Greater London · London and the South East
Norwood Green Electronic Leak Detection
We carry out electronic leak detection in Norwood Green and the rest of Greater London. We survey seven days a week.
- Leaks showing away from the breach
- Patched roofs that still leak
- Gaps at membrane joints
How electronic leak detection works in Norwood Green
Electronic testing locates holes in the waterproofing but not every way water gets in. Water coming through walls, copings, rooflights or plumbing won’t show on the test. We’ll tell you if we think the leak is coming from somewhere else. It won’t show water getting in through brickwork or around frames. The report makes clear what was and wasn’t tested. We will point you to the likely next step. Common reasons to book are leaks under green or ballasted roofs and holes around roof penetrations, on commercial flat roofs, flat roof membranes and single-ply roofs.
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 converted house in Norwood Green, the roof above may belong to the building rather than one flat.
What you get is a clear record of the flat roof membrane on the day we saw it. It’s useful right away, and a good reference for later, such as when you want to compare after future work.
- Location
- Norwood Green (UB2, TW5, TW7)
- Wider area
- Greater London
- Price
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- Appointments
- Weekdays, Saturdays and Sundays
- Insured
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
Surveys for landlords and agents in Norwood Green
Buyers’ agents can book surveys on behalf of their clients. The report is emailed, so it can go straight to your client, photographs included.
Shared roofs need a little more planning: access has to be agreed with whoever owns or manages the building. Mention it when you get in touch and we’ll plan the visit with that in mind.
What you can safely check yourself
A lot can be seen from the ground. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Please do not climb up for a closer look.
A DIY look is useful, but it isn’t a survey. From ground level, valleys, flashings and the backs of chimneys are frequently out of sight, and those are details a survey looks at closely.
Places near Norwood Green
More services for Norwood Green
Common roof problems in Norwood Green
Holes in a membrane often come from feet, tools or debris. Many are tiny but water still finds them.
Signs worth acting on include:
- Repairs that haven’t stopped the leak
- Leaks at pipes, outlets or fixings
- Damage from equipment installers
- Leaks through a flat roof with no obvious cause
For landlords with property near Southall station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Before booking any roof surveyor
- Whether the price includes VAT
- Whether any drone flown is registered with the CAA
- How they plan to inspect the roof safely
- Are they insured for the work?
Before and after the survey
Over many surveys, some simple habits stand out as worth the effort:
- Clear flat roof outlets regularly
- Ask contractors to protect the membrane
- Check new waterproofing before handover
- Avoid repeated repairs without finding the cause
Questions about the results are welcome. We can talk you through the findings.
Do not leave a flat roof leak running. Water under a membrane can spread.
Electronic leak detection around Norwood Green
Alongside Victorian and Edwardian terraces, outer London has a great many interwar semis, frequently with hipped roofs of clay or concrete tiles. Hips, bay roofs and later loft conversions are typical of those semis, if your home is one of them. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. The wider area around Norwood Green has a long history of building, with Osterley House about 0.6 miles south-east. 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.
If you run a business near Treaty Centre, the flat roofs over shops and commercial units are worth checking before a leak, not after. A roof leak in a hotel or guest house around Norwood Green means lost rooms as well as repairs, so it pays to find faults before guests do.
Norwood Green is about 1 mile south-east of Southall, in Greater London. Anywhere in Norwood Green, we can come and survey your property. Across Greater London, we cover Norwood Green and the places around it. We also survey roofs in London.
We work across the UB2, TW5 and TW7 postcode area for electronic leak detection and the streets around it. Streets in the area include Norwood Road, Stour Avenue and Durham Avenue, all of which we cover. Being close to the M4 and A3005, Norwood Green is easy for us to reach for electronic leak detection. We also cover the places around Norwood Green: North Hyde (1 mile west), Heston (1 mile south-west), Osterley (1 mile south-east), Spring Grove (1 mile south-east) and Lampton (1 mile south). We also work in nearby towns like London (12 miles east), City of Westminster (9 miles east), Marylebone (9 miles east), Kensington (7 miles east), St Pancras (11 miles east) and Shoreditch (13 miles east).
What’s near Norwood Green
We work in homes and buildings around Inwood Park, The Plough Public House and Heston Community School and the streets around them. The nearest railway station is Southall station, roughly 1 mile north-west of the centre. Nearby you’ll also find St Bernard's Hospital (1 mile north-east) and Museum of Army Music (2.7 miles south). The countryside around Norwood Green includes Garden Lake and Castlebar Hill.
Why act early in Norwood Green
Opening up a roof to hunt for a leak is disruptive. Electronic testing finds the hole first so your roofer knows where to work. In Norwood Green, as across London, an overflowing gutter soaks the wall below, which can lead to damp inside. A small blockage left for a few winters becomes a damp problem.
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. The price is confirmed before booking.
Why book with us
- Thermal imaging and drone inspection where they help
- Plain-English reports with photos
- CAA-registered drone operator (Flyer ID and Operator ID)
- More than 5,000 surveys completed
Common questions in Norwood Green
How do I find out if my home in Norwood Green is listed?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it’s in a conservation area. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Can you look at the flat roof of a hotel or office near Norwood Green?
Yes, commercial buildings, hotels included, are part of the work. Access to the roof is sorted out with whoever manages the building before the day.
Can you tell me if my roof has asbestos?
No. Asbestos surveys and sampling are not something we do. The report may flag materials that could contain asbestos on buildings built or refurbished before 2000, with a recommendation to have a specialist asbestos surveyor check before it’s disturbed.
Does the report include photos?
Yes. Photos are taken throughout the survey, and the report uses them to show each finding alongside our recommendations.
Do you cover Norwood Green for electronic leak detection?
Yes. We survey roofs across London and South East England, Norwood Green included.
How long does electronic leak detection take?
It normally takes more time on a big roof than a small one, with the construction of the roof playing a part too.
Will you fly a drone over my roof?
Yes, where it’s applicable. Whether we can fly on the day depends on the weather and the airspace rules. We’re a CAA-registered drone operator.
How it works
On the day, we start by asking what you’ve noticed and what you need to know. We then inspect everything that can be seen safely. The survey usually takes a time that depends on the roof’s area and construction, which we’ll explain when we quote. In Norwood Green, as in much of London, plenty 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, let us know when booking.
- We start by finding out what the roof is made of and where it leaks.
- 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
- Keep pets out of the way during the survey
- Tell us about parking before the day
- Agree roof access with the managing agent if it is shared
How to book
Surveys can be booked for weekdays, Saturdays or Sundays. To arrange a day that suits you, call 07833 053749 or use the contact form with the address and the days you’d prefer.