Greater London · London and the South East
Upper Norwood Electronic Leak Detection
Electronic leak detection in Upper Norwood and the rest of Greater London. Surveys run on any day of the week.
- Holes left by work on the roof
- New membranes needing a check before handover
- Leaks that return after repairs
Electronic leak detection in Upper Norwood: what you get
ELD suits many waterproofing membranes on flat roofs, on homes, blocks and commercial buildings. It helps trace a leak you already have or check a new membrane before handover. Each roof is quoted on its size and build-up. We can test on weekdays and at weekends when conditions allow. Tell us about your roof to find out more. If you’ve noticed breaches around outlets and penetrations and a flat roof leak that can’t be traced, a survey will tell you what’s going on.
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 Upper Norwood, as anywhere in London, the right approach depends on what the roof is made of. Older flat roofs are frequently felt or asphalt, newer ones rubber or GRP.
Findings are set out part by part, from the coverings down to the gutters, with a note and a photo for each point. You’ll see the good as well as the bad.
- Where
- Upper Norwood (SE19, SE27, SE21)
- Region
- Greater London
- Price
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Survey days
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Phone
- 07833 053749
- Updated
- 27 October 2026
Electronic leak detection around Upper Norwood
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. If your home in Upper Norwood is one of them, lead flashings, party-wall upstands and shared chimney stacks are part of the picture too. Next to the main roofs there’s typically a flat roof somewhere, whether on an extension, a garage or a commercial unit. With Kingswood House about 0.8 miles north, Upper Norwood sits in an area with a long building history. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead, and the council can say whether a home is in a conservation area.
Controlled parking zones are common in London, so mention any permit rules for Upper Norwood. Landlords with a home close to Gipsy Hill station may find that a flat roof over a rented flat is easy to forget until the tenant reports a leak.
Upper Norwood is about 4 miles south-east of Stockwell, in Greater London. Houses, flats, blocks and commercial buildings in Upper Norwood can all book electronic leak detection, with a written report and photographs every time. Our Greater London coverage includes Upper Norwood. For surveys nearby, see our London page.
All of SE19, SE27 and SE21 is within our area for electronic leak detection. Local streets include Dover Road, Hawke Road and Tudor Road. Upper Norwood sits on or near the A214. If you’re just outside Upper Norwood, we cover Norwood New Town (1 mile west), Gipsy Hill (1 mile north-east), West Norwood (1 mile north-west), Crystal Palace (1 mile east) and Anerley (1 mile east). We also work in nearby towns like London (6 miles north), City of Westminster (7 miles north-west), Marylebone (7 miles north), Kensington (7 miles north-west), St Pancras (7 miles north) and Shoreditch (7 miles north).
Local landmarks in Upper Norwood
In Upper Norwood, that means homes and buildings near The Sparrowhawk pub, Long Meadow and Rockmount Primary School, among other places. There is a railway station in Upper Norwood itself: Gipsy Hill station. Well-known places in the area include St Christopher's Hospice (1.3 miles east) and Crystal Palace Museum (0.5 miles east). For a walk, there’s Dulwich Upper Wood and Knight's Hill.
Landlord and commercial surveys in Upper Norwood
If you own several properties, you can book surveys for several addresses. To arrange surveys for several addresses, ring 07833 053749 or email us with the addresses.
Where a roof is shared: we need access agreed with the freeholder or managing agent. Tell us about it when you book and we’ll plan the survey around it.
Useful tips for Upper Norwood property owners
A little preparation and a few simple habits help. Some pointers:
- Use boards when working on the roof
- Clear flat roof outlets regularly
- Tell us about the membrane and build-up if you know it
- Note where leaks show inside and when
Questions about the results are welcome. We will explain what was found and what it means.
Do not leave a flat roof leak running. The longer water gets in, the more insulation and decking can be affected.
Places near Upper Norwood
Also in Upper Norwood
DIY checks: what’s safe
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.
A lot can be seen from the ground. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Never climb onto the roof to look.
Your questions about electronic leak detection in Upper Norwood
Is parking a problem for a survey in Upper Norwood?
Usually it is manageable with a little notice. Let us know the parking rules on your street and we’ll work around them.
Is my home in Upper Norwood listed or in a conservation area?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. It matters most if you are planning to re-roof in a different material.
What if it rains on the day?
Some surveys depend on the weather more than others. Drones cannot fly safely in high wind or heavy rain, and thermal imaging works best after a sunny day, with a dry roof and little wind. If the conditions are not right, we will talk to you about another date.
Do you need to get into the loft?
Yes, where the survey calls for it and there is safe access. Inside, we look for damp, staining, gaps and sagging.
Does electronic leak detection work on all membranes?
That depends on the roof’s membrane and layers. Let us know what you know about the roof and we’ll confirm suitability.
How long does electronic leak detection take?
The roof’s size and build-up decide how long it takes. You’ll know roughly how long before we start.
How do I book a survey in Upper Norwood?
To arrange a survey, phone 07833 053749 or use the contact form and let us know the address and what you want to find out. We’ll confirm the price and find a day that suits.
Do you need electronic leak detection in Upper Norwood?
A breach can be left during installation. Testing before the roof is covered or handed over helps find them.
Common reasons to book include:
- Damp inside with no sign on the roof
- Holes left by work on the roof
- Breaches around outlets and penetrations
- Gaps at membrane joints
If you live in an older home near Christ Church, flat-roofed rear additions and dormers added over the years are worth checking.
What to check before booking
- Do they have a CAA Flyer ID and Operator ID for drone work?
- How long the report takes to arrive
- What the survey won’t cover
- Will they check the loft as well as the outside?
What we do, step by step
The aim of the visit is simple: to look at the flat roof membrane as closely as is safe and record what we find. Notes and photographs go into the written report. The visit usually takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. In a London area like Upper Norwood, the main things to sort out are parking and access: 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 whatever is safely visible from the ground, windows, the loft and, where it is safe, the roof itself.
- We start by finding out what the roof is made of and where it leaks.
- We check that the membrane and build-up suit electronic leak detection.
- The testing method is chosen to suit the membrane and build-up.
- We test the membrane and find where current is passing through it.
- We send a report with photos of each breach so your roofer can repair it.
How to prepare
- Have any paperwork from past roof work to hand
- Make sure we can get to the back of the property
- Let us know about parking near the property
Booking a survey
Every survey is priced before it’s 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.
Advice
What happens if roof problems are left?
Not every leak is in the membrane. Testing shows whether the membrane is breached so attention can go to the right place. Work on a London roof is rarely simple to arrange, with parking, neighbours and access all to think about. That’s a good reason to find problems early, while there’s time to plan, rather than in a rush after a leak.
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 safely it can be seen. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Why book us in Upper Norwood
- Over 5,000 surveys carried out
- Drones and thermal imaging where it applies
- Drone flown under a CAA Flyer ID and Operator ID
- Weekday and weekend surveys
See how roof surveys are priced or what we found on two real jobs.