Kent · London and the South East
How Green Electronic Leak Detection
Electronic leak detection around How Green, with a written report you can act on. Book a weekday or weekend visit.
- Breaches around outlets and penetrations
- Leaks through a flat roof with no obvious cause
- Holes left by work on the roof
About our electronic leak detection in How Green
Electronic leak detection works on many flat roof membranes, on homes, blocks and commercial buildings. It helps trace a leak you already have or to test a new membrane before it’s covered. Each roof is quoted on its size and build-up. We can test on weekdays and at weekends when conditions allow. Tell us about your roof to find out more. We survey liquid-applied waterproofing, roof terraces and balconies and commercial flat roofs, and people most often book us about leaks showing away from the breach and water coming in under a flat roof.
In a small place like How Green, a flat roof can stand in the open, which is hard on edges, upstands and joins in the covering. Felt roofs, which often last around 15–20 years, typically 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 doesn’t just list problems. It explains what we found, why it matters and what we recommend, so you can plan your next steps.
- Place
- How Green (TN8)
- Region
- Kent
- Cost
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Appointments
- Monday to Sunday, daytime
- Insurance
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
When you need someone else
Every survey has limits, and we’d rather be clear about that before you book. Bear these in mind:
- Fixing the holes we find
- Areas we can’t reach or that cannot be tested
- Moisture spread under the membrane
Not sure which survey suits your roof? You can phone 07833 053749 or use the contact form and we’ll tell you. The full list of what we check.
Roofs we survey in How Green
- Green roofs
- Single-ply roofs
- Roof terraces and balconies
- Commercial flat roofs
- Liquid-applied waterproofing
- Flat roof membranes
What we do, step by step
A survey visit follows a simple order: we listen to what’s been worrying you, inspect the roof from every safe vantage point, take photographs as we go and record our findings for the written report. It typically takes a length of time set by the membrane area and the build-up, which we’ll explain when we quote. Around How Green, older homes can have small or awkward roof spaces, so tell us about the loft hatch and any ladder. We only go where it’s safe.
- We agree the area to be tested.
- The surface is prepared for the chosen method.
- Testing runs across the agreed area.
- Each breach found is located and recorded.
- You receive the results to pass to your roofer.
Before we arrive
- Leave a clear route to the loft
- Keep pets inside or away from the areas we are looking at
- Let us know about parking near the property
Booking a survey
If you’re buying, it is useful to book soon after your offer is accepted, so there’s time to use the report before exchange. For any other survey, just call 07833 053749 or send us an email when you’re ready.
Advice
Roof by roof
Single-ply membranes
Many offices and units have single-ply roofs. Laps and fixings are where holes often appear.
EPDM rubber roofs
EPDM rubber roofs often last 30–50 years, but can still be punctured.
Prices for electronic leak detection in How Green
Several things affect the price of a survey:
- The height of the building and how the roof can safely be seen
- Extensions, dormers and garages with roofs of their own
- The size of the roof
- House, block, shop or office
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. We confirm the price for your survey before booking.
What to let us know when you get in touch
Some details help us suggest the right survey and price. When you contact us, it helps to mention:
- Pictures from the garden or a window, if you have them
- The style of property, from a terrace to a block
- What made you get in touch
- Where water is showing inside, if it is
Most bookings start with a short call: ring 07833 053749 or email us and we’ll ask a few questions about the roof. You’ll have a price before anything is arranged.
Places near How Green
Also in How Green
Tips from our surveys
Getting the most from electronic leak detection starts before we arrive and carries on afterwards. Tips:
- Have roof specifications to hand
- Get leaks traced quickly
- Note where leaks show inside and when
- Make sure trades protect the waterproofing
You receive a report showing where each breach was found, with photos. Your roofer uses it to carry out repairs.
Consider testing a new membrane before it is covered. It’s easier to find holes before more layers are added.
Common questions in How Green
Does a conservation area affect roof work in How Green?
The council and Historic England’s list are the places to check. It is worth checking before planning roof work, as both can affect what’s allowed.
Do you carry out roof surveys in How Green?
Yes. We survey roofs across London and South East England, and How Green is part of that. You can phone 07833 053749 or email us with the address and some details.
Do you carry out surveys on Saturdays and Sundays?
We carry out surveys on any day of the week. To arrange a date, phone 07833 053749 or send us an email.
Can you tell me if my roof has asbestos?
No. Our report may flag materials that could contain asbestos, but only a specialist asbestos surveyor can confirm it. It may be present in buildings built or refurbished before 2000.
Can you give me structural calculations?
No. We are experienced roof surveyors, and visible signs such as sagging are noted, but calculations and an engineer’s opinion are outside what we do. The report will say if you need an engineer.
How much time does ELD need?
The roof’s size and build-up decide how long it takes. You’ll know roughly how long before we start.
How quickly is the report sent?
Basic reports arrive within 48 hours, Standard reports in 24–48 hours and Premium reports on the same day. All of them come by email, ready to forward.
What electronic leak detection looks like in How Green
About 0.7 miles south lies Hever Castle, a reminder of how long the area around How Green has been built on. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and a listed home or one in a conservation area may need consent for changes of material. 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. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
Take a building like Hever Church of England Voluntary Aided Primary School: large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly. If you own a rental within reach of Hever 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 St Peter are frequently among the oldest in a place, and if your house is among the older ones nearby, flat-roofed rear additions and dormers added over the years are worth checking.
How Green is about 7 miles south-west of Sevenoaks, in Kent. Roofs in How Green get the same thorough look as anywhere else in Kent. We cover towns and villages across Kent. We also survey roofs in Crawley.
Postcode districts we cover here for electronic leak detection: TN8. Whether your property is on Hever Road and How Green Lane or anywhere close by, we can survey it. We also cover Hever (1 mile south), Newtown (2 miles south), Markbeech (2 miles south), Chiddingstone Causeway (3 miles east) and Chiddingstone Hoath (3 miles south-east). We also work in nearby towns such as Sevenoaks (7 miles north-east), Royal Tunbridge Wells (8 miles south-east), Tonbridge (7 miles east), Swanley (14 miles north), Kings Hill (14 miles east) and Paddock Wood (12 miles east).
Local landmarks in How Green
Typical jobs here are in homes near The Wheatsheaf Public House and Chiddingstone Castle Park and Gardens and the streets around them. For rail, the closest station is Hever station, roughly 1.3 miles south-west. Well-known places in the area include Tandridge Priory (5.4 miles north-west) and Hever Castle (0.7 miles south).
Surveys for landlords and agents in How Green
Shared roofs need a little more planning: access has to be agreed with whoever owns or manages the building. Let us know about it when you book and we’ll plan the survey around it.
Managing agents and residents’ management companies use roof surveys to plan maintenance. Recommendations are set out with the most urgent first where relevant, which helps with budgets and planning.