Greater London · London and the South East
Electronic leak detection in North End, Greater London
Electronic leak detection to pinpoint holes in flat roof membranes in North End, carried out by an experienced roof surveyor. Every survey comes with a written report and photos.
- A flat roof leak that cannot be traced
- Leaks through a covered membrane
- Breaches around outlets and penetrations
How electronic leak detection works in North End
Our ELD testing covers flat roofs in North End and the rest of London and South East England. Testing typically takes longer on a large roof than a small one, with the construction of the roof playing a part too. Every roof is quoted on its size and build-up. You get a report with photos. We survey liquid-applied waterproofing, commercial flat roofs and single-ply roofs, and the problems we are asked to look at most are breaches hidden under paving or planting and damage from equipment installers.
Commercial and residential blocks across London often have big flat roofs with plant, rooflights and access walkways. Each pipe, upstand and fixing through the covering is a possible weak point. For a building in North End, access is agreed with whoever manages the roof ahead of the visit. Plant bases, rooflights and cable entries are all places where water can get in.
After the visit, you get a written report with photographs, emailed to you. It explains the condition of the flat roof membrane, the defects we found and what we recommend.
- Location
- North End (NW3, NW11, N2)
- Region
- Greater London
- Cost
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Cover
- PI and public liability insurance
- Call
- 07833 053749
- Page updated
- 27 October 2026
What happens on the day
The visit typically starts outside and finishes in the loft: first the slopes, edges and gutters from every safe viewpoint, then the loft space where it can be reached. All told, expect more time on a big roof than a small one, with the construction of the roof playing a part too. In North End, 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.
- We start with what you know about the roof and the leak.
- 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.
- You get a report with photos of each breach.
Before the survey
- Check we can get to the back of the property
- Keep pets out of the way during the survey
- Buyers: confirm access with the estate agent or seller
Getting a price
For a price for electronic leak detection in North End, call 07833 053749 or drop us an email. The address, the type of property and what you want to find out help us price the survey accurately.
Read more
When to book a survey in North End
When the membrane is buried, holes can’t be seen at all. ELD can work on some covered roofs, depending on the build-up.
Look out for signs like these:
- Holes left by work on the roof
- A flat roof leak that can’t be traced
- Leaks under green or ballasted roofs
- Stains far from any visible defect
Take a building like The King Alfred School: a large flat roof with lots of outlets and rooflights has many places where a membrane can fail.
Choosing a roof surveyor
- What they won’t be able to tell you
- What insurance they carry
- Which viewpoints they use to see the roof
- Whether the inside of the roof is included
Honest limits
Without opening up the roof, some things stay hidden, and that sets some limits:
- Areas we cannot reach or that can’t be tested
- Repairing the breaches (that’s for your roofer)
- Build-ups without a suitable layer below
If you are not sure which survey you need, call 07833 053749 or email us and we will give you a straight answer before booking. What our survey covers.
What this survey covers
- Liquid-applied waterproofing
- Single-ply roofs
- Roof terraces and balconies
- Flat roof membranes
- Green roofs
- Commercial flat roofs
Flat roofs in North End
With Heath House about 0.3 miles south, North End sits in an area with a long building history. If your house is among the older ones, expect a mix of original materials and later repairs on the roof, and a listed home or one in a conservation area may need consent for changes of material. Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. From the street you may see only a parapet, with a butterfly roof and a valley gutter behind it draining to the back. If your home in North End is one of them, lead flashings, party-wall upstands and shared chimney stacks are part of the picture too. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises.
If you run a business near O2 Centre, flat roofs over shops and units are easy to forget until water comes through a ceiling. For landlords with property near Hampstead Heath station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
North End is about 1 mile north of Greenhill, in Greater London. North End is one of many places we visit across Greater London, for houses, flats and commercial buildings. Our Greater London coverage includes North End. There is also a page for London.
Here we cover the NW3, NW11 and N2 postcode area for electronic leak detection. If you need electronic leak detection at a property on Sandy Road, Park Avenue and Platt's Lane or anywhere close by, we can help. Main roads around North End include the A502. Close by, we survey roofs in Vale of Health (1 mile south-east), Childs Hill (1 mile south-west), Golders Green (1 mile north-west), Greenhill (1 mile south) and West Hampstead (1 mile south). We also work in nearby towns like London (6 miles south-east), City of Westminster (4 miles south), Marylebone (4 miles south-east), Kensington (5 miles south), St Pancras (4 miles south-east) and Shoreditch (5 miles south-east).
Around North End
Typical jobs here are in homes near The Old Bull and Bush pub, Childs Hill Park and The Henrietta Barnett School and the streets around them. For rail, the closest station is Hampstead Heath station, about 1.1 miles south-east. A little further out are O2 Centre (1.4 miles south) and New End Hospital (0.7 miles south). Green spaces nearby include Turner's Wood and Darland's Lake.
Checking the roof from the ground
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. Do not go up yourself.
What you can’t do safely is get up close. Slates, tiles, flat roofs and rooflights can give way. That part is for a survey.
Your questions about electronic leak detection in North End
Does a conservation area affect roof work in North End?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Do you carry out roof surveys in North End?
Yes, North End is one of the places we work. Every survey there gets the same written report with photographs.
Can you test a green or ballasted roof?
Sometimes. It depends on the build-up and the layers above the membrane and parts may need to be lifted. We talk this through first.
Which method do you use?
The roof decides the method. We’ll explain why when we quote.
Can every flat roof be tested?
Not every roof is suitable. Certain membranes are conductive, and some build-ups lack a suitable layer below. We will tell you if yours is not suitable before testing.
What’s in the survey report?
It sets out what we found, why it matters and what we recommend, backed by photographs. It also says if any part of the roof couldn’t be seen safely, so you know exactly what was covered.
Will you check the loft?
If it is needed and safe to reach, yes. We look for staining, damp, daylight and signs of movement, as far as the space allows.
What a survey costs
A few things affect what a survey costs:
- House, block, shop or office
- The height of the building and how the roof can be seen safely
- The use of thermal imaging or a drone
- The shape of the roof and its details
What a survey costs comes down to the roof itself: how big it is, how high it is, the number of separate roofs and how it can be reached and seen safely. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Helping us price your survey
The more you let us know, the easier it is to price the survey. When you contact us, tell us:
- What made you get in touch
- Any photos you have, taken from ground level or a window
- Access details, like a loft hatch or a shared roof
- Where any leaks, stains or damp patches show inside
Every survey is priced before it’s booked, so you know where you stand. Electronic leak detection is quoted for your roof, because the method depends on the roof. To book, call 07833 053749 or use the contact form.
Towns and villages near North End
Also in North End
For landlords and managing agents
With a portfolio of properties, you can book surveys for several addresses. To arrange surveys for several addresses, phone 07833 053749 or email us.
Shared roofs need a little more planning: we need access agreed with the freeholder or managing agent. Mention it when you contact us and we will plan the visit with that in mind.