Greater London · London and the South East
Electronic Leak Detection in East Finchley
Wondering about the flat roof membrane at a property in East Finchley? We carry out electronic leak detection in East Finchley and across Greater London, with plain-English findings.
- Leaks under green or ballasted roofs
- New roofs to check before paving or planting
- Punctures from foot traffic or tools
How the survey changes by roof type
Green and ballasted roofs
Green roofs and ballasted roofs cover the waterproofing. Some methods can work through these layers but it depends on the layers.
Bituminous membranes
ELD is often possible on bituminous membranes though the layers below matter.
About our electronic leak detection in East Finchley
ELD is a way of pinpointing breaches in a flat roof’s waterproofing membrane. It works with an electrical current which can only get through the membrane at a breach. That lets us locate holes that are too small to see so your roofer knows exactly where to repair. You get a photo-illustrated written report of each breach found. If you are worried about leaks through a covered membrane and damage from equipment installers, we can find out what’s behind it, on roof terraces and balconies, liquid-applied waterproofing and flat roof membranes 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 East Finchley, the flat roof is frequently a shared part of the building.
Every survey ends with a written report, with photographs, sent by email. It sets out the condition of the flat roof membrane, any defects and our written recommendations.
- Place
- East Finchley (N2, N3, NW11)
- Region
- Greater London
- Cost
- Quoted for your roof
- Your report
- A written report with photos, by email
- Appointments
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Page updated
- 27 October 2026
Towns and villages near East Finchley
Also in East Finchley
When you need someone else
No survey can tell you everything, and it is better to know them up front. Bear these in mind:
- Fixing the holes we find
- Leaks from walls, copings or rooflights
- Moisture spread under the membrane
Not sure which survey suits your roof? You can call 07833 053749 or use the contact form and we’ll tell you. The full list of what we check.
Roofs we survey in East Finchley
- Liquid-applied waterproofing
- Green roofs
- Flat roof membranes
- Single-ply roofs
- Commercial flat roofs
- Roof terraces and balconies
For landlords and managing agents
Landlords, agents and building managers in East Finchley and across Greater London can book any of our surveys. For a price for a let property or a block, call 07833 053749 or email us.
For a freeholder or residents’ company, a roof report is a sound basis for a maintenance plan.
Questions from East Finchley
Will parking be an issue for a roof survey in East Finchley?
Sometimes, yes. If East Finchley has controlled parking where you are, a visitor permit is the easiest answer.
Does a conservation area affect roof work in East Finchley?
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.
Do I need to be at home?
It depends on what we need to see. For inside areas and the loft space, someone has to give us access.
Is this an asbestos survey?
No. We can flag materials that might contain asbestos, but only a specialist asbestos surveyor can confirm it. It may be present in buildings built or refurbished before 2000.
Do you take photos of the roof?
Yes. Photographs are taken throughout the survey, and they go into the written report.
What do I do with the report?
You receive the written report by email, with photos and recommendations. You can use it to talk to a seller, an insurer, a roofer or a managing agent, whichever applies.
How much time does ELD need?
Testing typically takes a length of time set by the roof’s area and construction, which we set out in the quote.
Checking the roof from ground level
Watch the gutters in a downpour, from a window or the ground. Water spilling over the edge can be a sign of a blockage or a gutter that has dropped.
Your own check is a good start, but it is not a survey. From ground level, valleys, flashings and the backs of chimneys are frequently out of sight, and those are details a survey looks at closely.
What happens on the day
On the day, we start by asking what you’ve noticed and what you need to know. After that, we look at everything we can see safely. The survey usually takes a time that depends on the membrane area and the build-up, and we’ll give you a guide when quoting. Many London properties are flats or terraces with no side access, so the back of the roof is frequently seen from upstairs windows, from inside or, where a flight is allowed, from the air. If the building has a managing agent or access rules, tell us when you book.
- 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.
- The membrane is tested and breaches are found.
- You get a report with photos of each breach.
Before the survey
- If it isn’t your property yet, arrange access through the agent
- For a flat or shared roof, check access with whoever owns or manages the building
- Make a note of anything you’d like us to look at
Getting a price
For a price for electronic leak detection in East Finchley, call 07833 053749 or email us. The address, the type of property and what you’d like to know help us give you an accurate price.
Read more
Why act early in East Finchley
ELD before paving, ballast or planting goes on is simpler. Once layers are added, finding a breach is harder. 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 frequently older than it looks.
Bigger, taller and commercial roofs take more time to survey, so they’re priced to match. You’ll know the figure before booking.
Why us?
- 20+ years’ experience
- Weekday and weekend surveys
- Insured for professional indemnity and public liability
- Independent findings on the roof’s condition
Electronic leak detection in East Finchley: local notes
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. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. About 1.1 miles south lies Heath Hall, a reminder of how long the area around East Finchley has been built on. Older roofs in the wider area can hide decades of patch repairs, so the detail matters.
The streets around a church such as Church of the Holy Trinity are frequently among the oldest in a place, and if your home is one of the older ones nearby, flat-roofed rear additions and dormers added over the years are worth checking. Anyone responsible for a site like Holy Trinity CofE Primary School will know that a large flat roof with lots of outlets and rooflights has many places where a membrane can fail. Controlled parking zones are common in London, so mention any permit rules for East Finchley.
East Finchley is about 5 miles north of Marylebone, in Greater London. From houses to flats and shops in East Finchley, we can survey the roof. Our Greater London coverage includes East Finchley. Our London page covers surveys nearby.
Postcode districts we cover here for electronic leak detection: N2, N3 and NW11. Whether your property is on Oak Lane, Maya Road and High Road or a nearby road, we can survey it. With the A1 close by, East Finchley is simple for us to get to. Other places close to East Finchley include Hampstead Garden Suburb (1 mile south-west), Fortis Green (1 mile east), Temple Fortune (1 mile south-west), Muswell Hill (1 mile east) and Golders Green (2 miles south-west). Within a short drive, we also cover London (7 miles south-east), City of Westminster (5 miles south), Marylebone (5 miles south), Kensington (6 miles south), St Pancras (5 miles south-east) and Shoreditch (6 miles south-east).
Around East Finchley
In East Finchley, that means homes and buildings near Tollington School, Francis Skaryna Belarusian Library and Museum and Bishop Douglass School Finchley and the streets around them. Nearby too are Lyttelton Playing Fields (0.5 miles south) and The Bald Faced Stag pub (0.5 miles east). For rail, the closest station is New Southgate station, roughly 2.2 miles north-east of the centre. A little further out are Grand Arcade (1.6 miles north) and Jewish Museum - Finchley (0.7 miles north-west). Green spaces nearby include Highgate Hill and Long Lane Pasture.