Surrey · London and the South East
Electronic Leak Detection in Longcross
Electronic leak detection to pinpoint holes in flat roof membranes for Longcross, from an experienced roof surveyor. Every survey comes with a written report and photos.
- Breaches around outlets and penetrations
- Failed seams and laps
- Punctures from foot traffic or tools
Honest limits
Our survey isn’t a RICS Level 2 or Level 3 survey, a structural engineer’s report or an asbestos survey. Other limits to bear in mind:
- Some conductive membranes
- Fixing the holes we find
- Leaks from walls, copings or rooflights
If you are not sure which survey you need, call 07833 053749 or drop us an email and we will give you a straight answer before you book. What a survey covers and does not.
What we check
- Commercial flat roofs
- Roof terraces and balconies
- Green roofs
- Liquid-applied waterproofing
- Single-ply roofs
- Flat roof membranes
Electronic leak detection in Longcross
ELD finds breaches in the membrane but not every way water gets in. Leaks from walls, copings, rooflights or pipes need other checks. If the evidence points elsewhere, we’ll say so. It won’t show water getting in through brickwork or around frames. The report makes clear what was and wasn’t tested. You’ll also know what to check next. Common reasons to book are holes left by work on the roof and breaches around outlets and penetrations, across commercial flat roofs, green roofs and liquid-applied waterproofing.
Some older homes in villages like Longcross are listed or in a conservation area, which can shape what a new flat roof may look like. If you’re planning work, check with the council first. Knowing the roof’s condition is the starting point. Changes that affect a listed building’s special interest need listed building consent.
The report is yours to share with whoever needs it: your solicitor, the seller, your insurer, a roofer or the building’s managing agent, whichever applies.
- Where
- Longcross (KT16)
- Region
- Surrey
- Cost
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- Survey days
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
FAQs for Longcross
Do you cover Longcross?
Yes. We work right across London and South East England, and Longcross is part of that. You can ring 07833 053749 or send us an email with the address and a few details.
Will you come out to Longcross?
Yes. Longcross is within the area we cover, which takes in towns, villages and rural addresses. We work right across London and the South East. Just mention lanes, gates or anything else about the route when booking.
Does the report include photographs?
Yes. Photographs are part of every report.
Does ELD work under paving or planting?
Sometimes. It depends on the build-up and the layers above the membrane and parts may need to be lifted. We will discuss it before we quote.
Can you survey at the weekend?
We survey on any day from Monday to Sunday, during the day. Let us know your preferred days when you book.
When does the report arrive?
Each package has its own report time. Basic is within 48 hours, Standard is 24–48 hours and Premium is the same day. If you have a deadline, like an exchange date, tell us when booking.
Can you inspect my roof with a drone?
Yes, where it is applicable. 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.
Do you need electronic leak detection in Longcross?
Water travels under flat roof membranes. The stain inside can be far from the hole which makes it hard to find by looking.
Things that frequently lead to a survey include:
- A flat roof leak that can’t be traced
- Holes left by work on the roof
- Holes around roof penetrations
- Leaks under green or ballasted roofs
The streets around a church such as Longcross Church are frequently 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 usually start.
Before booking anyone
- Whether any drone flown is registered with the CAA
- What the report includes, and whether it has photographs
- Whether they hold professional indemnity and public liability insurance
- Which limits apply to the survey
Flat and commercial roofs around Longcross
Historic houses like Botleys Mansion, about 2.3 miles east, show how far back building in the area around Longcross 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. Mixed in with those pitched roofs are a good many flat ones, over rear extensions, dormers, garages and shops.
If you let a flat or house near Longcross station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
Longcross is about 4 miles south-west of Egham, in Surrey. Whether the building in Longcross is a house, a flat or a commercial unit, the roof can be surveyed on a weekday or at the weekend. Longcross is one of the towns and villages in Surrey where we work for electronic leak detection. Our Guildford page covers surveys nearby.
Surveys in KT16 are booked the same way as anywhere else. We cover properties on Longcross Road, Tanglewood Close and Albury Close and the roads around them. Neighbouring places we cover for electronic leak detection include Trumps Green (1 mile north-east), Stonehill (1 mile south-east), Lyne (2 miles east), Mimbridge (3 miles south) and Ottershaw (3 miles south-east). Larger places within reach include Guildford (9 miles south), Woking (4 miles south), Camberley (7 miles south-west), Epsom (14 miles east), Farnham (15 miles south-west) and Ewell (14 miles east).
Around Longcross
In Longcross, that means homes and buildings near Gracious Pond, among other places. Longcross’s nearest station is Longcross station, about 0.6 miles north-west. Nearby you will also find St. Peter's Hospital (2.6 miles east) and Chobham Museum (2.2 miles south). The countryside around Longcross includes Virginia Water Lake and St Ann's Hill.
How the survey works
The visit has one job: to look at the flat roof membrane as closely as is safe and record what we find. Notes and photographs go into the written report. The visit typically takes a time that depends on the membrane area and the build-up, which we set out in the quote. Around Longcross, older homes can have small or awkward roof spaces, so it helps to know whether there’s a loft hatch and how easy it is to reach. Only areas that can be reached safely are inspected.
- First, we confirm which roof areas are included.
- We get the roof ready for testing.
- We work across the roof with the test equipment.
- Each breach found is located and recorded.
- You receive the results to pass to your roofer.
Before the survey
- Let us know about parking before the day
- For flats, make sure roof access has been agreed
- Move anything stored under the loft hatch
How to book
Surveys can be booked for weekdays, Saturdays or Sundays. To find a date that works for you, call 07833 053749 or email us with the address and the days you’d prefer.
Related advice
Why it is worth a survey now in Longcross
ELD before paving, ballast or planting goes on is simpler. Covered roofs are harder to test. Older and listed buildings around Longcross may need consent and matching materials for repairs, so leaving a defect until it is urgent leaves less time to plan.
Larger roofs, taller buildings and commercial roofs take longer, so the price reflects that. You will know the figure before booking.
Why book us in Longcross
- Over 5,000 surveys carried out
- 20+ years’ experience
- Drone and thermal imaging surveys available
- 98% customer satisfaction
Take a look at what a roof survey costs and two real surveys.
What we look for on each type of roof
EPDM rubber roofs
Some EPDM membranes conduct electricity which can limit electronic testing. We’ll say if the test will not work.
Inverted and paved roofs
A terrace or paved roof hides the waterproofing. Whether it can be tested depends on the build-up.
Also in Longcross
Useful tips for Longcross property owners
From years of surveys, a few habits stand out:
- Act on new leaks promptly
- Avoid repeated repairs without finding the cause
- Clear flat roof outlets regularly
- Consider ELD before paving or planting goes on
Once repairs are made, the roof can be tested again if you want to check them, where the roof still suits the method.
Act on leaks quickly. Water under a membrane can spread.