Greater London · London and the South East
Electronic leak detection in Sewardstone, Greater London
Electronic leak detection across Sewardstone, with over 20 years’ experience behind it. You get a clear report with photos.
- Leaks under green or ballasted roofs
- Waterproofing to test before it’s covered
- Leaks at pipes, outlets or fixings
Why get it checked now?
ELD before paving, ballast or planting goes on is simpler. Once layers are added, finding a breach is harder. Work on a London roof is rarely simple to arrange, with parking, neighbours and access all to think about. That is a good reason to find problems early, while there is time to plan, rather than in a rush after a leak.
Bigger, taller and commercial roofs take more time to survey, so they’re priced to match. You’ll know the figure before booking.
What you get with us
- Thermal imaging and drone inspection where they help
- An independent look at the roof
- More than 5,000 surveys completed
- Over 20 years’ experience
Electronic leak detection for homes and businesses in Sewardstone
Our ELD testing covers flat roofs in Sewardstone and the rest of London and South East England. A visit usually takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. We quote electronic leak detection for each roof, as the method and time depend on the roof. You get a written report with photos. If you are worried about leaks at pipes, outlets or fixings and a flat roof leak that can’t be traced, a survey will tell you what’s going on, on liquid-applied waterproofing, single-ply roofs and green roofs alike.
Across London, flat roofs are everywhere, from back additions and dormers to roof terraces, blocks of flats and offices. Coverings range from felt and asphalt to EPDM rubber, GRP fibreglass and single-ply membranes, each with its own weak points. In Sewardstone, as anywhere in London, the right approach depends on what the roof is made of. Older flat roofs are often felt or asphalt, newer ones rubber or GRP.
We keep jargon out of it: where something needs attention, it says so plainly, and where it can wait, that’s said too.
- Place
- Sewardstone (E4)
- Region
- Greater London
- Prices
- Quoted for your roof
- Reports
- A written report with photos, by email
- Survey days
- Weekdays, Saturdays and Sundays
- Cover
- Professional indemnity and public liability
- Call
- 07833 053749
- Last updated
- 27 October 2026
Common roof problems in Sewardstone
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.
Typical things we’re asked to look at include:
- Leaks through a flat roof with no obvious cause
- Leaks under green or ballasted roofs
- Repairs that haven’t stopped the leak
- New membranes needing a check before handover
Parking in Sewardstone, as in most of London, takes a little planning: tell us about permits, visitor bays or off-street space when booking.
Questions to ask before booking
- Whether the loft space is looked at, where there is one
- Their drone registration, if they fly one
- Will the report include photos?
- Which viewpoints they use to see the roof
Tips that help
Some practical points come up on survey after survey. They apply to most roofs:
- Keep a note of leaks after rain
- Test new membranes before covering them
- Do not leave water getting in
- Share any drawings of the roof
The report records each breach location with photos. Your roofer uses it to carry out repairs.
Check contractors protect the waterproofing when fitting equipment. Check the roof after they’ve finished.
How the survey changes by roof type
Single-ply membranes
ELD frequently works on single-ply membranes, depending on the type and build-up.
Inverted and paved roofs
A terrace or paved roof hides the waterproofing. Suitability depends on the layers.
The survey, step by step
The visit has one job: to look at the flat roof membrane as closely as is safe and record what we find. Everything we note and photograph goes into the written report. It usually takes a length of time set by the membrane area and the build-up, which we’ll explain when we quote. Many London properties are flats or terraces with no 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 you book.
- You let us know about the roof and where water is showing.
- The roof is assessed for suitability first.
- The test method is chosen to suit the roof.
- The membrane is tested and breaches are found.
- A report with photos shows where each breach is.
Getting ready for the survey
- Find any records of previous roof work
- Keep pets inside or away from the areas we are looking at
- Check we can get to the back of the property
Getting a price
Our phone lines are open seven days a week, including Saturdays and Sundays. To book or ask a question, ring 07833 053749 or send us an email.
Related advice
Common questions in Sewardstone
Do you carry out roof surveys in Sewardstone?
We do. The survey and report are the same in Sewardstone as anywhere else, and visits run on weekdays and weekends.
Can parking be tricky for a visit in Sewardstone?
It can be, so it helps to let us know about permits, visitor bays or off-street space as you book. That way the visit can be planned around it.
When does the report arrive?
The Premium Survey report comes the same day, the Standard within 24–48 hours and the Basic within 48 hours. Each one is emailed, ready to forward.
How do I book a survey in Sewardstone?
To book, call 07833 053749 or email us and tell us the address and what you want to find out. We will confirm the price and find a day that suits.
Do you look in the roof space?
Normally, if there is one and it can be reached safely. From inside, the underside of the roof often shows damp, staining or daylight that cannot be seen from outside.
Do I need to be at home?
Someone needs to let us in if we are looking inside or in the loft. We will talk about access as you book.
Will you fly a drone over my roof?
Where it helps and it is safe, yes. Flights depend on the weather on the day and airspace rules. We’re a CAA-registered drone operator.
Landlord and commercial surveys in Sewardstone
Landlords and agents in Sewardstone book surveys as well as homeowners. A written report with photographs gives you a clear record of the flat roof membrane, which helps you plan work between tenancies.
If the property is let, the agent or a tenant can let us in. Surveys run on any day of the week, which helps when tenants work during the week.
Flat roofs in Sewardstone
Historic houses such as Forty Hall, about 2.8 miles west, show how far back building in the area around Sewardstone goes. Older roofs in the wider area can hide decades of patch repairs, so the detail matters. Further from the centre, London’s housing takes in interwar semis with hipped roofs in clay or concrete tiles as well as slate-roofed terraces. Bay roofs, hip ridges and dormers from later loft conversions are the details that set these houses apart. Next to the main roofs there’s typically a flat roof somewhere, whether on an extension, a garage or a commercial unit.
For landlords with property near Enfield Lock station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies. For businesses in and around places such as Edmonton Green Shopping Centre, flat roofs over shops and units are easy to forget until water comes through a ceiling.
Sewardstone is about 2 miles south of Waltham Abbey, in Greater London. We survey roofs in Sewardstone and the rest of Greater London, as part of our work across London and the South East. Sewardstone is one of the towns and villages in Greater London where we work. For surveys nearby, see our London page.
Every address in E4 is within our area for electronic leak detection, from the main roads to the quietest streets. We cover properties on Godwin Close, Sewardstone Road and Hawes Lane. Neighbouring places we cover for electronic leak detection include Enfield Island Village (1 mile north-west), Brimsdown (1 mile west), Enfield Lock (1 mile west), Freezywater (1 mile north-west) and Sewardstonebury (1 mile south). Within a short drive, we also cover London (12 miles south), City of Westminster (12 miles south-west), Marylebone (12 miles south-west), Kensington (14 miles south-west), St Pancras (11 miles south-west) and Shoreditch (10 miles south).
Local landmarks in Sewardstone
We work in homes and buildings around Oasis Academy Enfield, The Plough pub and Lee Valley Park, among other places. The closest station to Sewardstone is Enfield Lock station, about 1.2 miles north-west. A little further out are St Michaels Hospital (3.5 miles west) and The Epping Forest Museum (2.2 miles south-east). The countryside around Sewardstone includes Home Mead and Bowyer's Water.