Greater London · London and the South East
Streatham Hill Electronic Leak Detection
Know where you stand with the flat roof membrane before you decide what to do next. Electronic leak detection in Streatham Hill.
- Leaks showing away from the breach
- A flat roof leak that can’t be traced
- Patched roofs that still leak
How electronic leak detection works in Streatham Hill
Our ELD report shows where each breach was found, with photographs. It tells your roofer exactly where to repair rather than guessing. We don’t estimate repair costs, so your roofer prices the work. A retest after repairs can check the work, where the roof still suits the method. Results come in a written report with photos. We are often asked to look into leaks through a covered membrane and repairs that haven’t stopped the leak, across green roofs, flat roof membranes and liquid-applied waterproofing.
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. Which one is on a roof in Streatham Hill shapes how it is checked. Older flat roofs are frequently felt or asphalt, newer ones rubber or GRP.
If any part of the flat roof membrane couldn’t be seen safely, we say so in the report. You’ll know exactly what was inspected and what wasn’t.
- Where
- Streatham Hill (SW2, SW16, SW12)
- Wider area
- Greater London
- Price
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- Survey days
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
What this survey can’t tell you
No survey can tell you everything, and we’d rather be clear about that before booking. Keep these in mind:
- Parts of the roof covered by fixed equipment
- Moisture spread under the membrane
- Water entering through details rather than the membrane
If in doubt, ring 07833 053749 or use the contact form and we will suggest the right survey. What a survey covers and doesn’t.
What this survey covers
- Green roofs
- Liquid-applied waterproofing
- Single-ply roofs
- Flat roof membranes
- Roof terraces and balconies
- Commercial flat roofs
Streatham Hill questions
How do I find out if my home in Streatham Hill is listed?
We cannot confirm that for you, but Historic England’s list and your council can. A change of roofing material may need consent in either case.
Is Streatham Hill in the area you cover?
Yes. Our area covers London and South East England, and Streatham Hill is part of that. Just ring 07833 053749 or use the contact form and let us know about the property, and we will talk through which survey suits.
Is this an asbestos survey?
No. Asbestos surveys and testing are not part of what we do. We flag materials that could contain asbestos, such as cement sheets or soffits on pre-2000 buildings, and recommend a specialist asbestos surveyor checks them before they’re disturbed.
Does ELD include fixing the breach?
No. ELD is testing only. The report shows where each breach is for your roofer to repair.
Can you find leaks on a covered flat roof?
On some roofs, yes. What sits on the membrane affects the method so we check the roof first.
Does electronic leak detection work on all membranes?
That depends on the roof’s membrane and layers. Share any details you have and we’ll confirm suitability.
Will you fly a drone over my roof?
Where it helps and the rules allow, yes. We hold a CAA Flyer ID and Operator ID and fly a drone under 250g, and every flight depends on the airspace and the weather.
Practical tips
Some practical points come up on survey after survey. They apply to most roofs:
- Check new waterproofing before handover
- Clear flat roof outlets regularly
- Get leaks traced quickly
- Use boards when working on the roof
If we think the leak isn’t coming through the membrane, the report says so, with a suggestion of what to check next.
Consider testing a new membrane before it is covered. It’s easier to find holes before more layers are added.
When to book a survey in Streatham Hill
A breach can be left during installation. ELD on a new roof can show holes before they cause leaks.
Things that often lead to a survey include:
- Holes left by work on the roof
- Holes around roof penetrations
- Waterproofing to test before it’s covered
- Leaks under green or ballasted roofs
Controlled parking zones are common in London, so mention any permit rules for Streatham Hill, along with any off-street space.
Questions to ask before booking
- Will the report include photos?
- When you’ll get the report
- Whether you can ask questions once you have the report
- Whether the loft space is looked at, where there is one
Also near Streatham Hill
What else we do in Streatham Hill
Checking the roof from the ground
Keep a simple record: when leaks happen, ground-level photos and any past roof work. Share it with us when you book and it will help the survey.
Inside, the loft is a good place to look, with care. Use a torch and stay on the joists or boards, and look for staining, damp timber or daylight coming through.
Why get it checked now?
Chasing a leak again and again is frustrating. A clear record of where the breaches are helps break that cycle. In Streatham Hill, as in much of London, water from a roof defect can reach a neighbour’s home as easily as yours: a blocked parapet gutter or slipped slate can let water into the flat below or the house next door. Dealing with it early is far less disruptive.
What a survey costs comes down to the roof itself: its size, its height, how many sections it has and how it can be reached and seen safely. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Why book us in Streatham Hill
- An independent look at the roof
- Photos and a written report every time
- Satisfaction rate of 98%
- 5,000+ surveys completed
What happens on the day
We look at the roof from outside and, where it is relevant and there is safe access, from inside the loft space too. In the loft, the signs we look for are staining, damp, daylight and sagging, as far as the space allows. The whole visit usually takes more time on a big roof than a small one, with the construction of the roof playing a part too. From the street, a London terrace normally shows only its front slope or parapet, so a visit in Streatham Hill 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 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.
How to prepare
- Let us know about parking before the day
- Keep pets out of the way during the survey
- Unlock side gates and any roof access doors
Book a survey
If you are buying, it helps to book soon after your offer is accepted, so you have the findings in time to act on them before you exchange. Otherwise, simply ring 07833 053749 or send us an email whenever suits you.
Related advice
What electronic leak detection looks like in Streatham Hill
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. Shared chimney stacks, party-wall upstands and lead work come with this kind of house. Mixed in with those pitched roofs are plenty of flat ones, over rear extensions, dormers, garages and shops. About 1.9 miles east lies Kingswood House, a reminder of how long the area around Streatham Hill has been built on. Older roofs in the wider area can hide decades of patch repairs, so the detail matters.
If you look after a shop, office or commercial unit, for instance near Southside Wandsworth, the flat roofs over shops and commercial units are worth checking before a leak, not after. If you let a flat or house near Streatham Hill station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Streatham Hill is about 2 miles south of Stockwell, in Greater London. Houses, flats, blocks and commercial buildings in Streatham Hill can all book electronic leak detection, with a written report and photographs every time. We cover towns and villages across Greater London, from the larger towns to small villages.
All of SW2, SW16 and SW12 is within our area for electronic leak detection. Local streets include Keymer Road, Romeyn Road and Palace Road, all of which we cover. Main roads around Streatham Hill include the A205. We also cover the places around Streatham Hill: Tulse Hill (1 mile north-east), Hyde farm estate (1 mile west), Streatham (1 mile south), Grange Mills (1 mile west) and Clapham Park (1 mile north-west). We also work in nearby towns such as London (4 miles north), City of Westminster (5 miles north), Marylebone (5 miles north), Kensington (5 miles north-west), St Pancras (6 miles north) and Shoreditch (6 miles north).
Local landmarks in Streatham Hill
In Streatham Hill, that means homes and buildings near City Heights E-ACT Academy, Streatham Common and The Holland Tringham pub and the streets around them. Streatham Hill has its own railway station: Streatham Hill station. Other landmarks nearby include Tooting Bec Hospital (1.4 miles south-west) and Southside Wandsworth (3.2 miles west). Not far away are Battersea Park Lake and Knight's Hill.