Greater London · London and the South East
North Sheen Electronic Leak Detection
A careful look at the flat roof membrane at your property in North Sheen, with photographs and a written report.
- Damp inside with no sign on the roof
- Holes left by work on the roof
- Leaks under green or ballasted roofs
How it works
We work from the outside in: first the slopes, edges and gutters from every safe viewpoint, then the roof space where it can be reached. In total, it takes a length of time set by the roof’s area and construction, and we’ll give you a guide when quoting. In a London conversion, the way into the roof space is often from a communal landing or the top flat. If that applies to your building, it is useful to agree access with the neighbours or the managing agent first. Otherwise, the visit in North Sheen runs like any other.
- We agree the area to be tested.
- The surface is prepared for the chosen method.
- We work across the roof with the test equipment.
- We mark the breach locations in our records.
- The report is sent for your roofer to act on.
Preparing for the visit
- If the roof is shared, arrange access with whoever manages the building
- Dig out any old roof reports or invoices
- Have any questions written down, so nothing gets missed
Arrange a survey
You can call us seven days a week. To book or ask a question, ring 07833 053749 or drop us an email.
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Electronic leak detection in North Sheen: what you get
A leak in a flat roof frequently shows up a long way from where the water gets in. So the stain inside rarely sits under the hole. Electronic leak detection tests the membrane itself and locates the breach. We test and report and leave the repair to your roofer. On suitable roofs, it replaces guesswork with a located breach. We then send you the results in a written report. We survey commercial flat roofs, liquid-applied waterproofing and flat roof membranes, and the problems we are asked to look at most are holes around roof penetrations and leaks under green or ballasted roofs.
Commercial and residential blocks across London often have big flat roofs with plant, rooflights and access walkways. Each pipe, upstand and fixing through the covering is a possible weak point. For a building in North Sheen, access is agreed with whoever manages the roof ahead of the visit. Rooflights, plant supports and pipe entries are common places for a membrane to fail.
The report is written in plain words, so it makes sense without any roofing background. Photographs show what each point refers to, with the urgent items made clear.
- Location
- North Sheen (TW9, SW14, W4)
- Region
- Greater London
- Prices
- Quoted for your roof
- Reports
- A written report with photos, by email
- Survey days
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
Also near North Sheen
More services for North Sheen
What we can’t see
Before you book, it’s worth knowing what a survey will not do:
- Repairing the breaches (that’s for your roofer)
- The extent of water in the insulation
- Water entering through details rather than the membrane
If you are not sure which survey you need, call 07833 053749 or use the contact form and we’ll give you a straight answer before you book. The full list of what we check.
What this survey covers
- Roof terraces and balconies
- Green roofs
- Commercial flat roofs
- Liquid-applied waterproofing
- Single-ply roofs
- Flat roof membranes
Useful tips for North Sheen property owners
A little preparation and a few simple habits help. Some pointers:
- Keep foot traffic on flat roofs to a minimum
- Act on new leaks promptly
- Share any drawings of the roof
- Record dates and spots where water appears
If anything in the report isn’t clear, ask us. We can talk you through the findings.
Act on leaks quickly. The longer water gets in, the more insulation and decking can be affected.
How the survey changes by roof type
Bituminous membranes
Bituminous felt and modified bitumen membranes are common. The build-up decides which method will work.
Inverted and paved roofs
On inverted roofs, insulation sits above the membrane, which affects testing.
North Sheen: your questions answered
How do I find out if my home in North Sheen is listed?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Is parking a problem for a survey in North Sheen?
It rarely stops a survey, but it’s worth planning. Tell us what parking is available nearby, and the visit is planned around it.
How quickly is the report sent?
Report times are set by the package. Basic is within 48 hours, Standard is 24–48 hours and Premium is the same day. Mention any deadline when booking.
Can you find leaks on a covered flat roof?
On some roofs, yes. Covered roofs limit the methods we can use, so we check the build-up first.
Do you need to get into the loft?
If there’s a loft and safe access to it, yes. The roof space can show things the outside cannot, like damp timbers, staining or daylight.
Is it the same as a RICS Level 2 or Level 3 survey?
No. It is a specialist roof survey, not a RICS Level 2 or Level 3 building survey. It focuses on the roof, so it sits alongside a building survey rather than replacing it.
Can you survey in bad weather?
Light rain is usually fine; heavy rain and wind are different. In strong wind or heavy rain, a drone cannot fly and access may not be safe, so we’d move the date with you.
Local flat roofs in North Sheen
Outer London has lots of Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, often with hipped roofs in clay or concrete tiles. Bay roofs, hip ridges and dormers from later loft conversions are the details that set these houses apart. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere. Historic houses such as Kew Palace, about 1 mile north-west, show how far back building in the area around North Sheen goes. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and the council can say whether a home is in a conservation area.
Take a building like Kew Riverside Primary School: schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks. If you own a rental within reach of Kew Gardens station, flat roofs on let property tend to be checked only when they fail, which is the costly way round. If you run a business near Livat Hammersmith, the flat roofs over shops and commercial units are worth checking before a leak, not after.
North Sheen is about 3 miles south of Acton, in Greater London. We provide electronic leak detection for homes and businesses in North Sheen and nearby. Our Greater London coverage includes North Sheen and the places around it. There’s also a page for London.
Every address in TW9, SW14 and W4 is within our area for electronic leak detection, from the main roads to the quietest streets. Local streets include Kent Road, Ibis Lane and The Avenue, all of which we cover. Close by, we survey roofs in Kew (1 mile north), Grove Park (1 mile north-east), Strand-on-the-Green (1 mile north), East Sheen (1 mile south-east) and Mortlake (1 mile south-east). We also work in nearby towns such as London (8 miles east), City of Westminster (6 miles north-east), Marylebone (6 miles north-east), Kensington (4 miles north-east), St Pancras (8 miles north-east) and Shoreditch (9 miles east).
Local landmarks in North Sheen
We work in homes and buildings around Kew College Prep, Dukes Meadows and Chiswick School and the streets around them. There’s a railway station in North Sheen itself: Kew Gardens station. Well-known places in the area include Barnes Hospital (1.1 miles south-east) and Livat Hammersmith (2.5 miles north-east). Green spaces nearby include Kew Gardens Lake and Duke's Hollow.
Rented homes, blocks and businesses
Managing agents and residents’ management companies use roof surveys to plan maintenance. Recommendations are set out with the most urgent first where relevant.
Any of our surveys can be booked by landlords, agents and building managers in North Sheen. To discuss a property or a block, ring 07833 053749 or send us an email.
Prices for electronic leak detection in North Sheen
When we price a survey, we consider:
- Commercial roofs and larger buildings
- How big the roof is
- If the survey needs thermal imaging or a drone
- Building height and the viewpoints available
To find out what your survey will cost, call 07833 053749 or email us and let us know about the roof. We’ll confirm the figure before booking.
Helping us price your survey
Here’s what helps us most when you contact us:
- Where the property is, with the postcode
- Whether there’s a loft hatch, a shared roof or tricky access
- The kind of building and roof involved
- Photos of the roof, taken safely from the ground or a window
We confirm the price for the job before booking, so you know the cost up front. We quote electronic leak detection for each roof, as the method and time depend on the roof. For a price for your roof, ring 07833 053749 or email us.