Greater London · London and the South East
Electronic leak detection in Vale of Health, Greater London
A careful look at the flat roof membrane at your property in Vale of Health, with photographs and a written report.
- Leaks through a covered membrane
- Leaks through a flat roof with no obvious cause
- New membranes needing a check before handover
Can I check my roof myself?
If you have a loft with safe access, take a look inside. Take a torch and only step on boards or joists, and look for staining, damp timber or daylight coming through.
Look up at the roof after a storm, from the ground: 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.
Electronic leak detection for homes and businesses in Vale of Health
ELD can be carried out in more than one way. Low-voltage methods typically need a wet roof surface, while high-voltage testing needs a dry, exposed membrane. Which one suits depends on the membrane and the layers of the roof, and we will explain our choice. If neither method suits your roof, we’ll tell you before any testing starts. We survey flat roof membranes, single-ply roofs and roof terraces and balconies, and common reasons people get in touch are repairs that haven’t stopped the leak and new membranes needing a check before handover.
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 Vale of Health, the flat roof is often a shared part of the building.
Nothing in the report is left vague: where something needs attention, it says so plainly, along with how urgent it is.
- Where
- Vale of Health (NW3)
- Wider area
- Greater London
- Cost
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Survey days
- Weekdays, Saturdays and Sundays
- Insured
- PI and public liability insurance
- Phone
- 07833 053749
- Updated
- 27 October 2026
What we do, step by step
We don’t take risks to get a closer look. We inspect whatever is safely visible, and if part of the roof cannot be seen, the report says so. The survey normally takes as long as needed for the membrane area and the build-up, and we’ll give you a guide when quoting. From the street, a London terrace typically shows only its front slope or parapet, so a visit in Vale of Health moves between viewpoints: the pavement, upstairs windows, the loft and any safe spot at the back. If other people live in the building, tell us who can let us into the shared parts.
- We agree the area to be tested.
- We get the roof ready for testing.
- We work across the roof with the test equipment.
- We mark the breach locations in our records.
- The report is sent for your roofer to act on.
How to prepare
- Have any questions written down, so nothing gets missed
- Let us know about parking near the property
- Keep pets out of the way during the survey
Book a survey
Photos help, if you have them. Pictures from the ground or a window are fine; never climb up to get a better view. To get started, ring 07833 053749 or drop us an email.
Advice
Tips from our surveys
There’s plenty you can do without going near the roof. Here’s what helps most:
- Act on new leaks promptly
- Clear flat roof outlets regularly
- Avoid repeated repairs without finding the cause
- Ask contractors to protect the membrane
You receive a report showing where each breach was found, 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.
Nearby places to Vale of Health
Also in Vale of Health
Vale of Health: your questions answered
Do you carry out roof surveys in Vale of Health?
Yes, Vale of Health is within the area we cover. We survey roofs across London and the South East. Just ring 07833 053749 or drop us an email and tell us about the property.
Is my home in Vale of Health listed or in a conservation area?
Start with Historic England’s list for listing and your council for conservation areas. It is worth checking before planning roof work, as both can affect what’s allowed.
Do you climb onto every roof?
Only if it is safe. We inspect whatever is safely visible: from the ground, from windows, from inside the loft space, from the roof where it is safe and by drone where applicable. Anything we cannot see is noted in the report.
How much does electronic leak detection cost?
Each roof is quoted on its size and build-up. Tell us about the roof and where it leaks, and phone 07833 053749 or email us for a quote.
Will you fly a drone over my roof?
Yes, where it is applicable. Flights depend on the weather on the day and airspace rules, and we check for restrictions near airports before flying. We hold a CAA Flyer ID and Operator ID.
Is this a RICS survey?
No. We check the roof, not the whole building, so it’s not a RICS Level 2 or Level 3 survey. It can sit alongside a RICS survey if you want both.
What do I do with the report?
We email you the written report with photos and recommendations. You can use it to talk to a seller, an insurer, a roofer or a managing agent, whichever applies.
What happens if roof problems are left?
Some breaches are too small to see. ELD picks up breaches a visual check might miss where the roof suits it. London’s older roofs often have bitumen felt underlay or none at all, so once the slates or flashings let water past, little stops it reaching ceilings. Left unchecked, water soaks into timber and plaster and the damage spreads.
Bigger, taller and commercial roofs take more time to survey, so they’re priced to match. The price is confirmed before booking.
Why us?
- 98% of clients satisfied
- Professional indemnity and public liability insurance
- Photographs and a written report every time
- CAA-registered drone operator (Flyer ID and Operator ID)
See what a roof survey costs and our case studies.
Prices for electronic leak detection in Vale of Health
Not every roof costs the same to survey, and it comes down to:
- Features like valleys, chimneys, dormers and parapets
- The type of building, from a house to a block or an office
- Extra roofs, like extensions, dormers or garages
- If the survey needs thermal imaging or a drone
To find out what your survey will cost, ring 07833 053749 or use the contact form with the address and a few details. We will confirm the figure before booking.
What we need to know
Here’s what helps us most when you get in touch:
- Whether there’s a loft hatch, a shared roof or tricky access
- Any deadline, such as an exchange date
- The kind of building and roof involved
- Pictures from the garden or a window, if you have them
Every survey is priced before it is booked, so you know the cost up front. 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 email us.
Roof by roof
EPDM rubber roofs
ELD on EPDM depends on the product and the layers. We check before we quote.
Bituminous membranes
Older felt roofs often have seams and patches that can leak. Testing depends on the roof.
What electronic leak detection looks like in Vale of Health
Welsh slate on Victorian and Edwardian terraces is a familiar sight across inner London. From the street you may see only a parapet, with a butterfly roof and a valley gutter behind it draining to the back. In a house like that, shared stacks, party-wall upstands and lead flashings all need looking at as far as they can be seen. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere. About 0.1 miles west lies Heath House, a reminder of how long the area around Vale of Health has been built on. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead, and any change of roofing material on a listed home needs checking with the council first.
For site and facilities teams at buildings like Christ Church Primary School, a large flat roof with plenty of outlets and rooflights has many places where a membrane can fail. If you let a flat or house near Hampstead Heath station, a flat roof over a rented flat is easy to forget until the tenant reports a leak. Shop and office owners around O2 Centre may find that the flat roofs over shops and commercial units are worth checking before a leak, not after.
Vale of Health is about 1 mile north of Greenhill, in Greater London. From houses to flats and shops in Vale of Health, we can survey the roof on a weekday or at the weekend. We cover towns and villages across Greater London. There is also a page for London.
Surveys in NW3 are booked the same way as anywhere else. If you need electronic leak detection at a property on Well Road, Cannon Lane and Holford Road or a nearby road, we can help. You will find Vale of Health on the A502, so it’s easy for us to get to. Close by, we survey roofs in North End (1 mile north-west), Greenhill (1 mile south), Hampstead (1 mile south), West Hampstead (1 mile south-west) and Childs Hill (1 mile west). We also work in nearby towns such as London (6 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south), Kensington (4 miles south), St Pancras (4 miles south-east) and Shoreditch (5 miles south-east).
Landmarks near Vale of Health
Typical jobs here are in homes near St Vedasts School For Boys, South Hampstead High School and Hampstead Heath, among other places. For rail, the closest station is Hampstead Heath station, about 0.7 miles south-east. Other landmarks nearby include New End Hospital (under half a mile south) and Montfichet's Tower (4.7 miles south-east). Not far away are Parliament Hill and Turner's Wood.