Greater London · London and the South East
Electronic Leak Detection in Streatham
Find out the condition of the flat roof membrane at your property in Streatham from an independent roof surveyor. We visit on weekdays and at weekends.
- Patched roofs that still leak
- Waterproofing to test before it is covered
- Leaks at pipes, outlets or fixings
Electronic leak detection in Streatham: what you get
Water can travel under a flat roof membrane before it shows inside. That makes leaks hard to trace by eye. Electronic leak detection tests the membrane itself, to find where it has been breached. We test and report, and the repair is for your roofer. On suitable roofs, it replaces guesswork with a located breach. We then send you the results in a written report. If you’re worried about failed seams and laps and damage from equipment installers, a survey will tell you what’s going on, on liquid-applied waterproofing, roof terraces and balconies and flat roof membranes alike.
Water getting through a flat roof in London can travel under the covering and appear some way from the hole. Outlets, upstands against parapet walls and joins with the main roof are frequent culprits. In a block or conversion in Streatham, the flat roof is often a shared part of the building.
Findings are set out part by part, from the main slopes down to the gutters and outlets, each with a short note and a photograph. You’ll see the good as well as the bad.
- Location
- Streatham (SW16, SW2, CR4, SW12)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Reports
- Written, with photos, emailed to you
- Survey days
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Before and after the survey
These tips come from what we see on roofs every week, before and after a survey:
- Do not let outlets block
- Find the breach before more patching
- Note where leaks show inside and when
- Act on new leaks promptly
After your roofer repairs the breaches, a retest can confirm them, where the roof still suits the method.
Clear flat roof outlets regularly. Standing water puts more pressure on any weak point.
What electronic leak detection looks like in Streatham
The wider area around Streatham has a long history of building, with Kingswood House about 2 miles east. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and any change of roofing material on a listed home needs checking with the council first. 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. In a house like that, shared stacks, party-wall upstands and lead flashings all need looking at as far as they can be seen. Mixed in with those pitched roofs are lots of flat ones, over rear extensions, dormers, garages and shops.
Streatham is in London, so parking needs planning: a visitor permit or a nearby bay makes the day easier, as a space near the door can’t be promised. Take a building like St Andrew's Catholic Primary School: schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks. For businesses in and around places like Southside Wandsworth, the flat roofs over shops and commercial units are worth checking before a leak, not after.
Streatham is about 5 miles south of London, in Greater London. We survey roofs in Streatham and the rest of Greater London. Streatham is one of the towns and villages in Greater London where we work for electronic leak detection.
We survey roofs across SW16, SW2, CR4 and SW12 for electronic leak detection and the streets around it. We offer electronic leak detection to properties on Stanthorpe Road, Gleneagle Mews and Madeira Road and the roads around them. Being close to the A205 and A216, Streatham is simple for us to get to. Neighbouring places we cover for electronic leak detection include Streatham Park (1 mile west), Furzedown (1 mile west), Streatham Hill (1 mile north), Hyde farm estate (1 mile north) and Grange Mills (1 mile north-west). Within a short drive, we also cover London (5 miles north), City of Westminster (6 miles north), Marylebone (6 miles north), Kensington (6 miles north-west), St Pancras (7 miles north) and Shoreditch (7 miles north).
Near you in Streatham
In Streatham, that means homes and buildings near Bishop Thomas Grant Catholic Secondary School, Streatham Common and Waldorf School of South West London and the streets around them. Streatham has its own railway station: Streatham station. Well-known places in the area include Clockworks Museum (1.1 miles east) and Southside Wandsworth (3.3 miles north-west). The countryside around Streatham includes Knight's Hill and Battersea Park Lake.
What electronic leak detection does not cover
Our findings are based on what we can see safely on the day, so some things are outside what a survey can do:
- Roofs whose membrane or build-up is not suitable
- Carrying out the repair work
- Leaks from walls, copings or rooflights
If in doubt, ring 07833 053749 or email us and we’ll suggest the right survey. What our survey covers.
Roof types and parts we check
- Single-ply roofs
- Green roofs
- Liquid-applied waterproofing
- Commercial flat roofs
- Flat roof membranes
- Roof terraces and balconies
What happens if roof problems are left?
Opening up a roof to hunt for a leak is disruptive. ELD aims to locate the breach first so your roofer knows where to work. In Streatham, as across London, an overflowing gutter soaks the wall below. A blocked outlet ignored for a winter or two can mean damp walls inside.
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. We quote electronic leak detection for each roof, as the method and time depend on the roof.
Why choose Independent Roof Survey in Streatham
- Surveys seven days a week
- 5,000+ roofs surveyed
- Professional indemnity and public liability insurance
- Drone and thermal imaging surveys available
Take a look at what a roof survey costs or two real surveys.
Streatham questions
Is parking a problem for a survey in Streatham?
Typically it’s manageable with a little notice. Let us know the parking rules on your street and we will work around them.
Is Streatham in the area you cover?
Yes, Streatham is one of the places we work. The survey and report are the same in Streatham as anywhere else.
How do I book a survey in Streatham?
Just call 07833 053749 or use the contact form with the address. We’ll ask a few questions, confirm the price and agree a date.
Which days do you carry out surveys?
Visits run seven days a week in the daytime, which suits people who work during the week. Let us know your preferred days when you book.
What insurance do you have?
Our surveys are covered by professional indemnity and public liability insurance. Ask if you need details for a managing agent or building owner.
Do you need to get into the loft?
Yes, where the survey calls for it and there’s safe access. We look for staining, damp, daylight and signs of movement.
What’s in the report?
You get our findings in writing, part by part, with photos. The most urgent items are made clear.
Towns and villages near Streatham
Other services in Streatham
How the survey changes by roof type
Liquid-applied waterproofing
What lies under a liquid coating decides if ELD will work.
Bituminous membranes
Older felt roofs frequently have seams and patches where breaches occur. Testing depends on the roof.
How it works
The aim of the visit is simple: to see as much of the flat roof membrane as can be seen safely and record it clearly. Everything we note and photograph goes into the written report. The visit usually takes as long as needed for the roof’s area and construction, which we’ll explain when we quote. In Streatham, as in much of London, lots of properties are flats or terraces without side access, so the back of the roof is often seen from upstairs windows, from inside or, where a flight is allowed, from the air. If the building has a managing agent or access rules, tell us when you book.
- First, you tell us about the roof build-up and where water is showing.
- We confirm whether the roof is suitable for electronic testing.
- 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
- Buyers: confirm access with the estate agent or seller
- Check we can get to the back of the property
- Point out any leaks or damp patches
Getting a price
If you have photos of the roof, send them over. Take them safely from ground level or a window. To send them or to book, ring 07833 053749 or use the contact form.
Advice
Rented homes, blocks and businesses
Freeholders and residents’ companies use a roof report to plan and budget.
We survey roofs for letting agents and landlords as well as householders. A photo-illustrated written report gives you a clear record of the flat roof membrane, which helps you plan work between tenancies.