West Sussex · London and the South East
Langley Green Electronic Leak Detection
A careful look at the flat roof membrane at your property in Langley Green, with photographs and a written report.
- Punctures from foot traffic or tools
- Waterproofing to test before it is covered
- Damp inside with no sign on the roof
Do you need electronic leak detection in Langley Green?
Flat roof membranes can be punctured by foot traffic, dropped tools or debris. Many are tiny but water still finds them.
We are often asked to look at:
- Leaks under green or ballasted roofs
- Damp inside with no sign on the roof
- Waterproofing to test before it’s covered
- Holes around roof penetrations
Take an older house close to Voice of Deliverance Full Gospel Church of God: later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear.
Before booking any roof surveyor
- Whether you get a written report with photos
- Which parts of the roof they’ll actually see
- Are they insured for the work?
- How much experience they have with roofs like yours
About our electronic leak detection in Langley 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 check a new membrane before handover. We quote for each roof based on its size and build-up. We can test on weekdays and at weekends, depending on the weather. Just ask about your roof. If you’ve noticed holes left by work on the roof and breaches hidden under paving or planting, a survey will tell you what’s going on, on commercial flat roofs, flat roof membranes and green roofs alike.
In smaller places like Langley Green, flat roofs are mostly on extensions, garages, porches and dormers. Even a small flat roof can let plenty of water into the room below. Knowing the covering and how it was laid tells you what to expect from it, from felt and asphalt to EPDM rubber and GRP. From an upstairs window, look for standing water, splits and edges coming away.
Pictures do a lot of the work in our reports, because a photo of a cracked flashing says more than a paragraph. Anything out of sight on the day is listed as such.
- Where
- Langley Green (RH11, RH10)
- Wider area
- West Sussex
- Prices
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- Appointments
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
Landlords, agents and block managers in Langley Green
With a portfolio of properties, you can book surveys for several addresses. To arrange surveys for several addresses, phone 07833 053749 or use the contact form with the addresses.
Landlords, agents and building managers in Langley Green and across West Sussex can book any of our surveys. To discuss a property or a block, phone 07833 053749 or email us.
What a survey costs
We confirm the price for your roof before you book. This is what makes a difference:
- The roof’s overall size
- Whether thermal imaging or a drone is needed
- Extensions, dormers and garages with roofs of their own
- How tall the building is and how easy the roof is to see
Larger roofs, taller buildings and commercial roofs take longer, so they’re priced to match. The price is confirmed before booking.
What we need to know
There is no need for technical words. It is enough to let us know:
- How the loft is reached, if there is one
- When you need the report by
- Pictures from the garden or a window, if you have them
- The address and postcode of the property
A quick phone call is normally the easiest start: phone 07833 053749 or email us, and we’ll ask about the building and what you need. You’ll have a price before anything is arranged.
Your questions about electronic leak detection in Langley Green
Is Langley Green within the area you cover?
Yes, Langley Green is covered. Our area covers London and the South East, from towns to the smallest villages. Longer journeys are simply planned beforehand.
Do you look at commercial flat roofs near Langley Green, like hotels?
Yes, commercial flat roofs are part of what we cover. For a bigger roof, you will get a quote based on the building, and roof access is agreed with you before the visit.
What’s the price of ELD?
We quote for each roof individually. Let us know about the roof and where it leaks, and call 07833 053749 or use the contact form for a quote.
Do I need to be at home?
Not necessarily. If we only need the outside, we can agree that ahead of time, but anything inside needs someone there to give access.
How many surveys have you done?
Over 5,000 surveys so far, over more than 20 years.
Do you carry out surveys on Saturdays and Sundays?
We survey seven days a week: weekdays, Saturdays and Sundays. Just let us know the days that suit you.
Do you look in the loft space?
If the survey needs it and the loft space can be reached safely, yes. A clear path to the hatch helps.
Electronic leak detection around Langley Green
Older houses across Sussex frequently have handmade clay tiles, and many have tile-hanging on their upper walls. Some old buildings in Sussex have Horsham stone slab roofs. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. Langley Green is part of Crawley, one of the post-war new towns. Many homes in the new towns date from the post-war decades, with concrete interlocking tiles, low-pitched roofs and flat-roofed garages and porches. Flat-roofed garages, porches and extensions from that era may have been re-covered more than once, or not at all. Cement sheet roofs on buildings from before 2000 may contain asbestos, so a specialist asbestos surveyor should check them before they’re disturbed.
If you let a flat or house near Crawley station, the flat roof over a let home is worth a look before it becomes a tenant complaint. A roof leak in a hotel or guest house around Langley Green means lost rooms as well as repairs, so it’s worth knowing the roof’s condition.
Langley Green is about 1 mile north of Crawley, in West Sussex. Whether the building in Langley Green is a house, a flat or a commercial unit, the roof can be surveyed. Our West Sussex coverage includes Langley Green and the places around it.
Surveys in RH11 and RH10 work the same way as everywhere else we cover. Whether your property is on London Road, Cherry Lane and Dobson Road or a nearby road, we can survey it. If you’re just outside Langley Green, we cover West Green (1 mile south), Crawley (1 mile south), Three Bridges (2 miles south-east), Southgate (2 miles south) and Forge Wood (2 miles east). Larger places within reach include Horsham (7 miles south-west), Haywards Heath (10 miles south-east), Burgess Hill (12 miles south), East Grinstead (8 miles east), Broadfield (3 miles south) and Billingshurst (14 miles south-west).
Landmarks near Langley Green
Typical jobs here are in homes near Dr Samuel Johnson pub, Central Sussex College and Hazelwick School and the streets around them. The nearest railway station is Crawley station, about 1.4 miles south of the centre. Other landmarks nearby include Crawley Museum (1 mile south) and Langley Green Hospital (under half a mile south). Not far away are Tilgate Lake.
Roof by roof
Liquid-applied waterproofing
Small holes in liquid waterproofing may leak. Where the roof suits it, testing can find them.
Green and ballasted roofs
Roofs with planting or ballast hide the membrane. Testing may still be possible but it depends on the layers.
What we cannot see
It’s a careful look at the flat roof membrane, not the whole story. Its limits include:
- Leaks from walls, copings or rooflights
- Some conductive membranes
- Fixing the holes we find
If in doubt, phone 07833 053749 or send us an email and we will point you to the right survey before booking. What our survey covers.
Roofs we survey in Langley Green
- Single-ply roofs
- Flat roof membranes
- Commercial flat roofs
- Green roofs
- Roof terraces and balconies
- Liquid-applied waterproofing
The survey, step by step
A survey visit follows a simple order: we listen to what’s been worrying you, look at the roof from every safe viewpoint, take photos as we go and record our findings for the written report. Most visits take a time that depends on the size of the roof and how it’s built, and we’ll give you a guide when quoting. In a smaller place like Langley Green, as anywhere, the forecast plays a part: drone flights and thermal imaging need the right conditions, while a look from the ground and the loft can go ahead in most weather.
- You tell us about the roof and where water is showing.
- We check whether the membrane and build-up suit ELD.
- 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.
Before we arrive
- Show us where any leaks or stains appear
- If it isn’t your property yet, arrange access through the agent
- Make a note of anything you’d like us to look at
Book a survey
Getting a price is simple: just phone 07833 053749 or email us, let us know about the property and we’ll suggest the right survey. The price is agreed up front.