Greater London · London and the South East
Electronic Leak Detection in Lessness Heath
Electronic leak detection around Lessness Heath, with findings in writing and pictures to back them up. Weekday and weekend visits available.
- Leaks through a flat roof with no obvious cause
- Leaks through a covered membrane
- Stains far from any visible defect
What affects the cost of electronic leak detection
Every roof is different, so prices are confirmed before you book. These are the things that affect it:
- Extensions, dormers and garages with roofs of their own
- The use of thermal imaging or a drone
- Whether it is a home or a commercial building
- Features like valleys, chimneys, dormers and parapets
The cost of a survey depends on the roof: its size, its height, how many sections it has and how safely it can be seen. Electronic leak detection is quoted for your roof, because the method depends on the roof.
What to let us know when you contact us
A few details help us point you to the right survey and price. When you contact us, tell us:
- Anything about access we should know
- Any deadline, such as an exchange date
- Pictures of the roof from a safe spot, if you have them
- The property’s address and postcode
Getting a price is simple: just phone 07833 053749 or drop us an email, let us know about the property and we’ll explain which survey suits. We confirm the price before anything is booked.
How electronic leak detection works in Lessness Heath
A leak in a flat roof often shows up a long way from where the water gets in. 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. Typical surveys look at waterproofing to test before it’s covered and holes left by work on the roof, on flat roof membranes, liquid-applied waterproofing and roof terraces and balconies.
Commercial and residential blocks across London frequently have big flat roofs with plant, rooflights and access walkways. Every penetration and upstand is a place where a membrane can fail. For a building in Lessness Heath, access is agreed with whoever manages the roof before the visit. Rooflights, plant supports and pipe entries are common places for a membrane to fail.
The report records the flat roof membrane as we found it on the day. It is useful right away, and a good reference for later.
- Place
- Lessness Heath (DA17, DA8, DA7)
- Region
- Greater London
- Prices
- Quoted for your roof
- Reports
- Written, with photos, emailed to you
- Survey days
- Monday to Sunday, daytime
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
Also near Lessness Heath
What else we do in Lessness Heath
Local flat roofs in Lessness Heath
Red House, about 2.3 miles south-west, is one of the historic houses in the wider area around Lessness Heath. If your house is among the older ones, expect a mix of original materials and later repairs on the roof, and the council can say whether a home is in a conservation area. 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. If your home in Lessness Heath is one of them, bay roofs, hips and later dormers each have their own details. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
For site and facilities teams at buildings such as Lessness Heath Primary School, schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks. For landlords with property near Belvedere station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Lessness Heath is about 3 miles east of Plumstead, in Greater London. Surveys in Lessness Heath work the same way as everywhere we cover: a careful inspection, photographs and a written report. We cover towns and villages across Greater London. We also survey roofs in London.
Every address in DA17, DA8 and DA7 is covered for electronic leak detection, from the main roads to the quietest streets. We cover properties on Cray Road, Clive Road and Erith Road and the roads around them. Other places close to Lessness Heath include Belvedere (1 mile east), Erith (1 mile south-east), Northumberland Heath (1 mile south-east), West Heath (1 mile south-west) and Bexley Riverside (1 mile south-east). Larger places within reach include London (11 miles west), City of Westminster (13 miles west), Marylebone (13 miles west), Kensington (15 miles west), St Pancras (12 miles west) and Shoreditch (10 miles west).
Local landmarks in Lessness Heath
In Lessness Heath, that means homes and buildings near Priory Club pub, Trinity Church of England School and Trinity School, among other places. The closest station to Lessness Heath is Belvedere station, roughly 0.5 miles north. Other landmarks nearby include Broadway Shopping Centre (2.1 miles south) and Erith and District Hospital (0.9 miles south-east). Green spaces nearby include Crossness Nature Reserve.
Why it is worth a survey now in Lessness Heath
Chasing a leak again and again is frustrating. A report showing the breach points gives your roofer a clear target. In Lessness Heath, as in much of London, water from a roof defect can reach a neighbour’s home as easily as yours: failed flashings and blocked valley gutters can send water into more than one home. Dealing with it early is far less disruptive.
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. You’ll know the figure before booking.
Why book with us
- Independent findings on the roof’s condition
- Covered by professional indemnity and public liability insurance
- 20+ years’ experience
- 98% of clients satisfied
Take a look at what a roof survey costs or what we found on two real jobs.
What happens on the day
The visit has one job: to see as much of the flat roof membrane as can safely be seen and record it clearly. Everything we note and photograph goes into the written report. It typically takes longer on a large roof than a small one, and the build-up of the roof makes a difference too. Many London properties are flats or terraces with no 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. Mention any building rules, key holders or managing agents when you book.
- We agree the area to be tested.
- The surface is prepared for the chosen method.
- We work across the roof with the test equipment.
- Each breach found is located and recorded.
- The report is sent for your roofer to act on.
Getting ready for the survey
- If the roof is shared, arrange access with whoever manages the building
- Make sure we can get to the back of the property
- Mention any parking restrictions on your street
Book a survey
We survey roofs on weekdays and at weekends. To arrange a day that suits you, call 07833 053749 or send us an email with the address and the days you’d prefer.
Related advice
Questions from Lessness Heath
Is my home in Lessness Heath listed or in a conservation area?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. The answer matters most when a change of material is on the cards.
Do you cover Lessness Heath?
Yes. We cover the whole of London and South East England, and Lessness Heath is part of that. Just phone 07833 053749 or send us an email and tell us about the property.
What does the report include?
It works through the roof part by part, in writing and with photos, finishing with recommendations. Points are put with the most urgent first where relevant.
Does the report include photographs?
Yes. We photograph the roof as we go, and they go into the written report alongside our recommendations.
Does ELD include fixing the breach?
No, the test finds the breaches and your roofer repairs them. Your roofer uses the report to target the repair.
How soon will I get the report?
Each package has its own report time. Basic: within 48 hours. Standard: 24 to 48 hours. Premium: the same day. If you have a deadline, such as an exchange date, tell us when you book.
What happens after the survey?
You will receive the report by email, and you decide the next step: use it with a seller, an insurer, a roofer or a managing agent.
What we are asked to look at in Lessness Heath
Seams are a common weak point in flat roof waterproofing. Small openings at laps can leak for months before it shows.
A survey can pick up problems such as:
- Punctures from foot traffic or tools
- Leaks that return after repairs
- Water coming in under a flat roof
- Leaking laps in the waterproofing
If you look after a shop, office or commercial unit, for example near Broadway Shopping Centre, a flat roof over a business is out of sight and out of mind until it leaks.
Before you book anyone
- Which parts of the roof they’ll actually see
- Whether you get a written report with photos
- When you’ll get the report
- How long they’ve been surveying roofs
Tips from our surveys
A little preparation and a few simple habits help. Our tips:
- Note where leaks show inside and when
- Share any drawings of the roof
- Consider ELD before paving or planting goes on
- Avoid repeated repairs without finding the cause
If water has been getting in, insulation under the membrane may be wet. Your roofer can advise on that and other checks can help judge it.
Make sure contractors protect the waterproofing when fitting equipment. Check the roof after they’ve finished.
DIY checks: what’s safe
Watch the gutters in a downpour, from a window or the ground. Water spilling over the edge can be a sign of a blockage or a gutter that has dropped.
A lot can be seen from ground level. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Never climb onto the roof to look.