Greater London · London and the South East
Electronic leak detection in Winchmore Hill, Greater London
Electronic leak detection to pinpoint holes in flat roof membranes across Winchmore Hill, with drones and thermal imaging where they help. Get in touch for a price.
- New membranes needing a check before handover
- Patched roofs that still leak
- Leaks under green or ballasted roofs
DIY checks: what’s safe
The one thing to avoid is getting up close. Slates, tiles, flat roofs and rooflights can give way, and a fall can be serious. That part is for a survey.
If you have a loft with safe access, take a look inside. Use a torch and stay on the joists or boards, and look for staining, damp timber or daylight coming through.
Electronic leak detection in Winchmore Hill: what you get
We carry out electronic leak detection on flat roofs in Winchmore Hill and across London and South East England. A visit typically takes a time that depends on the membrane area and the build-up, and we’ll give you a guide when quoting. Every roof is quoted on its size and build-up. You get a written report with photos. We survey green roofs, single-ply roofs and commercial flat roofs, and people most often book us about leaks through a covered membrane and leaks through a flat roof with no obvious cause.
London has a lot of flat roofs: rear additions, dormers, roof terraces and the roofs of blocks and offices. They’re covered in felt, asphalt, EPDM rubber, GRP fibreglass or single-ply membranes, and each fails in its own way. Which one is on a roof in Winchmore Hill shapes how it is checked. Older flat roofs are frequently felt or asphalt, newer ones rubber or GRP.
It is not only a list of defects. It explains what we found, why it matters and what we recommend.
- Location
- Winchmore Hill (N21, N13, N9)
- Region
- Greater London
- Cost
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- When we survey
- Weekdays, Saturdays and Sundays
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
Electronic leak detection around Winchmore Hill
Outer London has lots of Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, often 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. Mixed in with those pitched roofs are lots of flat ones, over rear extensions, dormers, garages and shops. With Bruce Castle about 2.6 miles south-east, Winchmore Hill sits in an area with a long building history. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs.
Anyone responsible for a site like St. Paul's School will know that a large flat roof with plenty of outlets and rooflights has many places where a membrane can fail. As a London address, Winchmore Hill can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. For businesses in and around places such as Edmonton Green Shopping Centre, the flat roofs over shops and commercial units are worth checking before a leak, not after.
Winchmore Hill is about 2 miles north-west of Edmonton, in Greater London. We survey roofs in Winchmore Hill and the surrounding area as part of our work across London and South East England. Our Greater London coverage includes Winchmore Hill. There is also a page for London.
We work across the N21, N13 and N9 postcode area for electronic leak detection and the streets around it. If you need electronic leak detection at a property on Farm Road, Arlow Road and Hurst Road or a nearby road, we can survey it. We also cover the places around Winchmore Hill: Bush Hill (1 mile north-east), Bush Hill Park (1 mile north-east), Enfield (1 mile north-east), Enfield Chase (2 miles north) and Edmonton (2 miles south-east). Further out, we also cover London (9 miles south), City of Westminster (9 miles south), Marylebone (8 miles south), Kensington (10 miles south-west), St Pancras (7 miles south) and Shoreditch (8 miles south).
Landmarks near Winchmore Hill
We work in homes and buildings around Winchmore School, Keble Preparatory School and The Kings Head pub. There’s a railway station in Winchmore Hill itself: Winchmore Hill station. Other landmarks nearby include Museum of Enfield (1.4 miles north-east) and Edmonton Green Shopping Centre (1.9 miles east). For a walk, there’s Darland's Lake and Barfield Allotments Nature Park.
Useful tips for Winchmore Hill property owners
You do not need to be a roofer to help. Here’s what helps most:
- Have roof specifications to hand
- Find the breach before more patching
- Limit access to the roof
- Check new waterproofing before handover
After your roofer repairs the breaches, a retest can confirm them, where the roof still suits the method.
ELD before paving, ballast or planting goes on is worth considering. Finding breaches is simpler at that stage.
Landlords, agents and block managers in Winchmore Hill
An agent can book and manage the survey for a landlord. We agree a time with the tenant beforehand.
Any of our surveys can be booked by landlords, agents and building managers in Winchmore Hill. For a price for a let property or a block, call 07833 053749 or email us.
Also near Winchmore Hill
What else we do in Winchmore Hill
Why act early in Winchmore Hill
Some flat roof leaks come from walls or details. Testing shows whether the membrane is breached, so other causes can be checked. In a London terrace or conversion, a roof defect rarely stays your problem alone: failed flashings and blocked valley gutters can send water into more than one home. Finding it early keeps the work smaller.
To find out what your survey will cost, ring 07833 053749 or email us and let us know about the roof. We will confirm the figure before booking.
Why book us in Winchmore Hill
- 98% of customers satisfied
- Drone and thermal imaging surveys available
- 5,000+ roofs surveyed
- An independent view of the roof
Read our cost guide or our case studies.
How it works
You do not need to do much on the day. Show us any stains, drips or problem areas you know about, and we will take it from there. The survey itself takes longer on a large roof than a small one, and the build-up of the roof makes a difference too. In Winchmore Hill, visits are available on weekdays and at weekends. It helps if you can point us to a visitor permit or a nearby bay. A back bedroom window can be the best vantage point for a rear addition, so we may ask to use one.
- You tell us about the roof and where water is showing.
- The roof is assessed for suitability first.
- The test method is chosen to suit the roof.
- We test the roof and locate any breaches.
- You get a report with photos of each breach.
Getting ready for the survey
- For a flat or shared roof, check access with whoever owns or manages the building
- Jot down any questions you want answered
- Keep pets in another room
How to book
Booking is simple: just ring 07833 053749 or drop us an email, let us know about the property and we’ll explain which survey suits. We confirm the price before anything is booked.
Related advice
Common questions in Winchmore Hill
Do you cover Winchmore Hill?
Yes. We work right across London and South East England, and Winchmore Hill is part of that. Just call 07833 053749 or drop us an email and let us know about the property.
Can parking be tricky for a visit in Winchmore Hill?
It rarely stops a survey, but it’s worth planning. Tell us what parking is available nearby, and the visit is planned around it.
Can you survey at the weekend?
We survey seven days a week: Monday to Friday, Saturdays and Sundays. Let us know which days suit you when booking.
Does someone need to be in?
Someone needs to let us in if we’re looking inside or in the loft. We will talk about access as you book.
How do I book a survey in Winchmore Hill?
The quickest way is to ring 07833 053749 or send us an email. Tell us the address and a little about the roof. Surveys run on weekdays, Saturdays and Sundays.
How long will testing take?
It depends on the size of the roof and its build-up. We will give you an idea when we quote.
Will you repair the leak?
No, the test finds the breaches and your roofer repairs them. The report gives your roofer the locations.
What we cannot see
To be straight with you, a roof survey has limits:
- Fixing the holes we find
- How wet the insulation is
- Build-ups without a suitable layer below
Not sure which survey suits your roof? You can ring 07833 053749 or send us an email and we will tell you. What our survey covers.
Roofs we survey in Winchmore Hill
- Commercial flat roofs
- Green roofs
- Flat roof membranes
- Liquid-applied waterproofing
- Single-ply roofs
- Roof terraces and balconies