Greater London · London and the South East
Fortune Green Electronic Leak Detection
Electronic leak detection across Fortune Green, backed by more than 20 years’ experience. You get a clear report with photographs.
- Punctures from foot traffic or tools
- Damp inside with no sign on the roof
- Leaking laps in the waterproofing
Practical tips
Small things make a difference. Some pointers:
- Act on new leaks promptly
- Do not let outlets block
- Check new waterproofing before handover
- Note where leaks show inside and when
The report records each breach location with photos. Pass it to your roofer to repair the breach points.
Limit foot traffic on flat roofs. Feet and dropped tools are a common cause of holes.
About our electronic leak detection in Fortune Green
Electronic leak detection, or ELD, finds holes in flat roof waterproofing membranes. It uses a small electrical current that passes through the membrane only where there is a breach. It can find holes too small to spot by eye so your roofer knows exactly where to repair. The results come in a report with photos. We’re frequently asked to look into leaks through a covered membrane and damp inside with no sign on the roof, on commercial flat roofs, flat roof membranes and green roofs.
Across London, flat roofs are everywhere, from back additions and dormers to roof terraces, blocks of flats and offices. They’re covered in felt, asphalt, EPDM rubber, GRP fibreglass or single-ply membranes, each with its own weak points. In Fortune Green, as anywhere in London, the right approach depends on what the roof is made of. Older flat roofs are often felt or asphalt, newer ones rubber or GRP.
You can share the report with anyone who needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent, whichever applies.
- Where
- Fortune Green (NW3, NW6, NW2)
- Wider area
- Greater London
- Price
- Quoted for your roof
- Reports
- A written report with photos, by email
- Survey days
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Signs you need electronic leak detection in Fortune Green
On a flat roof, water spreads under the waterproofing. The stain inside can be far from the hole, so tracing it by eye is difficult.
Here are some of the things we see often:
- Leaks through a flat roof with no obvious cause
- Leaking laps in the waterproofing
- Damage from equipment installers
- Damp inside with no sign on the roof
If you run a hotel or guest house in or near Fortune Green, a roof problem can mean rooms out of use, so it pays to find faults before guests do.
Before you book any roof surveyor
- Whether the price includes VAT
- Whether the loft space is looked at, where there is one
- What follow-up you get after the report
- How they plan to inspect the roof safely
Fortune Green: your questions answered
Do you cover commercial flat roofs around Fortune Green?
Yes, commercial buildings, hotels included, are part of the work. Roof access is agreed with the building manager or owner beforehand.
Will parking be an issue for a roof survey in Fortune Green?
Sometimes, yes. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
What do I do with the report?
We email you the written report with photographs and recommendations. It’s yours to share with a seller, insurer, roofer or managing agent, whichever applies.
Will you walk on the roof?
Only where it is safe to do so. We check everything that can safely be seen: from the ground, from windows, from inside the roof space, from the roof where it is safe and by drone where it applies. Anything we can’t see is noted in the report.
Is this an asbestos survey?
No. Our report may flag materials that could contain asbestos, but only a specialist asbestos surveyor can confirm it. It may be present in buildings built or refurbished before 2000.
What will the report tell me?
It sets out what we found, why it matters and what we recommend, backed by photographs. Anything we couldn’t see safely is noted too, so you know exactly what was covered.
How long have you been surveying roofs?
Over 5,000 surveys so far, over more than 20 years, and 98% of customers are satisfied.
The survey, step by step
We work from the outside in: first the slopes, edges and gutters from every safe viewpoint, then the roof space where it can be reached. All told, expect longer on a large roof than a small one, and the build-up of the roof makes a difference too. For a visit in Fortune Green, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor the property is on and how to get into the loft. We then look at what can safely be seen from the ground, windows, the loft and, where it’s safe, the roof itself.
- 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.
- Testing runs across the roof to locate breaches in the membrane.
- You get a report showing where each breach is, for your roofer to repair.
Preparing for the visit
- Point out any leaks or damp patches
- For flats, check roof access has been agreed
- Dig out any old roof reports or invoices
How to book
Every survey is priced before it is 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, call 07833 053749 or drop us an email.
Read more
What affects the cost of electronic leak detection
What a survey costs depends on the time and equipment it needs. That comes down to:
- Features like valleys, chimneys, dormers and parapets
- The height of the building and how the roof can safely be seen
- If the survey needs thermal imaging or a drone
- Extra roofs, like extensions, dormers or garages
For a price for your roof in Fortune Green, call 07833 053749 or email us and let us know about the roof. The price is agreed before a date is set.
Helping us price your survey
Some details help us recommend the right survey and price. When you get in touch, it helps to mention:
- Photos of the roof, taken safely from ground level or a window
- Your timetable, such as an exchange date
- The reason for the survey, such as buying, a leak or storm damage
- The property’s address and postcode
Getting a price is simple: just call 07833 053749 or drop us an email, let us know about the property and we’ll explain which survey suits. The price is agreed up front.
Flat and commercial roofs around Fortune Green
Fenton House, about 0.7 miles east, is one of the historic houses in the wider area around Fortune Green. Older homes in the wider area often have features worth a closer look, such as lead valleys, tall stacks and roofs that have been patched over the years, and a listed home or one in a conservation area may need consent for changes of material. There are several hotels within about a mile and a half of Fortune Green, and hotels, like offices and blocks of flats, often have flat roofs. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use.
If you own one of the older houses in the streets near Church of St Luke, the flat roofs on later extensions tend to wear out long before the main roof. If you let a flat or house near West Hampstead Thameslink station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Fortune Green is about 1 mile west of Hampstead, in Greater London. In Fortune Green, as across Greater London, every roof gets the same careful survey. Fortune Green is one of the places in Greater London where we work for electronic leak detection. London is in our area too.
Postcode districts we cover here for electronic leak detection: NW3, NW6 and NW2. Local streets include Mill Lane, Ajax Road and Sarre Road, and we cover them all. Other places close to Fortune Green include West Hampstead (1 mile east), Childs Hill (1 mile north), Hampstead (1 mile east), Greenhill (1 mile east) and Vale of Health (1 mile north-east). Further out, we also cover London (6 miles south-east), City of Westminster (3 miles south-east), Marylebone (3 miles south-east), Kensington (4 miles south), St Pancras (4 miles south-east) and Shoreditch (5 miles east).
Around Fortune Green
Locally, jobs take us to homes and businesses close to Holly Bush pub, St Vedasts School For Boys and Kilburn Grange Park and the streets around them. The closest station to Fortune Green is West Hampstead Thameslink station, about 0.5 miles south of the centre. A little further out are Montfichet's Tower (4.9 miles south-east) and O2 Centre (0.8 miles south-east). Open spaces near Fortune Green include The Long Water and Westbere Copse.
Landlords, agents and block managers in Fortune Green
For a freeholder or residents’ company, a roof report is a sound basis for a maintenance plan, with the most urgent items set out first.
Businesses and commercial landlords can book us too, from shops and offices to industrial units. Larger roofs take longer, so they’re priced to suit.
Towns and villages near Fortune Green
What else we do in Fortune Green
Checking the roof from ground level
After heavy rain, check ceilings and the tops of walls for new stains. Photograph them and note the date, which helps when we check the roof.
After strong wind, take a look from the pavement or garden: 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.