Greater London · London and the South East
Electronic leak detection in New Malden, Greater London
A careful look at the flat roof membrane at your property in New Malden, with photos and a written report.
- Breaches around outlets and penetrations
- Leaks through a flat roof with no obvious cause
- New membranes needing a check before handover
Common questions in New Malden
Does a conservation area affect roof work in New Malden?
The council and Historic England’s list are the places to check. Either can affect what roof work is allowed, so it’s worth checking before planning any.
Can parking be tricky for a visit in New Malden?
Parking in New Malden, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Do you need to get into the loft?
If it’s needed and safe to reach, yes. We look for staining, damp, daylight and signs of movement, as far as the space allows.
Which days do you carry out surveys?
Surveys can be booked for any day of the week: Monday to Friday, Saturdays and Sundays. Tell us which days suit you when booking.
Do you use drones?
Yes, where it is applicable. Whether we can fly on the day depends on the weather and the airspace rules, including flight restriction zones near airports. We hold a CAA Flyer ID and Operator ID.
When does the report arrive?
It depends on the package: Basic within 48 hours, Standard in 24–48 hours and Premium the same day. The report is emailed to you.
Does the report include photos?
Yes. We photograph the roof as we go, and the report uses them to show each finding.
Electronic leak detection for homes and businesses in New Malden
ELD finds breaches in the membrane but not every way water gets in. Leaks from walls, copings, rooflights or pipes need other checks. If the evidence points elsewhere, we’ll say so. It will not show water getting in through brickwork or around frames. The report makes clear what was and wasn’t tested. You will also know what to check next. We’re often asked to look into stains far from any visible defect and leaking laps in the waterproofing, on single-ply roofs, liquid-applied waterproofing and commercial flat roofs.
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, and each fails in its own way. Which one is on a roof in New Malden shapes how it is checked. Older flat roofs are often felt or asphalt, newer ones rubber or GRP.
The report works through the roof section by section, from the coverings down to the gutters. It records what’s sound as well as what isn’t.
- Location
- New Malden (KT3, KT1, SW20)
- Region
- Greater London
- Cost
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Survey days
- Weekdays, Saturdays and Sundays
- Insured
- Professional indemnity and public liability
- Call
- 07833 053749
- Last updated
- 27 October 2026
Tips that help
Most of what helps is simple and safe from ground level. A few suggestions:
- Don’t leave water getting in
- Keep foot traffic on flat roofs to a minimum
- Do not keep patching the same spot
- Record dates and spots where water appears
If we think the leak isn’t coming through the membrane, the report says so, with a suggestion of what to check next.
Check contractors protect the waterproofing when fitting equipment. Have the roof looked at after other work.
Places near New Malden
More services for New Malden
How we price electronic leak detection
Prices vary from roof to roof, for these reasons:
- The roof’s overall size
- Features like valleys, chimneys, dormers and parapets
- Whether thermal imaging or a drone is needed
- House, block, shop or office
All our prices include VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. You will know the exact price before you book.
Getting in touch
There’s no need for technical words. It is enough to let us know:
- Any marks or damp showing indoors
- Photos of the roof, taken safely from the ground or a window
- The property’s address and postcode
- Anything about access we should know
We confirm the exact price before booking, so you know the cost up front. Electronic leak detection is quoted for your roof, because the method depends on the roof. To book, phone 07833 053749 or send us an email.
What you can safely check yourself
After heavy rain, check ceilings and the tops of walls for new stains. Take a photo and write down when you saw it, as it helps a surveyor trace the cause.
Watch the gutters in a downpour, from a window or the ground. Water spilling over the edge can point to a blockage or a sagging run.
Signs you need electronic leak detection in New Malden
Joints and laps in a membrane can fail over time. Small openings at laps can leak long before anyone notices.
Look out for signs like these:
- Leaks showing away from the breach
- Leaks through a flat roof with no obvious cause
- Damage from equipment installers
- Failed seams and laps
Shop and office owners around Bentall Centre may find that flat roofs over shops and units are easy to forget until water comes through a ceiling.
Choosing a roof surveyor
- What the survey will not cover
- Which parts of the roof they’ll actually see
- What experience they bring
- Their report turnaround times
Local flat roofs in New Malden
Outer London has plenty of Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, frequently with hipped roofs in clay or concrete tiles. If your home in New Malden is one of them, bay roofs, hips and later dormers each have their own details. Mixed in with those pitched roofs are a good many flat ones, over rear extensions, dormers, garages and shops. With Southside House about 1.6 miles north-east, New Malden sits in an area with a long building history. Older homes in the wider area frequently have features worth a closer look, like lead valleys, tall stacks and roofs that have been patched over the years, and any change of roofing material on a listed home needs checking with the council first.
For site and facilities teams at buildings such as Christ Church New Malden CofE Primary School, ponding and blocked outlets on a wide flat roof are worth catching before the next wet season. Parking in New Malden, as in most of London, takes a little planning: tell us about permits, visitor bays or off-street space when you book, as a space near the door cannot be promised.
New Malden is about 3 miles south-west of Wimbledon, in Greater London. If you’re in New Malden, booking works exactly as it does anywhere else: get in touch, agree the price and pick a day. Our Greater London coverage includes New Malden and the places around it. There is also a page for London.
Postcode districts we cover here for electronic leak detection: KT3, KT1 and SW20. Local streets include High Street, Ashcombe Square and Melrose Gardens. New Malden is on the B283, which makes it simple to reach. We also cover the places around New Malden: Motspur Park (1 mile north-east), West Barnes (1 mile east), Norbiton (1 mile north-west), Coombe (1 mile north) and Raynes Park (1 mile east). We also work in nearby towns such as London (10 miles north-east), City of Westminster (9 miles north-east), Marylebone (9 miles north-east), Kensington (7 miles north), St Pancras (11 miles north-east) and Shoreditch (12 miles north-east).
Landmarks near New Malden
We work in homes and buildings around Beverley Park, The Glasshouse pub and Holy Cross School, among other places. There’s a railway station in New Malden itself: New Malden station. Other landmarks nearby include Chessington Castle Hill (3.3 miles south) and Bentall Centre (1.9 miles west). Open spaces near New Malden include Rose Walk and Kingston Hill Road area.
How the survey changes by roof type
Liquid-applied waterproofing
Small holes in liquid waterproofing may leak. ELD can help locate them on suitable roofs.
Green and ballasted roofs
Some layers may need lifting for testing. We discuss this before quoting.
The survey, step by step
We don’t take risks to get a closer look. Everything that can safely be seen is inspected, and anything we can’t see is noted in the report. The survey usually takes longer on a large roof than a small one, with the construction of the roof playing a part too. For a visit in New Malden, parking and access are the things to plan: let us know about parking, the floor the property is on, any shared entrance and loft access. We then look at everything that’s safely in view from ground level, windows, the loft and, where it is safe, the roof itself.
- We agree the area to be tested.
- The surface is prepared for the chosen method.
- Testing runs across the agreed area.
- Each breach found is located and recorded.
- The report is sent for your roofer to act on.
Before the survey
- Jot down any questions you want answered
- Check the loft hatch can be reached
- Gather any invoices or paperwork from past roof work
How to book
Buyers should book once an offer has been accepted, so you have the findings in time to act on them before you exchange. Otherwise, simply ring 07833 053749 or email us whenever suits you.