Kent · London and the South East
Sevenoaks Electronic Leak Detection
Find out the condition of the flat roof membrane at your property in Sevenoaks. Visits run on weekdays and weekends, in the daytime.
- Water coming in under a flat roof
- Gaps at membrane joints
- Punctures from foot traffic or tools
Electronic leak detection in Sevenoaks: what you get
Green roofs, ballasted roofs and roofs under paving are harder to test. The layers on top can limit the methods we can use, and some may need lifting. We talk this through before we quote. Any details of the build-up help because they show what’s under the surface. We will tell you if the roof cannot be tested. We’re often asked to look into leaks under green or ballasted roofs and water coming in under a flat roof, on flat roof membranes, liquid-applied waterproofing and commercial flat roofs.
Garages and porches on estates in towns like Sevenoaks often have flat roofs. Some older garages have cement sheet roofs, which on buildings from before 2000 may contain asbestos, which a specialist asbestos surveyor should check before anyone disturbs them. Felt, rubber and fibreglass coverings each need a different approach. Asbestos testing is not part of what we do, though a report may flag materials that could contain it.
Most points in the report come with a picture, because a photo of a cracked flashing says more than a paragraph. If something couldn’t be seen safely, the report is clear about it.
- Where
- Sevenoaks (TN13, TN14, TN15, TN8)
- Region
- Kent
- Cost
- Quoted for your roof
- Report
- A written report with photos, by email
- Appointments
- Weekdays and weekends
- Insured
- Professional indemnity and public liability
- Call
- 07833 053749
- Last updated
- 27 October 2026
How the survey changes by roof type
Liquid-applied waterproofing
Liquid waterproofing has no laps, but can still have thin spots or holes. Whether ELD works depends on the coating and build-up.
Inverted and paved roofs
A terrace or paved roof hides the waterproofing. Whether it can be tested depends on the build-up.
Also near Sevenoaks
More services for Sevenoaks
Landlord and commercial surveys in Sevenoaks
If the property is let, the agent or a tenant can let us in. We survey on weekdays, Saturdays and Sundays, which can make access easier.
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. Recommendations are set out by urgency where it matters, which helps when budgeting.
Electronic leak detection in Sevenoaks: local notes
With Knole House about 1.3 miles south-east, Sevenoaks 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. Handmade clay tiles, including Kent peg tiles hung on pegs through two holes, are typical of older Kent buildings. Kent’s older buildings take in oast houses and timber-framed Wealden hall houses as well. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
For site and facilities teams at buildings such as Sevenoaks Primary School, schools and public buildings frequently have big flat roofs, and their outlets and upstands need regular checks. For an older house near a landmark such as St John the Baptist, later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear.
Sevenoaks is about 19 miles south-east of London, in Kent. Wherever you are in Sevenoaks, we can carry out electronic leak detection at your property. Our Kent coverage includes Sevenoaks. Our Maidstone page covers surveys nearby.
Here we cover the TN13, TN14, TN15 and TN8 postcode area for electronic leak detection. Whether your property is on London Road, High Street and Church Road or anywhere close by, we can survey it. Sevenoaks sits on or near the A21 and A25, which makes travel easy. Neighbouring places we cover for electronic leak detection include Riverhead (1 mile west), Kippington (1 mile south), Dunton Green (1 mile north-west), Bessels Green (1 mile west) and Chipstead (2 miles west). Further out, we also cover Maidstone (15 miles east), Dartford (11 miles north), Royal Tunbridge Wells (11 miles south), Gravesend (13 miles north-east), Tonbridge (7 miles south-east) and Northfleet (13 miles north-east). Being one of Kent’s larger places, Sevenoaks has every kind of building, from houses and flats to offices.
Around Sevenoaks
Around Sevenoaks, our work takes us to homes and buildings near The Rifleman pub, New Beacon School and Knole Academy. There is a railway station in Sevenoaks itself: Sevenoaks station. A little further out are Sevenoaks Hospital (0.6 miles north-east) and Kemsing Castle Bank (2.6 miles north-east). Not far away are Dryhill Nature Reserve.
When to book a survey in Sevenoaks
Flat roof membranes can be punctured by foot traffic, dropped tools or debris. Many are tiny but water still finds them.
We’re frequently asked to look at:
- Leaks that return after repairs
- Leaks at pipes, outlets or fixings
- Punctures from foot traffic or tools
- Leaks under green or ballasted roofs
If you own a rental within reach of Sevenoaks station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Choosing a roof surveyor
- Their drone registration, if they fly one
- Which limits apply to the survey
- Their insurance cover
- Is there a chance to talk the report through?
What we do, step by step
After the inspection, everything we found is written up in a report with photographs, sent to you by email. On timing, most surveys take more time on a big roof than a small one, and the build-up of the roof makes a difference too. For a home in Sevenoaks, the main things we need are a way into the loft, a route to the back garden and somewhere to park. If you won’t be there yourself, let us know who will let us in.
- You let us know about the roof and where water is showing.
- The roof is assessed for suitability first.
- The test method is chosen to suit the roof.
- We test the roof and locate any breaches.
- You get a report with photos of each breach.
Getting ready for the survey
- For flats, make sure roof access has been agreed
- Have any paperwork from past roof work to hand
- Let us know where we can park nearby
Getting a price
If you have photos of the roof, send them over. Take them safely from ground level or a window, and please do not climb up for a closer look. To send them or to book, ring 07833 053749 or drop us an email.
Read more
What electronic leak detection doesn’t cover
It is a careful look at the flat roof membrane, not the whole story. The main limits are:
- Some conductive membranes
- Moisture spread under the membrane
- Water entering through details rather than the membrane
If you’re not sure which survey you need, ring 07833 053749 or email us and we will give you a straight answer. What a survey covers and doesn’t.
Roof types and parts we check
- Flat roof membranes
- Single-ply roofs
- Liquid-applied waterproofing
- Roof terraces and balconies
- Green roofs
- Commercial flat roofs
Sevenoaks: your questions answered
Do you carry out roof surveys in Sevenoaks?
We do. The survey and report are the same in Sevenoaks as anywhere else.
Is there anything to prepare before you come to Sevenoaks?
Not much. Unlock side gates, keep pets in another room and dig out any invoices from past roof work.
What happens after the survey?
The report comes by email, and you decide the next step: raise it with a seller, send it to an insurer, brief a roofer or share it with a managing agent.
Which method do you use?
The roof decides the method. You’ll know which method we plan to use before we start.
Is my roof suitable for ELD?
ELD does not suit every roof. Some membranes conduct electricity and some roofs lack the layer the test needs. We’ll tell you if yours isn’t suitable before testing.
Can you test a green or ballasted roof?
In some cases. It depends on the build-up and the layers above the membrane and parts may need to be lifted. We talk this through first.
What does the report include?
It sets out what we found, why it matters and what we recommend, with photographs throughout. It also says if any part of the roof couldn’t be seen safely.
Why get it checked now?
Chasing a leak again and again is frustrating. A report showing the breach points gives your roofer a clear target. In a family home in Sevenoaks, a small roof fault lets water into places you cannot see, soaking loft insulation, wall tops and timbers. By the time it shows inside, the job has grown.
Bigger, taller and commercial roofs take more time to survey, so they’re priced to match. The price is confirmed before you book.
Why us?
- Insured for professional indemnity and public liability
- CAA-registered drone operator (Flyer ID and Operator ID)
- Thermal imaging and drone inspection where they help
- Every finding written up with photos