Greater London · London and the South East
Crooked Billet Electronic Leak Detection
Find out the condition of the flat roof membrane at your property in Crooked Billet. Visits run on weekdays and weekends, in the daytime.
- Holes around roof penetrations
- A flat roof leak that cannot be traced
- Stains far from any visible defect
Electronic leak detection in Crooked Billet: what you get
Electronic testing locates holes in the waterproofing, not every cause of water getting in. Water coming through walls, copings, rooflights or plumbing will not show on the test. We will tell you if we think the leak is coming from somewhere else. It won’t 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 survey flat roof membranes, liquid-applied waterproofing and green roofs, and common reasons people get in touch are leaks that return after repairs and a flat roof leak that can’t be traced.
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 Crooked Billet, as anywhere in London, the right approach depends on what the roof is made of. Many older flat roofs are felt or asphalt, and many newer ones EPDM rubber or GRP.
The report records the flat roof membrane as we found it on the day. That makes it useful now and a handy reference later, like when you want to compare after future work.
- Location
- Crooked Billet (SW19, SW20)
- Region
- Greater London
- Prices
- Quoted for your roof
- Report
- A written report with photos, by email
- Survey days
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Flat roofs in Crooked Billet
About 0.5 miles south-west lies Southside House, a reminder of how long the area around Crooked Billet has been built on. 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 the council can say whether a home is in a conservation area. Alongside Victorian and Edwardian terraces, outer London has a great many interwar semis, often with hipped roofs of clay or concrete tiles. If your home in Crooked Billet 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.
For landlords with property near Raynes Park station, a flat roof over a rented flat is easy to forget until the tenant reports a leak. If you live in an older home near Christ Church, the flat roofs on later extensions tend to wear out long before the main roof.
Crooked Billet is about 1 mile west of Wimbledon, in Greater London. We provide electronic leak detection for homeowners, landlords and businesses in Crooked Billet. Our Greater London coverage includes Crooked Billet. We also survey roofs in London.
All of SW19 and SW20 is covered for electronic leak detection, from the main roads to the quietest streets. If you need electronic leak detection at a property on Camp Road, Mckay Road and Pepys Road or anywhere close by, we can help. Neighbouring places we cover for electronic leak detection include Copse Hill (1 mile south-west), Wimbledon (1 mile east), Bushey Mead (1 mile south), Wimbledon Chase (1 mile south-east) and Kingston Vale (1 mile north-west). Further out, we also cover London (8 miles north-east), City of Westminster (7 miles north-east), Marylebone (8 miles north-east), Kensington (6 miles north), St Pancras (9 miles north-east) and Shoreditch (10 miles north-east).
Near you in Crooked Billet
Around Crooked Billet, our work takes us to homes and buildings near Hollymount School, Cannizaro Park and Ursuline Preparatory School and the streets around them. The nearest railway station is Raynes Park station, roughly 0.9 miles south. Other landmarks nearby include Southside Wandsworth (2.7 miles north-east) and Wimbledon Museum (0.5 miles east). Green spaces nearby include Kew Gardens Lake and Henman Hill.
Should I look at the roof myself first?
It’s useful to keep a record: dates of leaks, photos from the ground and any work done on the roof. Send it with your enquiry and it will help the survey.
After heavy rain, check ceilings and the tops of walls for new stains. Photograph them and note the date, which helps when we look at the roof.
What we are asked to look at in Crooked Billet
Repeated leaks after repairs suggest the real breach hasn’t been found. Electronic testing helps pinpoint it.
Typical things we are asked to look at include:
- A flat roof leak that cannot be traced
- Repairs that haven’t stopped the leak
- Holes around roof penetrations
- New roofs to check before paving or planting
Controlled parking zones are common in London, so mention any permit rules for Crooked Billet, along with any off-street space.
Choosing a roof surveyor
- When you will get the report
- What follow-up you get after the report
- Whether you get a written report with photos
- Whether the price includes VAT
Why get it checked now?
Some breaches are too small to see. Electronic testing can find breaches you can’t see by eye where the roof suits it. In a London terrace or conversion, a roof defect rarely stays your problem alone: a blocked parapet gutter or slipped slate can let water into the flat below or the house next door. Finding it early keeps the work smaller.
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. You will know the price for the job before you book.
Why us?
- Photographs and a written report every time
- 98% customer satisfaction
- An independent look at the roof
- Drone and thermal imaging surveys available
Take a look at our cost guide or what we found on two real jobs.
Crooked Billet: your questions answered
How do I find out if my home in Crooked Billet is listed?
Your council is the best source, with Historic England’s list for listed buildings. A change of roofing material may need consent in either case, and councils can also use Article 4 directions.
Is parking a problem for a survey in Crooked Billet?
Typically it’s manageable with a little notice. Tell us what parking is available nearby, and the visit is planned around it.
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.
What’s the best way to book?
The quickest way is to phone 07833 053749 or send us an email. Give us the address and some details about the roof. We survey seven days a week.
Will you walk on the roof?
Not unless it is safe. Most of what we need can be seen from safe viewpoints, the loft and, where applicable, a drone, and the report notes anything we couldn’t see.
What’s in the report?
It sets out what we found, why it matters and what we recommend, backed by photos. It also says if any part of the roof couldn’t be seen safely, so you know exactly what was covered.
Is my roof suitable for ELD?
That depends on the roof’s membrane and layers. Let us know what you know about the roof and we’ll confirm suitability.
Also near Crooked Billet
Also in Crooked Billet
How we price electronic leak detection
Not every roof costs the same to survey, for these reasons:
- Any need for thermal images or a drone flight
- Features like valleys, chimneys, dormers and parapets
- The roof’s overall size
- Extensions, dormers and garages with roofs of their own
For a price for your roof in Crooked Billet, phone 07833 053749 or send us an email with the address and some details. The price is agreed before a date is set.
Helping us price your survey
Some details help us point you to the right survey and price. When you contact us, tell us:
- Access details, such as a loft hatch or a shared roof
- The kind of building and roof involved
- Any stains, drips or damp patches you’ve seen indoors
- Where the property is, with the postcode
We confirm the price for your roof before you book, so you know the cost up front. Electronic leak detection is quoted for your roof, because the method depends on the roof. To book, ring 07833 053749 or email us.
What happens on the day
Every roof is different, but as a rough guide the survey takes longer on a large roof than a small one, with the construction of the roof playing a part too. You are welcome to ask questions while we are there. From the street, a London terrace typically shows only its front slope or parapet, so in Crooked Billet we work round the house, using the street, the windows, the loft and any safe vantage point behind it. If other people live in the building, let us know who can let us into the shared parts.
- First, you tell us about the roof build-up and where water is showing.
- We check that the membrane and build-up suit electronic leak detection.
- The testing method is chosen to suit the membrane and build-up.
- Testing runs across the roof to locate breaches in the membrane.
- You get a report showing where each breach is, for your roofer to repair.
Before the survey
- Point out any leaks or damp patches
- Have keys ready for side gates, garages or roof access doors
- If you are buying, check with the agent that we can get in
Booking a survey
For a price for electronic leak detection in Crooked Billet, call 07833 053749 or email us. A few details about the property and the roof help us price the survey accurately.
Related advice
For landlords and managing agents
Surveys can also be booked by buyers’ agents acting for a client. Reports are emailed, so they’re easy to pass on.
Landlords and agents in Crooked Billet book surveys as well as householders. A written report with photos gives you a clear record of the flat roof membrane, which helps you plan work between tenancies.