Greater London · London and the South East
Electronic leak detection in Dulwich Village, Greater London
Electronic leak detection in Dulwich Village, backed by more than 20 years’ experience. Every survey ends with a written report and photographs.
- A flat roof leak that cannot be traced
- Damp inside with no sign on the roof
- Leaks under green or ballasted roofs
How electronic leak detection works in Dulwich Village
Electronic leak detection, or ELD, finds holes in flat roof waterproofing membranes. It uses a small 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 can repair them. You get a photo-illustrated written report of each breach found. If you are worried about leaks showing away from the breach and new membranes needing a check before handover, we can find out what’s behind it, whatever the roof.
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 Dulwich Village, the flat roof is frequently a shared part of the building.
The report is yours to share with whoever needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent.
- Place
- Dulwich Village (SE22, SE21, SE24)
- Region
- Greater London
- Prices
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- Survey days
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Call
- 07833 053749
- Updated
- 27 October 2026
Before and after the survey
A few practical points come up again and again on our surveys. They apply to most roofs:
- Test new membranes before covering them
- Ask contractors to protect the membrane
- Keep outlets clear of debris
- Share any drawings of the roof
Questions about the results are welcome. We’ll explain what was found and what it means.
Ask trades working on the roof to protect the membrane when fitting equipment. Have the roof looked at after other work.
Towns and villages near Dulwich Village
Other services in Dulwich Village
Signs you need electronic leak detection in Dulwich Village
Joints and laps in a membrane can fail over time. A gap that’s hard to see can let water in long before anyone notices.
Look out for signs like these:
- A flat roof leak that can’t be traced
- Leaks under green or ballasted roofs
- Damage from equipment installers
- Leaks showing away from the breach
Landlords with a home close to North Dulwich station may find that flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Choosing a roof surveyor
- Whether you get a written report with photos
- Their drone registration, if they fly one
- How they’ll see the roof: from the ground, the loft, the roof or by drone
- Whether the inside of the roof is included
What we do, step by step
Every visit follows the same pattern: we listen to what’s been worrying you, look at the roof from every safe viewpoint, take photographs as we go and record our findings for the written report. Most visits take longer on a large roof than a small one, and the build-up of the roof makes a difference too. In Dulwich Village, as in much of London, plenty of properties are flats or terraces without side access, so rear slopes are viewed from windows, the loft or, where a flight is allowed, by drone. If the building has a managing agent or access rules, tell us when booking.
- We agree the area to be tested.
- The surface is prepared for the chosen method.
- Testing runs across the agreed area.
- We mark the breach locations in our records.
- You receive the results to pass to your roofer.
How to prepare
- Keep pets inside or away from the areas we are looking at
- If you’re buying, check with the agent that we can get in
- Have any questions written down, so nothing gets missed
Booking a survey
Most bookings start with a short call: phone 07833 053749 or send us an email. You’ll have a price before anything is arranged.
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Electronic leak detection around Dulwich Village
The wider area around Dulwich Village has a long history of building, with Kingswood House about 1.3 miles south. If you own one of the older houses, expect a mix of original materials and later repairs on the roof, and any change of roofing material on a listed home needs checking with the council first. Inner London’s Victorian and Edwardian terraces often have Welsh slate roofs. From the street you may see only a parapet, with a butterfly roof and a valley gutter behind it draining to the back. Lead flashings, party-wall upstands and shared chimney stacks are typical of these houses, if yours is one of them. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises.
Shop and office owners around Lewisham Shopping Centre may find that outlets and upstands on commercial flat roofs are the places to check before trouble starts. If your home is one of the older ones in the streets near St Barnabas' Church, later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear.
Dulwich Village is about 1 mile south-east of Herne Hill, in Greater London. We cover Dulwich Village and the rest of Greater London, as part of our work across London and South East England. Our area takes in places right across Greater London.
Postcode districts we cover here for electronic leak detection: SE22, SE21 and SE24. You’ll find streets like Court Lane, Druce Road and Turney Road, all of which we cover. Being close to the A2216, Dulwich Village is easy for us to reach. If you’re just outside Dulwich Village, we cover Dulwich (1 mile south-east), Herne Hill (1 mile north-west), East Dulwich (1 mile north), West Dulwich (1 mile south) and Denmark Hill (1 mile north). Within a short drive, we also cover London (3 miles north), City of Westminster (5 miles north-west), Marylebone (5 miles north-west), Kensington (6 miles north-west), St Pancras (5 miles north) and Shoreditch (5 miles north).
What’s near Dulwich Village
Locally, jobs take us to homes and businesses close to Alleyn's School, The Crown and Greyhound pub and The Charter School and the streets around them. Dulwich Village has its own railway station: North Dulwich station. A little further out are Lewisham Shopping Centre (3.2 miles east) and Greenwich Castle (4 miles north-east). Green spaces nearby include Knight's Hill and Centre for Wildlife Gardening.
Dulwich Village questions
Is my home in Dulwich Village listed or in a conservation area?
For listing, use Historic England’s list; for conservation areas, ask the council. It matters most if you’re planning to re-roof in a different material.
Is parking a problem for a survey in Dulwich Village?
It depends on the street. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
Do you carry professional indemnity insurance?
We hold professional indemnity and public liability insurance, for every survey we carry out.
What’s in the report?
It explains what we saw, what it means and what we’d suggest, with photos throughout. It also says if any part of the roof couldn’t be seen safely.
Does ELD work under paving or planting?
On some roofs, yes. What sits on the membrane affects the method so we look at the roof first.
What happens after the survey?
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.
How do you choose the testing method?
We choose the method that suits the roof. You’ll know which method we plan to use before we start.
Roof by roof
Green and ballasted roofs
Green roofs and ballasted roofs cover the waterproofing. Some methods can work through these layers, depending on the build-up.
Bituminous membranes
Bitumen roofs can frequently be tested electronically, depending on what’s below.
How we price electronic leak detection
We confirm the exact price before you book. This is what makes a difference:
- The number of roofs, including extensions and garages
- The use of thermal imaging or a drone
- How big the roof is
- Whether it is a home or a commercial building
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. You’ll know the exact price before booking.
Helping us price your survey
We will usually ask about:
- Pictures of the roof from a safe spot, if you have them
- The reason for the survey, such as buying, a leak or storm damage
- Any marks or damp showing indoors
- Access details, such as a loft hatch or a shared roof
We survey roofs seven days a week. To arrange a day that suits you, call 07833 053749 or use the contact form.
DIY checks: what’s safe
You can learn a lot from ground level. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Never climb onto the roof to look.
Keep a simple record: dates of leaks, photos from ground level and any work done on the roof. Send it with your enquiry and it will help the survey.