Kent · London and the South East
Electronic Leak Detection in Cotman's Ash
Electronic leak detection to pinpoint holes in flat roof membranes across Cotman's Ash, using drones and thermal imaging where applicable. Call or email for a price.
- A flat roof leak that cannot be traced
- Holes around roof penetrations
- Punctures from foot traffic or tools
Tips that help
Over many surveys, some simple habits stand out:
- Share any drawings of the roof
- Make sure trades protect the waterproofing
- Keep a note of leaks after rain
- Clear flat roof outlets regularly
File the report with your roof paperwork. It shows the condition of the membrane on that date.
Consider testing a new membrane before it’s covered. Finding breaches is simpler at that stage.
Electronic leak detection for homes and businesses in Cotman's Ash
Electronic leak detection, or ELD, finds holes in flat roof waterproofing membranes. It works with an electrical current that passes through the membrane only where there is a breach. It can find holes too small to spot by eye so your roofer knows exactly where to repair. The results come in a report with photos. If you’re worried about leaks that return after repairs and leaks under green or ballasted roofs, a survey will tell you what’s going on.
Some older homes in villages like Cotman's Ash are listed or in a conservation area, and that can affect how an extension roof or dormer is re-covered. If you’re planning work, check with the council first. Knowing the roof’s condition is the starting point. Listed building consent is needed for changes that affect a listed building’s special interest.
The report works through the roof section by section, from the coverings down to the gutters, each with a short note and a photo. You’ll see the good as well as the bad.
- Location
- Cotman's Ash (TN15)
- Region
- Kent
- Cost
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- When we survey
- Weekdays, Saturdays and Sundays
- Insurance
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
Towns and villages near Cotman's Ash
More services for Cotman's Ash
What this survey cannot tell you
We only report everything that’s safely in view on the day, so some things are outside what a survey can do:
- Carrying out the repair work
- Leaks from walls, copings or rooflights
- Build-ups without a suitable layer below
If in doubt, call 07833 053749 or send us an email and we will suggest the right survey. What a survey covers and does not.
Roofs we survey in Cotman's Ash
- Single-ply roofs
- Flat roof membranes
- Green roofs
- Liquid-applied waterproofing
- Commercial flat roofs
- Roof terraces and balconies
What affects the cost of electronic leak detection
Every roof is different, so prices are confirmed before you book. This is what makes a difference:
- The number of roofs, including extensions and garages
- How big the roof is
- Commercial roofs and larger buildings
- Building height and the viewpoints available
For a price for your roof in Cotman's Ash, call 07833 053749 or email us with the address and some details. The price is agreed before a date is set.
Booking your survey
When you call or email, these details help:
- What made you get in touch
- How the loft is reached, if there is one
- Pictures from the garden or a window, if you have them
- The kind of building and roof involved
Most bookings start with a short call: call 07833 053749 or send us an email, and we will ask about the building and what you need. You will have a price before anything is arranged.
Flat roofs in Cotman's Ash
With Lullingstone Castle about 3.4 miles north-west, Cotman's Ash sits in an area with a long building history. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and any change of roofing material on a listed home needs checking with the council first. Many older homes in Kent have handmade clay tiles, including Kent peg tiles held by pegs through two holes, and tile-hanging on their upper walls. You’ll also find oast houses and timber-framed Wealden hall houses among the county’s older buildings. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
For site and facilities teams at buildings like Kemsing Primary School, ponding and blocked outlets on a wide flat roof are worth catching before the next wet season. If you own a rental within reach of Kemsing station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies. The streets around a church such as Church of Saint Mary the Virgin are often among the oldest in a place, and if yours is one of the older homes nearby, the joins between later flat roofs and the old walls are where problems normally start.
Cotman's Ash is about 3 miles north-east of Sevenoaks, in Kent. Cotman's Ash gets the same service as everywhere else we work: a proper look at whatever is safely visible, photos and a clear written report. Across Kent, we cover Cotman's Ash and the places around it. Maidstone is in our area too.
Electronic leak detection in TN15 are booked the same way as anywhere else. We also cover the places around Cotman's Ash: Woodlands (1 mile north-east), Heaverham (1 mile south-east), Knatts Valley (1 mile north), Romney Street (1 mile north-west) and Kemsing (1 mile south-west). Larger places within reach include Maidstone (13 miles east), Dartford (9 miles north), Sevenoaks (3 miles south-west), Royal Tunbridge Wells (13 miles south), Gravesend (10 miles north-east) and Tonbridge (8 miles south).
What’s near Cotman's Ash
Locally, jobs take us to homes and businesses close to The Rising Sun pub and Kemsing Down, among other places. For rail, the closest station is Kemsing station, roughly 1.4 miles south of the centre. Nearby you will also find Kemsing Castle Bank (0.9 miles south-west) and Sevenoaks Hospital (2.8 miles south-west). Open spaces near Cotman's Ash include Dryhill Nature Reserve.
Should I look at the roof myself first?
A lot can be seen from the ground. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Please don’t climb up for a closer look.
It’s useful to keep a record: when leaks happen, ground-level photos and any past roof work. Send it with your enquiry.
Why it is worth a survey now in Cotman's Ash
Not every leak is in the membrane. Testing shows whether the membrane is breached so attention can go to the right place. Around Cotman's Ash, older homes often have old roof timbers, where water from a failed roof can cause rot if it’s left.
The cost of a survey depends on the roof: how big it is, how high it is, the number of separate roofs and how it can be reached and seen safely. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Why book with us
- Surveys seven days a week
- 98% customer satisfaction
- Drone and thermal imaging surveys available
- 5,000+ roofs surveyed
Read our cost guide or our case studies.
FAQs for Cotman's Ash
Do you cover Cotman's Ash?
Yes, Cotman's Ash is within the area we cover. We work right across London and South East England. Just call 07833 053749 or email us and let us know about the property.
Is Cotman's Ash within the area you cover?
Yes. Cotman's Ash is within the area we cover, which takes in towns, villages and rural addresses. Our area covers London and the South East. Just mention lanes, gates or anything else about the route as you book.
How experienced are you?
Over 5,000 surveys so far, across 20+ years of surveying roofs, with 98% customer satisfaction.
What happens next?
You receive the written report by email, with photographs and recommendations. It is yours to share with a seller, insurer, roofer or managing agent, whichever applies.
Will you repair the leak?
No, the test finds the breaches and your roofer repairs them. Your roofer uses the report to target the repair.
I live in a flat. Can you survey the roof?
Yes. Shared roofs just need a little more planning. Mention it when you contact us and we’ll plan the survey around it.
Do I need to be at home?
Not necessarily. If we only need the outside, we can agree that beforehand, but anything inside needs someone there to give access.
How it works
The visit has one job: to see as much of the flat roof membrane as can be seen safely and record it clearly. Everything we note and photograph goes into the written report. The visit normally takes a time that depends on the membrane area and the build-up, which we set out in the quote. Rural addresses near Cotman's Ash can be hard to find from a postcode alone, so a few directions are welcome. The visit itself is the same as anywhere else.
- We start by finding out what the roof is made of and where it leaks.
- We check that the membrane and build-up suit electronic leak detection.
- We pick the low-voltage or high-voltage method that suits the roof.
- Testing runs across the roof to locate breaches in the membrane.
- The breaches are recorded with photographs in a report for your roofer.
Getting ready for the survey
- Have any paperwork from past roof work to hand
- Keep pets in another room
- Tell us about any leaks, stains or damp patches you know of
Book a survey
Booking is simple: just call 07833 053749 or email us, let us know about the property and we’ll recommend the right survey. The price is agreed up front.