Greater London · London and the South East
Electronic leak detection in Headstone, Greater London
Know where you stand with the flat roof membrane before you decide what to do next. We carry out electronic leak detection in Headstone, with photographs and a clear written report.
- Patched roofs that still leak
- Stains far from any visible defect
- Leaking laps in the waterproofing
How electronic leak detection works in Headstone
Some flat roofs can’t be tested electronically. Certain membranes conduct electricity and some roofs do not have a suitable layer beneath the membrane. If your roof isn’t suitable, we’ll tell you before any testing. Any details you have about the membrane and build-up help us decide, like drawings or specifications. It avoids arranging a test that can’t give results. If you’ve noticed leaks under green or ballasted roofs and leaking laps in the waterproofing, we can find out what’s behind it, on flat roof membranes, green roofs and single-ply roofs alike.
Offices, shops and blocks of flats across London often have large flat roofs with plant, rooflights and walkways. Each pipe, upstand and fixing through the covering is a possible weak point. In Headstone, roof access is agreed with the building manager or owner beforehand. Rooflights, plant supports and pipe entries are common places for a membrane to fail.
We write the report in plain English, so you don’t need to be a roofer to follow it. Photographs show what each point refers to, and recommendations are put with the most urgent first where relevant.
- Location
- Headstone (HA5, HA3, HA2)
- Region
- Greater London
- Price
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Survey days
- Monday to Sunday, daytime
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
Flat roofs in Headstone
In outer London, interwar semis with hipped, tiled roofs sit alongside older slate-roofed terraces. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. With Headstone Manor about 0.6 miles south-east, Headstone sits in an area with a long building history. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and a listed home or one in a conservation area may need consent for changes of material.
Take a building like Pinner Park Primary School: ponding and blocked outlets on a wide flat roof are worth catching before the next wet season. If you let a flat or house near Headstone Lane station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Headstone is about 1 mile east of Hatch End, in Greater London. If you are in Headstone, booking works exactly as it does anywhere else: a call or an email, a price, then a date. We cover towns and villages across Greater London, from the larger towns to small villages. There is also a page for London.
All of HA5, HA3 and HA2 is within our area for electronic leak detection, from the main roads to the quietest streets. That includes homes and businesses on Anselm Road, Ufford Road and Chantry Road. Neighbouring places we cover for electronic leak detection include Hatch End (1 mile west), Harrow Weald (1 mile east), South Oxhey (2 miles north-west), Belmont (2 miles east) and Carpenders Park (2 miles north-west). We also work in nearby towns such as London (14 miles south-east), City of Westminster (11 miles south-east), Marylebone (11 miles south-east), Kensington (10 miles south-east), St Pancras (12 miles south-east) and Shoreditch (13 miles south-east).
Local landmarks in Headstone
Typical jobs here are in homes near The Moon & Sixpence pub, Hatch End High School and Headstone Manor Recreation Ground. There’s a railway station in Headstone itself: Headstone Lane station. A little further out are Hilfield Castle (3.8 miles north) and Kodak Museum (1 mile south-east). For a walk, there is Harrow Weald Common and Northala Fields.
Why act early in Headstone
ELD before paving, ballast or planting goes on is simpler. Covered roofs are harder to test. In Headstone, as across London, an overflowing gutter soaks the wall below. A blocked outlet ignored for a winter or two can mean damp walls inside.
To find out what your survey will cost, ring 07833 053749 or email us with the address and some details. The price is agreed before a date is set.
What you get with us
- Two decades and more of roof surveys
- Thermal imaging and drones used where they help
- 5,000+ surveys completed
- A written report with photos
Your questions about electronic leak detection in Headstone
Does a conservation area affect roof work in Headstone?
Start with Historic England’s list for listing and your council for conservation areas. Either can affect what roof work is allowed, so it’s worth checking before planning any.
Can parking be tricky for a visit in Headstone?
London parking needs a little planning, so let us know about permits, bays or a driveway as you book. That way the visit can be planned around it.
What does the report include?
It explains what we saw, what it means and what we’d suggest, with photographs throughout. It also says if any part of the roof couldn’t be seen safely, so you know exactly what was covered.
Can you find leaks on a covered flat roof?
On some roofs, yes. Covered roofs limit the methods we can use, so we check the build-up first.
How does ELD work?
The waterproofing membrane normally stops an electrical current, but a hole lets it through. That lets us find breaches that are too small to see.
How soon will I get the report?
The Premium Survey report comes the same day, the Standard within 24–48 hours and the Basic within 48 hours. Each one is emailed.
Do you survey on Saturdays and Sundays?
Surveys run on weekdays, Saturdays and Sundays. To find a day that suits you, ring 07833 053749 or use the contact form.
Landlords, agents and block managers in Headstone
Where a roof is shared: access has to be agreed with whoever owns or manages the building. Mention it when you contact us and we will plan the survey around it.
If the property is let, the agent or a tenant can let us in, at a time agreed in advance. Surveys run on weekdays, Saturdays and Sundays, which can make access easier.
Practical tips
You do not need to be a roofer to help. Here’s what helps most:
- Do not let outlets block
- Find the breach before more patching
- Use boards when working on the roof
- Keep a note of leaks after rain
If we think the leak is not coming through the membrane, the report says so, with a suggestion of what to check next.
Keep outlets and gutters on flat roofs clear. Water that sits on the roof finds breaches faster.
How the survey works
Every roof is different, but as a rough guide the survey takes a time that depends on the roof’s area and construction, which we set out in the quote. If you have questions on the day, just ask. In converted houses and mansion blocks, the loft hatch is frequently on a shared landing. If that applies to your building, it helps to agree access with the neighbours or the managing agent first. Otherwise, the visit in Headstone runs like any other.
- We start by finding out what the roof is made of and where it leaks.
- We confirm whether the roof is suitable for electronic testing.
- The method depends on the membrane and what sits above and below it.
- The roof is tested and any breaches are located.
- You get a report showing where each breach is, for your roofer to repair.
How to prepare
- Move anything stored under the loft hatch
- Tell us about any leaks, stains or damp patches you know of
- Jot down any questions you want answered
Booking a survey
Every survey is priced before it’s booked, so you know the cost up front. Electronic leak detection is quoted for your roof, because the method depends on the roof. To book, ring 07833 053749 or drop us an email.
Read more
How the survey changes by roof type
Green and ballasted roofs
Green roofs and ballasted roofs cover the waterproofing. Testing may still be possible but it depends on the layers.
Single-ply membranes
Single-ply membranes are common on commercial and newer roofs. Seams and penetrations are typical breach points.
What we are asked to look at in Headstone
Joints and laps in a membrane can fail over time. Small openings at laps can leak long before anyone notices.
People normally book a survey after spotting something like this:
- Leaks that return after repairs
- Leaks at pipes, outlets or fixings
- New roofs to check before paving or planting
- Leaks through a covered membrane
If you look after a shop, office or commercial unit, for example near St. George's Shopping Centre, flat roofs over shops and units are easy to forget until water comes through a ceiling.
Before you book any roof surveyor
- When you’ll get the report
- Their insurance cover
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
- Their track record with similar roofs