Greater London · London and the South East
Dormers Wells Electronic Leak Detection
We carry out electronic leak detection in Dormers Wells and the rest of Greater London. Surveys run on any day of the week.
- Holes around roof penetrations
- Leaks under green or ballasted roofs
- A flat roof leak that can’t be traced
Electronic leak detection for homes and businesses in Dormers Wells
Our ELD report shows where each breach was found, with photos. Your roofer can then repair those points rather than guessing. We do not estimate repair costs, so your roofer prices the work. Testing again after repairs can confirm the breaches have been dealt with if the build-up allows. You get a photo-illustrated written report. Common reasons to book are punctures from foot traffic or tools and leaks showing away from the breach, across single-ply roofs, green roofs and flat roof membranes.
London has a lot of flat roofs: rear additions, dormers, roof terraces and the roofs of blocks and offices. Coverings range from felt and asphalt to EPDM rubber, GRP fibreglass and single-ply membranes, each with its own weak points. Which one is on a roof in Dormers Wells shapes how it’s checked. Older flat roofs are often felt or asphalt, newer ones rubber or GRP.
The report does not just list problems. It explains what we found, why it matters and what we recommend, so you can decide what to do next.
- Place
- Dormers Wells (UB1, UB6, UB2)
- Wider area
- Greater London
- Price
- Quoted for your roof
- Report
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
What we’re asked to look at in Dormers Wells
If a flat roof keeps leaking after patching, the hole may be elsewhere. Electronic testing helps pinpoint it.
Look out for signs like these:
- Water coming in under a flat roof
- Leaking laps in the waterproofing
- Leaks under green or ballasted roofs
- Repairs that haven’t stopped the leak
If you run a business near Treaty Centre, a flat roof over a business is out of sight and out of mind until it leaks.
Questions to ask before booking
- How they’ll see the roof: from ground level, the loft, the roof or by drone
- What they will not be able to tell you
- Will the report include photos?
- Is there a chance to talk the report through?
What else we do in Dormers Wells
Why act early in Dormers Wells
Repairs in the wrong place leave the leak in place. ELD shows the actual breach points. Blocked gutters and hoppers on London houses overflow and soak brickwork, which can lead to damp inside. A small blockage left for a few winters becomes a damp problem.
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. We confirm the price for your survey before booking.
Why us?
- A report with photos
- CAA-registered drone operator (Flyer ID and Operator ID)
- Two decades and more of roof surveys
- Surveys on any day of the week
See what a roof survey costs or what we found on two real jobs.
What a survey costs
What a survey costs depends on the time and equipment it needs. The main factors are:
- Extra roofs, like extensions, dormers or garages
- Any need for thermal images or a drone flight
- How big the roof is
- The shape of the roof and its details
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. You’ll know the figure before booking.
Booking your survey
The more you let us know, the easier it is to price the survey. When you contact us, it is useful to mention:
- The style of property, from a terrace to a block
- Your timetable, like an exchange date
- Anything about access we should know
- Any stains, drips or damp patches you’ve seen indoors
To book a survey, ring 07833 053749 or use the contact form with the address and what you’d like to know about the roof. We will confirm the price before you book.
What we look for on each type of roof
EPDM rubber roofs
EPDM rubber roofs often last 30–50 years, but can still be punctured.
Liquid-applied waterproofing
Testing a liquid-applied roof depends on what’s beneath the coating.
Flat roofs in Dormers Wells
Osterley House, about 1.9 miles south, is one of the historic houses in the wider area around Dormers Wells. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and a listed home or one in a conservation area may need consent for changes of material. Outer London has plenty of Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, frequently with hipped roofs in clay or concrete tiles. Hips, bay roofs and later loft conversions are typical of those semis, if your home is one of them. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
Dormers Wells is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. Take a building like Dormers Wells Junior School: schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks.
Dormers Wells is about 1 mile north-east of Southall, in Greater London. We visit Dormers Wells as part of our work across Greater London. Across Greater London, we cover Dormers Wells and the places around it. You can also see our page for London.
We survey roofs across UB1, UB6 and UB2 for electronic leak detection and the streets around it. We offer electronic leak detection to properties on Swan Road, North Road and Meadow Road. Dormers Wells is on the A4020, so it’s easy for us to get to. Nearby, we also carry out electronic leak detection in Southall (1 mile south-west), West Ealing (1 mile south-east), Hanwell (1 mile south-east), Yeading (2 miles north-west) and Yiewsley (2 miles north-west). Further out, we also cover London (12 miles east), City of Westminster (9 miles east), Marylebone (9 miles east), Kensington (7 miles east), St Pancras (11 miles east) and Shoreditch (12 miles east).
Landmarks near Dormers Wells
We work in homes and buildings around Dormers Wells High School, The Plough pub and Castle Bar Park, among other places. The nearest railway station is Southall station, roughly 0.9 miles south-west of the centre. A little further out are St Bernard's Hospital (0.9 miles south-east) and Gunnersbury Park House - Large Mansion (3.5 miles east). For a walk, there’s Northala Fields and Litten Nature Reserve.
The survey, step by step
A survey visit follows a simple order: we listen to what’s been worrying you, inspect the roof from every safe vantage point, photograph what we find and make notes for the report. It normally takes more time on a big roof than a small one, with the construction of the roof playing a part too. In Dormers Wells, 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. Mention any building rules, key holders or managing agents when you book.
- You let us know about the roof and where water is showing.
- We check whether the membrane and build-up suit ELD.
- We choose a low-voltage or high-voltage method to match the roof.
- The membrane is tested and breaches are found.
- A report with photographs shows where each breach is.
Preparing for the visit
- Have keys ready for side gates, garages or roof access doors
- Make sure the loft hatch can be reached
- Make a note of anything you’d like us to look at
Booking a survey
Getting a price is simple: just call 07833 053749 or use the contact form and give us some details about the property and we will suggest the right survey. The price is agreed up front.
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Questions from Dormers Wells
Do you carry out roof surveys in Dormers Wells?
Yes, Dormers Wells is one of the places we work. The survey and report are the same in Dormers Wells as anywhere else.
Is parking a problem for a survey in Dormers Wells?
Typically it is manageable with a little notice. Let us know the parking rules on your street and we will work around them.
Are you structural engineers?
No. Visible signs such as deflection or sagging are recorded, but we don’t provide calculations or an engineer’s opinion. The report will say if you need an engineer.
How long does electronic leak detection take?
It depends on the size of the roof and its build-up. We’ll give you an idea when we quote.
What do I do with the report?
We email you the written report with photographs and recommendations. You can use it to talk to a seller, an insurer, a roofer or a managing agent, whichever applies.
How is ELD priced?
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 drop us an email.
Is the repair part of the test?
No. We test the membrane and report. You get the breach locations with photos for your roofer to repair.
Checking the roof from the ground
Your own check is a good start, but it isn’t a survey. You won’t see flashings, valleys or the backs of chimneys properly from ground level.
Inside, the loft is a good place to look, with care. Take a torch and only step on boards or joists, checking for stains, damp wood or chinks of daylight.