Kent · London and the South East
Electronic leak detection in Thong, Kent
Electronic leak detection to pinpoint holes in flat roof membranes in Thong, using drones and thermal imaging where it applies. Call or email for a price.
- Damage from equipment installers
- Leaks at pipes, outlets or fixings
- Leaking laps in the waterproofing
Electronic leak detection in Thong
We carry out electronic leak detection on flat roofs in Thong and across London and South East England. A visit normally takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. We quote electronic leak detection for each roof, as the method and time depend on the roof. You get a written report with photos. Typical surveys look at damp inside with no sign on the roof and leaks under green or ballasted roofs, on single-ply roofs, commercial flat roofs and flat roof membranes.
Flat roofs on exposed homes in small places like Thong take more wind and rain, so edges, upstands and laps take a beating. Felt roofs, which frequently last around 15–20 years, typically show it first. Rubber and GRP last longer, though trims and joints still need a look. Exposed edges are usually the first part of a flat roof to go.
We keep jargon out of it: where something needs attention, it says so plainly, along with how urgent it is.
- Place
- Thong (DA12)
- Region
- Kent
- Cost
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- When we survey
- Weekdays and weekends
- Insured
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Flat and commercial roofs around Thong
The coast is about 4 miles or less from Thong, so there’s more wind and more salt in the air than further inland. Wind can catch loose edges and trims on a flat roof, and salt air is hard on metal trims, flashings and fixings. 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. The county’s older buildings also include oast houses and timber-framed Wealden hall houses. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
For an older house near a landmark such as Church of St Peter and St Paul, flat-roofed rear additions and dormers added over the years are worth checking. Landlords with a home close to Sole Street station may find that flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Thong is about 2 miles south-east of Gravesend, in Kent. Roofs in Thong get the same thorough look as anywhere else in Kent. Thong is one of the towns and villages in Kent we cover for electronic leak detection. Maidstone is in our area too.
All of DA12 is covered for electronic leak detection, from the main roads to the quietest streets. Other places close to Thong include Upper Ifield (1 mile east), Shorne Ridgeway (1 mile east), Shorne (1 mile east), Chalk (1 mile north) and Higham (2 miles east). Within a short drive, we also cover Maidstone (11 miles south-east), Sittingbourne (15 miles east), Dartford (8 miles west), Sevenoaks (13 miles south-west), Northfleet (3 miles north-west) and Swanley (10 miles west).
What’s near Thong
We work in homes and buildings around Shorne Woods Country Park and Thamesview School and the streets around them. The nearest railway station is Sole Street station, roughly 2.2 miles south-west of the centre. Nearby you will also find Rochester Castle (4.5 miles east) and Gravesham Museum (2.6 miles north-west). Green spaces nearby include Rede Common and Gad's Hill.
When you need someone else
A survey is a proper look at the flat roof membrane, but it can’t do everything. The main limits are:
- Moisture spread under the membrane
- Some conductive membranes
- Fixing the holes we find
If in doubt, ring 07833 053749 or email us and we’ll suggest the right survey before you book. The full list of what we check.
Roofs we survey in Thong
- Flat roof membranes
- Roof terraces and balconies
- Commercial flat roofs
- Green roofs
- Liquid-applied waterproofing
- Single-ply roofs
Your questions about electronic leak detection in Thong
How do I find out if my home in Thong is listed?
We can’t confirm that for you, but Historic England’s list and your council can. A change of roofing material may need consent in either case.
Do you cover smaller places like Thong?
We do. A small place gets exactly the same survey as a big one, with the route planned beforehand.
Can you give me structural calculations?
No. Visible signs such as deflection or sagging are recorded, but we don’t provide calculations or an engineer’s opinion. The report will say if you need an engineer.
Can you survey at the weekend?
We survey on any day from Monday to Sunday, during the day. Let us know your preferred days as you book.
Is my roof suitable for ELD?
ELD does not suit every roof. Some membranes conduct electricity, and some build-ups lack a suitable layer below. We’ll tell you if yours is not suitable at the start.
Which method do you use?
We choose the method that suits the roof. We’ll explain why when we quote.
I live in a flat. Can you survey the roof?
Yes, once whoever controls the roof agrees access. On a shared roof we can only inspect the parts we are allowed to reach, and the report makes that clear.
How it works
The visit typically starts outside and finishes in the loft: first the slopes, edges and gutters from every safe viewpoint, then the roof space where it can be reached. In total, it takes a length of time set by the size of the roof and how it’s built, which we’ll explain when we quote. Rural addresses near Thong can be hard to find from a postcode alone, so a few directions, or a note of a nearby landmark, help us arrive on time. After that, the survey runs as it would anywhere.
- First, you let us know about the roof build-up and where water is showing.
- We confirm whether the roof is suitable for electronic testing.
- The testing method is chosen to suit the membrane and build-up.
- The roof is tested and any breaches are located.
- The breaches are recorded with photos in a report for your roofer.
Before the survey
- Clear the way to the loft hatch
- Make a note of anything you’d like us to look at
- Mention any parking restrictions on your street
Booking a survey
Our phone lines are open seven days a week. For a price or to book, call 07833 053749 or email us.
Advice
When to book a survey in Thong
New membranes can have defects from installation. Testing before the roof is covered or handed over helps find them.
Common reasons to book include:
- Patched roofs that still leak
- A flat roof leak that cannot be traced
- Holes around roof penetrations
- Breaches hidden under paving or planting
For site and facilities teams at buildings like Riverview Infant School, schools and public buildings frequently have big flat roofs, and their outlets and upstands need regular checks.
Choosing a roof surveyor
- Whether you get a written report with photos
- What they won’t be able to tell you
- Will they check the loft as well as the outside?
- Do they have a CAA Flyer ID and Operator ID for drone work?
Roof by roof
Single-ply membranes
Many offices and units have single-ply roofs. Seams and penetrations are typical breach points.
EPDM rubber roofs
EPDM rubber roofs often last 30–50 years, but punctures and seam failures still happen.
Places near Thong
Also in Thong
Before and after the survey
These tips come from what we see on roofs every week, before and after a survey:
- Don’t keep patching the same spot
- Act on new leaks promptly
- Clear flat roof outlets regularly
- Ask contractors to protect the membrane
Once repairs are made, the roof can be tested again if you want to check them if the build-up allows.
Limit foot traffic on flat roofs. Many breaches come from foot traffic.
Why get it checked now?
Not every leak is in the membrane. Testing shows whether the membrane is breached, so other causes can be checked. Outbuildings and barns around Thong are easy to forget, but a failed roof there can spoil what’s stored inside. A quick look before winter can save a lot.
Larger roofs, taller buildings and commercial roofs take longer, so they’re priced to match. You’ll know the figure before booking.
Why book with us
- Plain-English reports with photos
- Drone and thermal imaging surveys available
- Covered by professional indemnity and public liability insurance
- Over 5,000 surveys carried out
Read our cost guide and what we found on two real jobs.