Surrey · London and the South East
The Chart Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes for The Chart, from an experienced roof surveyor. You get a clear written report with photographs.
- Leaks at pipes, outlets or fixings
- Leaks showing away from the breach
- Repairs that haven’t stopped the leak
Electronic leak detection for homes and businesses in The Chart
Our ELD report shows where each breach was found with photos. Your roofer can then repair those points instead of hunting for the leak. We don’t estimate repair costs; that is for your roofer to price. A retest after repairs can check the work if the build-up allows. You get a written report with photos. If you’ve noticed breaches around outlets and penetrations and leaks that return after repairs, we can find out what’s behind it.
In a small place like The Chart, a flat roof can stand in the open, so edges, upstands and laps take a beating. Felt roofs, which often last around 15–20 years, normally show it first. EPDM rubber and GRP coverings last longer, but their edges and joints still need checking. On an exposed roof, the edges tend to go first.
The report works through the roof section by section, from the main slopes down to the gutters and outlets. It records what’s sound as well as what isn’t.
- Where
- The Chart (RH8)
- Wider area
- Surrey
- Prices
- Quoted for your roof
- Reports
- A written report with photos, by email
- Survey days
- Monday to Sunday, daytime
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
What you can safely check yourself
What you cannot do safely is get up close. Slates, tiles, flat roofs and rooflights can give way, and a fall can be serious. That’s where a survey comes in, using safe viewpoints and a drone where applicable.
During heavy rain, look at the gutters from the ground or a window. Overflowing water can point to a blockage or a sagging run.
What electronic leak detection looks like in The Chart
Historic houses like Chartwell, about 1.9 miles east, show how far back building in the area around The Chart goes. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and any change of roofing material on a listed home needs checking with the council first. Many older homes in Surrey have handmade clay tiles and tile-hung upper walls. A few of Surrey’s oldest buildings have heavy Horsham stone slab roofs. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises.
Anyone responsible for a site like Limpsfield CofE Infant School will know that large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly. The streets around a church like St Andrew's are frequently among the oldest in a place, and if yours is one of the older homes nearby, the flat roofs on later extensions tend to wear out long before the main roof.
The Chart is about 6 miles south-east of Caterham, in Surrey. Bookings from The Chart are handled just like any other: get in touch, agree the price and pick a day. We cover towns and villages across Surrey, from the larger towns to small villages. There is also a page for Crawley.
Every address in RH8 is covered for electronic leak detection, from the main roads to the quietest streets. We cover properties on Stoneleigh Road, St Andrews Way and Ridlands Lane and the roads around them. We also cover the places around The Chart: Pains-Hill (1 mile west), Moorhouse Bank (1 mile north-east), Goodley Stock (1 mile east), Limpsfield (1 mile north-west) and Crockham Hill (1 mile south-east). Within a short drive, we also cover Epsom (15 miles north-west), Horley (10 miles south-west), Redhill (9 miles west), Ewell (15 miles north-west), Reigate (10 miles west) and Caterham (6 miles north-west).
Near you in The Chart
Around The Chart, our work takes us to homes and buildings near Carpenters Arms, Oxted School and Hazelwood School. The nearest railway station is Hurst Green station, about 1.6 miles west. A little further out are Tandridge Priory (0.6 miles north-west). The countryside around The Chart includes Botley Hill and Bay Pond.
Nearby places to The Chart
More services for The Chart
How the survey works
Once we’ve finished looking, we write up our findings in a report with photographs, emailed to you. On timing, most surveys take a length of time set by the size of the roof and how it’s built, and we’ll give you a guide when quoting. In a hamlet or village like The Chart, a postcode doesn’t always lead to the right gate, so a few directions are welcome. The visit itself is the same as anywhere else.
- We agree the area to be tested.
- We get the roof ready for testing.
- Testing runs across the agreed area.
- We mark the breach locations in our records.
- You receive the results to pass to your roofer.
Preparing for the visit
- Point out any leaks or damp patches
- If you are buying, check with the agent that we can get in
- Leave side gates unlocked
Arrange a survey
To arrange a survey, call 07833 053749 or drop us an email and tell us the address and what’s prompted the survey. You will know the price before anything is booked.
Advice
What we’re asked to look at in The Chart
Roofs covered with paving, ballast or planting hide the membrane. ELD can work on some covered roofs, depending on the build-up.
A survey makes sense if you’ve noticed:
- New membranes needing a check before handover
- Stains far from any visible defect
- Leaks that return after repairs
- Holes left by work on the roof
If you own a rental within reach of Hurst Green station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Before you book anyone
- Their track record with similar roofs
- Whether any drone flown is registered with the CAA
- Whether VAT is in the quoted price
- When you will get the report
Your questions about electronic leak detection in The Chart
How do I find out if my home in The Chart is listed?
For listing, use Historic England’s list; for conservation areas, ask the council. It matters most if you are planning to re-roof in a different material.
Will you come out to The Chart?
Yes, The Chart is on our map. A small place gets exactly the same survey as a big one, with the route planned beforehand.
When does the report arrive?
The Premium Survey report comes the same day, the Standard within 24–48 hours and the Basic within 48 hours. All of them come by email, ready to forward.
Do you carry out surveys on Saturdays and Sundays?
Surveys can be booked for any day of the week: Monday to Friday, Saturdays and Sundays. Tell us which days suit you when booking.
Can you inspect my roof with a drone?
Where it helps and the rules allow, yes. Our sub-250g drone is flown by a CAA-registered operator with a Flyer ID and Operator ID, and every flight depends on the airspace and the weather.
Can you survey in bad weather?
Light rain does not typically stop a survey, and it can even help show where water is getting in. Strong wind or heavy rain can stop drone flights and make roof access unsafe, so if conditions are not right we’ll arrange another day with you.
Does ELD work under paving or planting?
Sometimes. The layers on top and the build-up below decide it, and some may need lifting. We talk this through first.
For landlords and managing agents
With a portfolio of properties, surveys can be booked for more than one address. To arrange surveys for several addresses, phone 07833 053749 or email us.
Letting agents frequently book on a landlord’s behalf. We agree a time with the tenant beforehand.
Leave it or get it looked at?
Repeated call-outs for the same leak add up. A clear record of where the breaches are helps break that cycle. Older cottages and farmhouses around The Chart can have roof timbers that have been there a very long time, where water from a failed roof can cause rot if it’s left.
The cost of a survey depends on the roof: its size, its height, how many sections it has and how it can be reached and seen safely. We quote electronic leak detection for each roof, as the method and time depend on the roof.
Why us?
- Professional indemnity and public liability insurance
- Thermal imaging and drones used where they help
- We hold a CAA Flyer ID and Operator ID
- Independent findings on the roof’s condition
See what a roof survey costs and our case studies.
Honest limits
To be straight with you, a roof survey has limits:
- Water entering through details rather than the membrane
- Areas we can’t reach or that can’t be tested
- Carrying out the repair work
If you are not sure which survey you need, call 07833 053749 or send us an email and we’ll give you a straight answer before booking. The full list of what we check.
What this survey covers
- Roof terraces and balconies
- Flat roof membranes
- Green roofs
- Liquid-applied waterproofing
- Single-ply roofs
- Commercial flat roofs