Greater London · London and the South East
Heston Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes in Heston. We’ve completed more than 5,000 surveys across London and the South East.
- Leaks at pipes, outlets or fixings
- New membranes needing a check before handover
- Leaks that return after repairs
Electronic leak detection for homes and businesses in Heston
ELD can be carried out in more than one way. Low-voltage testing is typically done with the surface wet, while high-voltage testing needs a dry, exposed membrane. Which one suits depends on the membrane and the layers of the roof, and we’ll explain our choice. If neither method suits your roof, we will tell you before any testing starts. We are frequently asked to look into damage from equipment installers and new roofs to check before paving or planting, on roof terraces and balconies, commercial flat roofs and flat roof membranes.
Water getting through a flat roof in London can travel under the covering and appear some way from the hole. Upstands against parapets, outlets and the edge where flat meets pitched are common entry points. In a converted house in Heston, the roof above may belong to the building rather than one flat.
Every survey ends with a written report, with photographs, sent by email. It explains the condition of the flat roof membrane, the defects we found and what we recommend.
- Location
- Heston (TW5, UB2, TW3)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- Survey days
- Monday to Sunday, daytime
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
Why it is worth a survey now in Heston
Some flat roof leaks come from walls or details. Testing shows whether the membrane is breached, so other causes can be checked. A hidden valley or parapet gutter on a London house can hold water for weeks before anyone notices. When the stain finally shows, the damage underneath is often older than it looks.
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 us in Heston
- An independent view of the roof
- Covered by professional indemnity and public liability insurance
- Visits on any day of the week
- We hold a CAA Flyer ID and Operator ID
Read what a roof survey costs and our case studies.
What you can safely check yourself
Look up at the roof after a storm, from the ground: pieces of tile or slate on the ground, a gap in the ridge or a lifted flashing are all worth noting. Leave anything above ground level to a survey.
Inside, the loft is a good place to look, with care. Take a torch and only step on boards or joists, and look for staining, damp timber or daylight coming through.
How the survey changes by roof type
Single-ply membranes
Many offices and units have single-ply roofs. Seams and penetrations are typical breach points.
Green and ballasted roofs
ELD is easier on a new roof before it’s covered.
What we’re asked to look at in Heston
When the membrane is buried, holes cannot be seen at all. ELD can work on some covered roofs though it depends on the layers.
Common reasons to book include:
- Stains far from any visible defect
- New membranes needing a check before handover
- Breaches hidden under paving or planting
- Water coming in under a flat roof
Osterley House lies about 1.2 miles east, so building around Heston goes back a long way. On a period home nearby, any flat roof is likely to be a later addition with its own lifespan.
What to check before booking
- How long they’ve been surveying roofs
- Whether the inside of the roof is included
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
- What happens after the report arrives
Tips from our surveys
A few practical points come up again and again on our surveys. They apply to most roofs:
- Let us know about the membrane and build-up if you know it
- Act on new leaks promptly
- Avoid repeated repairs without finding the cause
- Keep outlets clear of debris
File the report with your roof paperwork. It shows the condition of the membrane on that date.
Keep people off the flat roof unless they need to be there. Many breaches come from foot traffic.
Heston: your questions answered
How do I find out if my home in Heston is listed?
Your council is the best source, with Historic England’s list for listed buildings. Both listing and conservation areas can limit changes of roofing material.
Do you look at commercial flat roofs near Heston, such as hotels?
Yes, commercial flat roofs are part of what we cover. For a bigger roof, you’ll get a quote based on the building.
Do you survey roofs on blocks of flats?
Yes, once whoever controls the roof agrees access. On a shared roof we can only inspect the parts we are allowed to reach.
Can you survey in bad weather?
Light rain is normally fine; heavy rain and wind are different. Strong wind or heavy rain can make access unsafe and ground a drone, so we’d move the date with you.
What happens after the survey?
The report comes by email, and what you do next is up to you: raise it with a seller, send it to an insurer, brief a roofer or share it with a managing agent.
Is it a structural engineer’s report?
No. We point out what can be seen, like sagging or deflection, but we are not structural engineers and don’t carry out calculations. Where an engineer is needed, we say so in the report.
Do you cover Heston for electronic leak detection?
Yes. We survey roofs in Heston and the rest of Greater London, as part of our work across London and the South East. For a price, call 07833 053749 or send us an email.
What electronic leak detection looks like in Heston
There are several hotels within about a mile and a half of Heston, and like offices and blocks, hotels frequently sit under flat roofs. If you look after one, a leak through a flat roof can put a room out of use. Alongside Victorian and Edwardian terraces, outer London has a great many interwar semis, often with hipped roofs of 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.
For an older house near a landmark like St Leonard's Church, any flat roof added at the back or on a dormer is likely to be far younger, and less durable, than the main roof. Landlords with a home close to Southall station may find that a flat roof over a rented flat is easy to forget until the tenant reports a leak.
Heston is about 2 miles south of Southall, in Greater London. We cover Heston and the rest of Greater London, as part of our work across London and the South East. We cover towns and villages across Greater London, from the larger towns to small villages. We also survey roofs in London.
Postcode districts we cover here for electronic leak detection: TW5, UB2 and TW3. Streets in the area include Fern Lane, Sutton Road and Eton Avenue, and we cover them all. With the A3005 close by, Heston is simple for us to get to for electronic leak detection. Neighbouring places we cover for electronic leak detection include North Hyde (1 mile north), Norwood Green (1 mile north-east), Lampton (1 mile south-east), Hounslow West (1 mile south) and Osterley (1 mile east). We also work in nearby towns such as London (12 miles east), City of Westminster (10 miles east), Marylebone (10 miles east), Kensington (8 miles east), St Pancras (12 miles east) and Shoreditch (13 miles east).
Local landmarks in Heston
In Heston, that means homes and buildings near Inwood Park, The Plough Public House and Heston Community School. Heston’s nearest station is Southall station, about 1.4 miles north. Well-known places in the area include Museum of Army Music (2.4 miles south-east) and Treaty Centre (1.3 miles south-east). Green spaces nearby include Northala Fields and Crane Meadows.
What happens on the day
A survey visit follows a simple order: we hear what you’ve seen, inspect the roof from every safe viewpoint, take photographs as we go and make notes for the report. It typically takes longer on a large roof than a small one, with the construction of the roof playing a part too. In Heston, as in much of London, a good many properties are flats or terraces without side access, so rear slopes are viewed from windows, the loft or, where a flight is allowed, by drone. Mention any building rules, key holders or managing agents when booking.
- We start with what you know about the roof and the leak.
- The roof is assessed for suitability first.
- We choose a low-voltage or high-voltage method to match the roof.
- The membrane is tested and breaches are found.
- You get a report with photos of each breach.
Getting ready for the survey
- Check the loft hatch can be reached
- Have any questions written down, so nothing gets missed
- Keep pets inside or away from the areas we’re looking at
Getting a price
To arrange a survey, call 07833 053749 or email us and tell us the address and what’s prompted the survey. We will confirm the price before you book.