Greater London · London and the South East
Electronic Leak Detection in Highgate
Electronic leak detection to pinpoint holes in flat roof membranes across Highgate, with drones and thermal imaging where they help. Call or email for a price.
- Failed seams and laps
- Punctures from foot traffic or tools
- Patched roofs that still leak
What we cannot see
We only report what can be seen safely on the day, so some things are outside what a survey can do:
- Some conductive membranes
- Parts of the roof covered by fixed equipment
- Moisture spread under the membrane
If you are not sure which survey you need, ring 07833 053749 or send us an email and we’ll give you a straight answer before you book. The full list of what we check.
What we look at
- Flat roof membranes
- Roof terraces and balconies
- Green roofs
- Single-ply roofs
- Commercial flat roofs
- Liquid-applied waterproofing
Electronic leak detection for homes and businesses in Highgate
Our ELD report shows where each breach was found with photos. Your roofer can then repair those points instead of hunting for the leak. We don’t estimate repair costs; that is 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. If you’re worried about leaks that return after repairs and breaches hidden under paving or planting, we can find out what’s behind it, on flat roof membranes, green roofs and commercial flat roofs alike.
On a London roof terrace or a flat roof over a back addition, water often runs under the covering before it shows. Outlets, upstands against parapet walls and joins with the main roof are frequent culprits. In a block or conversion in Highgate, the flat roof is often a shared part of the building.
What you get is a clear record of the flat roof membrane on the day we saw it. That makes it useful now and a handy reference later, for example when you want to check whether anything has changed.
- Location
- Highgate (N6, N19, NW5)
- Region
- Greater London
- Cost
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- When we survey
- Weekdays and weekends
- Insured
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Different roofs, different checks
Single-ply membranes
ELD often works on single-ply membranes but it depends on the product and layers.
Inverted and paved roofs
If the build-up rules out ELD, we will say so.
Electronic leak detection in Highgate: local notes
Witanhurst, about 0.4 miles south-west, is one of the historic houses in the wider area around Highgate. If you own one of the older houses, expect a mix of original materials and later repairs on the roof, and the council can say whether a home is in a conservation area. Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. Many have butterfly roofs draining to a central valley gutter, with parapet walls and gutters hidden behind them. Lead flashings, party-wall upstands and shared chimney stacks are typical of these houses, if yours is one of them. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
If you look after a shop, office or commercial unit, for instance near The Mall Wood Green, outlets and upstands on commercial flat roofs are the places to check before trouble starts. For site and facilities teams at buildings such as St Michael's Church of England Primary School, ponding and blocked outlets on a wide flat roof are worth catching before the next wet season.
Highgate is about 2 miles north-east of Hampstead, in Greater London. Highgate is one of many places we visit across Greater London, for houses, flats and commercial buildings. Across Greater London, we cover Highgate and the places around it.
Here we cover the N6, N19 and NW5 postcode area for electronic leak detection. Whether your property is on Wood Lane, Grange Road and Talbot Road or a nearby road, we can survey it. Neighbouring places we cover for electronic leak detection include Upper Holloway (1 mile south-east), Dartmouth Park (1 mile south), Lissenden Gardens (1 mile south), Crouch End (1 mile north-east) and Tufnell Park (1 mile south-east). Within a short drive, we also cover London (5 miles south-east), City of Westminster (4 miles south), Marylebone (4 miles south), Kensington (6 miles south-west), St Pancras (3 miles south) and Shoreditch (4 miles south-east).
Around Highgate
Locally, jobs take us to homes and businesses close to The Angel Inn, St Aloysius RC College and Whittington Park. The closest station to Highgate is Upper Holloway station, about 0.9 miles south-east. A little further out are Highgate Private Hospital (0.6 miles north-west) and Montfichet's Tower (4.4 miles south-east). For a walk, there is Darland's Lake and Parkland Walk.
What we’re asked to look at in Highgate
Other trades on the roof can puncture the waterproofing. Fixings, equipment and foot traffic can leave small holes.
A survey can pick up problems such as:
- Damage from equipment installers
- Breaches around outlets and penetrations
- Leaks through a covered membrane
- New membranes needing a check before handover
Highgate is in London, so parking needs planning: a visitor permit or a nearby bay makes the day easier, as a space near the door cannot be promised.
Before you book any roof surveyor
- How they’ll see the roof: from the ground, the loft, the roof or by drone
- What the report includes, and whether it has photos
- Whether any drone flown is registered with the CAA
- What they will not be able to tell you
How we price electronic leak detection
Prices always include VAT. What changes the price is:
- How big the roof is
- Extra roofs, like extensions, dormers or garages
- Whether it’s a home or a commercial building
- Building height and the viewpoints available
All our prices include VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. We confirm the exact price before booking.
Helping us price your survey
We will usually ask about:
- Pictures of the roof from a safe spot, if you have them
- The reason for the survey, such as buying, a leak or storm damage
- Any marks or damp showing indoors
- The kind of building and roof involved
For a price for electronic leak detection in Highgate, phone 07833 053749 or send us an email. The address, the type of property and what you’d like to know help us price the survey accurately.
For landlords and managing agents
Where a roof is shared: we need access agreed with the freeholder or managing agent. Mention it when you contact us and we’ll plan the survey around it.
Managing agents and residents’ management companies use roof surveys to plan maintenance. Recommendations are set out in order of urgency where relevant, which helps when budgeting.
The survey, step by step
The visit typically starts outside and finishes in the loft: outside views come first, then the roof space if there’s safe access. In total, it takes more time on a big roof than a small one, with the construction of the roof playing a part too. Surveys in Highgate can be booked for any day of the week. It helps if you can point us to a visitor permit or a nearby bay, and to clear a path to the loft hatch. A back bedroom window can be the best vantage point for a rear addition, so we may ask to use one.
- 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.
- We test the roof and locate any breaches.
- A report with photographs shows where each breach is.
Before the survey
- Let us know about any leaks, stains or damp patches you know of
- Mention any parking restrictions on your street
- Keep pets out of the way during the survey
Booking a survey
We confirm the price for your survey before you book, so you know where you stand. We quote electronic leak detection for each roof, as the method and time depend on the roof. For a price for your roof, ring 07833 053749 or use the contact form.
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Highgate questions
How do I find out if my home in Highgate is listed?
The council and Historic England’s list are the places to check. It is worth checking before planning roof work, as both can affect what’s allowed.
Can parking be tricky for a visit in Highgate?
It depends on the street. If Highgate has controlled parking where you are, a visitor permit is the easiest answer, and a driveway is even better.
Can you survey in bad weather?
A survey can typically go ahead in light rain, and it can even help show where water is getting in. Heavy rain or strong wind can ground a drone and make the roof unsafe, so we’ll agree a new date if the weather is not suitable.
What do I do with the report?
You receive the written report by email, with photos and recommendations. It’s yours to share with a seller, insurer, roofer or managing agent, whichever applies.
Are you structural engineers?
No. Our survey is not a structural engineer’s report, and it does not include calculations. If we see signs that need an engineer’s opinion, we will recommend one.
How long does electronic leak detection take?
It typically takes longer on a large roof than a small one, with the construction of the roof playing a part too.
Do I have to be there for the survey?
Not always. An outside-only look can be arranged beforehand, but anything inside needs someone there to give access.