared entrance and loft access. On the day, the roof is looked at from ground level, from windows, from inside the loft space and from the roof where it is safe.
- First, we confirm which roof areas are included.
- We get the roof ready for testing.
- Testing runs across the agreed area.
- Each breach found is located and recorded.
- You receive the results to pass to your roofer.
Getting ready for the survey
- Have any paperwork from past roof work to hand
- Tell us about parking before the day
- Have any questions written down, so nothing gets missed
Arrange a survey
For a price for electronic leak detection in Mortlake, ring 07833 053749 or send us an email. A few details about the property and the roof help us price the survey accurately.
Read more
Also near Mortlake
More services for Mortlake
What we can’t see
Our findings are based on what we can see safely on the day, so some things are outside what a survey can do:
- Fixing the holes we find
- Leaks from walls, copings or rooflights
- Some conductive membranes
If you’re not sure which survey you need, phone 07833 053749 or drop us an email and we will give you a straight answer before you book. What a survey covers and doesn’t.
What we check
- Flat roof membranes
- Roof terraces and balconies
- Commercial flat roofs
- Single-ply roofs
- Liquid-applied waterproofing
- Green roofs
Tips that help
These tips come from what we see on roofs every week:
- Check new waterproofing before handover
- Get leaks traced quickly
- Keep outlets clear of debris
- Avoid repeated repairs without finding the cause
Wet insulation may need attention after a leak. Your roofer can advise on that, and moisture readings can help.
Clear flat roof outlets regularly. Standing water puts more pressure on any weak point.
Questions from Mortlake
Will parking be an issue for a roof survey in Mortlake?
It can be, so it helps to tell us about permits, visitor bays or off-street space as you book. The visit is then planned around what’s available.
Does a conservation area affect roof work in Mortlake?
Start with Historic England’s list for listing and your council for conservation areas. It’s worth checking before planning roof work, as both can affect what’s allowed.
Does electronic leak detection work on all membranes?
Not every roof is suitable. Certain membranes are conductive, and some build-ups lack a suitable layer below. We will tell you if yours is not suitable at the start.
Are you insured?
Every survey is covered by professional indemnity and public liability insurance, and details are available on request.
Is this an asbestos survey?
No. Asbestos surveys and sampling aren’t something we do. Where a material might contain it, such as old cement sheets on a building from before 2000, the report flags it.
What is electronic leak detection?
It uses an electrical current to find breaches in a flat roof membrane. A breach lets the current through, which shows us where the hole is.
Do you look in the roof space?
Where it’s relevant to the survey and there’s safe access, yes. A clear path to the hatch helps.
Flat roofs in Mortlake
Alongside Victorian and Edwardian terraces, outer London has a great many interwar semis, frequently with hipped roofs of clay or concrete tiles. If your home in Mortlake is one of them, bay roofs, hips and later dormers each have their own details. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. Chiswick House, about 1.3 miles north, is one of the historic houses in the wider area around Mortlake. 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, and any change of roofing material on a listed home needs checking with the council first.
For site and facilities teams at buildings like Thomson House School, a large flat roof with a good many outlets and rooflights has many places where a membrane can fail. Controlled parking zones are common in London, so mention any permit rules for Mortlake. For landlords with property near Mortlake station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Mortlake is about 3 miles west of Fulham, in Greater London. In Mortlake, as across Greater London, every roof gets the same careful survey. Our area takes in places right across Greater London, from the larger towns to small villages. We also survey roofs in London.
All of SW14, SW13 and SW15 is within our area for electronic leak detection, from the main roads to the quietest streets. You will find streets such as Elm Road, Well Lane and Coval Road, and we cover them all. Mortlake is on the A3003, so it is easy for us to get to. Close by, we survey roofs in East Sheen (1 mile south-west), North Sheen (1 mile north-west), Barnes (1 mile north-east), Grove Park (1 mile north) and Roehampton (1 mile south-east). Further out, we also cover London (8 miles east), City of Westminster (6 miles north-east), Marylebone (6 miles north-east), Kensington (4 miles north-east), St Pancras (8 miles north-east) and Shoreditch (9 miles north-east).
Around Mortlake
In Mortlake, that means homes and buildings near Richmond Park Academy, Hare and Hounds pub and Palewell Park and the streets around them. There’s a railway station in Mortlake itself: Mortlake station. Other landmarks nearby include Ubuntu Museum: African Museum of Humanity (1.1 miles south-east) and Barnes Hospital (under half a mile east). The countryside around Mortlake includes Richmond Hill and Kew Gardens Lake.
Landlord and commercial surveys in Mortlake
We also survey roofs for businesses and commercial landlords, including offices, shops and units. Bigger roofs take more time, so they’re priced to suit.
An agent can book and manage the survey for a landlord, and the report can go to both. Access is agreed with the tenant beforehand.
Leave it or get it looked at?
Some flat roof leaks come from walls or details. Testing shows whether the membrane is breached, so other causes can be checked. In Mortlake, 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. Dealing with it early is far less disruptive.
Every price we give includes 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 survey before booking.
Why choose Independent Roof Survey in Mortlake
- PI and public liability insurance
- 5,000+ surveys completed
- Drone and thermal imaging surveys available
- Every finding written up with photos
Take a look at what a roof survey costs or our case studies.
Should I look at the roof myself first?
A lot can be seen from the ground. With binoculars, look for slipped or missing slates and tiles, gaps along the ridge and leaning chimneys. Never climb onto the roof to look.
Watch the gutters in a downpour, from a window or the ground. Overflowing water can be a sign of a blockage or a gutter that has dropped.