Greater London · London and the South East
Electronic leak detection in Raynes Park, Greater London
We take a careful look at the flat roof membrane at your property in Raynes Park, and put it all in a report with photos.
- Repairs that haven’t stopped the leak
- Leaks under green or ballasted roofs
- Holes left by work on the roof
The survey, step by step
Where it is relevant and can be reached safely, the roof space is checked as well as the outside. Inside, we look for staining, damp, gaps and signs of movement, as far as the space allows. All in, the survey typically takes as long as needed for the roof’s area and construction, and we’ll give you a guide when quoting. In converted houses and mansion blocks, the loft hatch is frequently on a shared landing. Where that’s the case, access needs agreeing with whoever controls that landing. Otherwise, the visit in Raynes Park runs like any other.
- You tell us about the roof and where water is showing.
- We check whether the membrane and build-up suit ELD.
- We choose a low-voltage or high-voltage method to match the roof.
- We test the roof and locate any breaches.
- A report with photos shows where each breach is.
Before we arrive
- Check the loft hatch can be reached
- Make sure pets are kept safely away
- Let us know where we can park nearby
Getting a price
Booking is simple: just ring 07833 053749 or email us and give us a few details about the property and we will explain which survey suits. The price is agreed up front.
Read more
Electronic leak detection in Raynes Park: what you get
ELD is a way of pinpointing breaches in a flat roof’s waterproofing membrane. It uses a small electrical current that passes through the membrane only where there’s a breach. It can find holes too small to spot by eye, so your roofer can repair them. The results come in a report with photos. We survey liquid-applied waterproofing, flat roof membranes and commercial flat roofs, and common reasons people get in touch are leaks through a flat roof with no obvious cause and gaps at membrane joints.
Offices, shops and blocks of flats across London often have large flat roofs with plant, rooflights and walkways. Each pipe, upstand and fixing through the covering is a possible weak point. In Raynes Park, roof access is agreed with the building manager or owner beforehand. Plant bases, rooflights and cable entries are all places where water can get in.
The report doesn’t just list problems. It explains what we found, why it matters and what we recommend.
- Location
- Raynes Park (SW20, KT3, SM4)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Report
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
Before and after the survey
Some practical points come up on survey after survey. They’re worth knowing whatever the roof:
- Note where leaks show inside and when
- Act on new leaks promptly
- Don’t keep patching the same spot
- Use boards when working on the roof
Once repairs are made, the roof can be tested again if you want to check them, where the roof still suits the method.
Consider testing a new membrane before it’s covered. Finding breaches is simpler at that stage.
What affects the price in Raynes Park
Every roof is different, so prices are confirmed before booking. These are the things that affect it:
- How complicated the roof is, with its valleys, chimneys and parapets
- House, block, shop or office
- Any need for thermal images or a drone flight
- Extra roofs, like extensions, dormers or garages
For a price for your roof in Raynes Park, call 07833 053749 or drop us an email and let us know about the roof. We will confirm the figure before booking.
Getting in touch
You do not need to know any roofing terms. It’s enough to let us know:
- What kind of property and roof it is
- What’s prompted the survey
- Photos of the roof, taken safely from the ground or a window
- The property’s address and postcode
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, call 07833 053749 or use the contact form.
Why get it checked now?
Cutting open a flat roof to find a leak can cause more damage. ELD aims to locate the breach first so your roofer knows where to work. A hidden valley or parapet gutter on a London house can hold water for weeks before anyone notices. When the stain finally shows, the damage underneath is frequently older than it looks.
What a survey costs comes down to the roof itself: how big it is, how high it is, the number of separate roofs and how safely it can be seen. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Why book with us
- A sub-250g drone, flown with a CAA Flyer ID and Operator ID
- Thermal imaging and drones used where they help
- More than 20 years surveying roofs
- An independent look at the roof
Read how roof surveys are priced and what we found on two real jobs.
Honest limits
It is a careful look at the flat roof membrane, not the whole story. Its limits include:
- Carrying out the repair work
- The extent of water in the insulation
- Leaks from walls, copings or rooflights
If in doubt, ring 07833 053749 or drop us an email and we will recommend the right survey before you book. What our survey covers.
What this survey covers
- Green roofs
- Liquid-applied waterproofing
- Single-ply roofs
- Commercial flat roofs
- Flat roof membranes
- Roof terraces and balconies
What we look for on each type of roof
EPDM rubber roofs
Whether an EPDM roof can be tested depends on the membrane and build-up. We check before we quote.
Green and ballasted roofs
Parts of the covering may have to come up. We explain what’s needed when we quote.
Common questions in Raynes Park
Does a conservation area affect roof work in Raynes Park?
We can’t confirm that for you, but Historic England’s list and your council can. Both listing and conservation areas can limit changes of roofing material, and councils can also use Article 4 directions.
Do you cover Raynes Park?
Yes. We cover the whole of London and South East England, and Raynes Park is part of that. You can phone 07833 053749 or send us an email with the address and a few details.
Do you look in the roof space?
Yes, where the survey calls for it and there is safe access. Inside, we look for damp, staining, gaps and sagging, as far as the space allows.
Do I need to be at home?
Not always. An outside-only look can be arranged beforehand, but the loft and any rooms with damp need someone to let us in.
How much time does ELD need?
The roof’s size and build-up decide how long it takes. You will know roughly how long before we start.
Will you walk on the roof?
Only when it’s safe. Safety comes first, and fragile or steep roofs cannot always be walked on. Safe viewpoints, the loft and a drone where it applies let us see the rest.
Can you survey a shared roof?
Yes, as long as access is agreed. Roofs over flats are often shared, so we need permission from the freeholder or managing agent. We inspect only the parts we’re allowed to reach.
Local flat roofs in Raynes Park
The wider area around Raynes Park has a long history of building, with Southside House about 0.9 miles north. Older homes in the wider area often have features worth a closer look, such as 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. 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. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Next to the main roofs there is typically a flat roof somewhere, whether on an extension, a garage or a commercial unit.
If you run a business near Bentall Centre, outlets and upstands on commercial flat roofs are the places to check before trouble starts. Controlled parking zones are common in London, so mention any permit rules for Raynes Park, along with any off-street space. Anyone responsible for a site like West Wimbledon Primary School will know that large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Raynes Park is about 2 miles south-west of Wimbledon, in Greater London. From houses to flats and shops in Raynes Park, the roof can be surveyed. Across Greater London, we cover Raynes Park. London is in our area too.
Here we cover the SW20, KT3 and SM4 postcode area for electronic leak detection. You will find streets such as Gore Road, Edna Road and Wyke Road. Raynes Park is on the A238 and A298, so it is easy for us to get to. Neighbouring places we cover for electronic leak detection include West Barnes (1 mile south-west), Bushey Mead (1 mile north-east), Cannon Hill (1 mile east), Motspur Park (1 mile north-west) and Wimbledon Chase (1 mile north-east). We also work in nearby towns such as London (9 miles north-east), City of Westminster (8 miles north-east), Marylebone (9 miles north-east), Kensington (7 miles north), St Pancras (10 miles north-east) and Shoreditch (11 miles north-east).
Landmarks near Raynes Park
In Raynes Park, that means homes and buildings near Raynes Park High School, The Raynes Park Tavern and Cannon Hill Common and the streets around them. There is a railway station in Raynes Park itself: Raynes Park station. A little further out are Wimbledon Museum (1.5 miles north-east) and Atkinson Morley Hospital (1 mile north). Open spaces near Raynes Park include Henman Hill and Derwent Floodwash.