West Sussex · London and the South East
Copthorne Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes in Copthorne. We’ve completed more than 5,000 surveys across London and the South East.
- Damp inside with no sign on the roof
- Gaps at membrane joints
- Repairs that haven’t stopped the leak
How we price electronic leak detection
Every roof is different, so prices are confirmed before you book. This is what makes a difference:
- Any need for thermal images or a drone flight
- The roof’s overall size
- How many separate roofs there are, such as extensions, dormers and garages
- The shape of the roof and its details
All our prices include VAT. We quote electronic leak detection for each roof, as the method and time depend on the roof. We confirm the price for the job before booking.
What to let us know when you get in touch
We will typically ask about:
- Any marks or damp showing indoors
- Pictures of the roof from a safe spot, if you have them
- Your timetable, like an exchange date
- Your postcode, so we can check access and travel
Most bookings start with a short call: ring 07833 053749 or email us. You will have a price before anything is arranged.
How electronic leak detection works in Copthorne
ELD is a way of pinpointing breaches in a flat roof’s waterproofing membrane. It uses a small electrical current which can only get through the membrane at a breach. That lets us locate holes that are too small to see so your roofer knows exactly where to repair. You get a report with photos of each breach found. We survey flat roof membranes, green roofs and liquid-applied waterproofing, and people most often book us about breaches hidden under paving or planting and damage from equipment installers.
Around a smaller place like Copthorne, flat roofs normally cover extensions, garages and dormers. They’re small, but a leak over a kitchen extension can do a lot of harm. Knowing the covering and how it was laid tells you what to expect from it. Ponding, splits and lifting edges are the signs to look for from a window.
Findings are set out part by part, from the coverings down to the gutters, each with a short note and a photo. It records what’s sound as well as what isn’t.
- Where
- Copthorne (RH10, RH6)
- Wider area
- West Sussex
- Prices
- Quoted for your roof
- Your report
- A written report with photos, by email
- When we survey
- Weekdays, Saturdays and Sundays
- Insured
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
What we can’t see
It’s a careful look at the flat roof membrane, not the whole story. Its limits include:
- Leaks from walls, copings or rooflights
- Parts of the roof covered by fixed equipment
- Roofs whose membrane or build-up is not suitable
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.
What this survey covers
- Commercial flat roofs
- Liquid-applied waterproofing
- Green roofs
- Single-ply roofs
- Flat roof membranes
- Roof terraces and balconies
Your questions about electronic leak detection in Copthorne
Can you look at the flat roof of a hotel or office near Copthorne?
Yes. As well as homes, we check flat roofs on offices, hotels, blocks of flats and commercial units. Larger commercial roofs are quoted for the building, and roof access is agreed with you ahead of the visit.
Is my home in Copthorne listed or in a conservation area?
For listing, use Historic England’s list; for conservation areas, ask the council. The answer matters most when a change of material is on the cards.
Do you test for asbestos?
No. Asbestos surveys and sampling aren’t something we do. Where a material might contain it, such as old cement sheets on a building from before 2000, the report flags it.
Does someone need to be in?
Someone needs to let us in if we’re looking inside or in the loft. Access is agreed with you when you book.
Will you check the loft?
If it’s needed and safe to reach, yes. Inside, we look for damp, staining, gaps and sagging, as far as the space allows.
Can you survey a shared roof?
Yes. A shared roof needs access agreed first, with whoever owns or manages the building. Mention it when you contact us and we’ll plan the survey around it.
How does ELD work?
A sound membrane blocks the test current, but a hole lets it through. That lets us find breaches that are too small to see.
Local flat roofs in Copthorne
There are several hotels within about a mile and a half of Copthorne, and hotels, like offices and blocks of flats, often have flat roofs. If you look after one, a leak through a flat roof can put a room out of use. With Gravetye Manor about 4.5 miles south-east, Copthorne sits in an area with a long building history. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead.
If you live in an older home near St John's Church, flat-roofed rear additions and dormers added over the years are worth checking. Take a building like Fairway Infant School: large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Copthorne is about 3 miles north-east of Crawley, in West Sussex. Houses, flats, blocks and commercial buildings in Copthorne can all book electronic leak detection. Our West Sussex coverage includes Copthorne.
Here we cover the RH10 and RH6 postcode area for electronic leak detection. We offer electronic leak detection to properties on Church Road, Brookside and Bridgelands. You will find Copthorne on the A264, which makes it straightforward to reach. If you are just outside Copthorne, we cover Shipley Bridge (1 mile north-west), Forge Wood (1 mile west), Tinsley Green (1 mile west), Burstow (1 mile north) and Keeper's Corner (1 mile north-east). Larger places within reach include Crawley (3 miles south-west), Horsham (10 miles south-west), Haywards Heath (10 miles south), Burgess Hill (12 miles south), East Grinstead (5 miles east) and Broadfield (4 miles south-west).
Local landmarks in Copthorne
Locally, jobs take us to homes and businesses close to Worth Park Gardens, The Cherry Tree pub and Hazelwick School and the streets around them. The nearest railway station is Gatwick Airport station, roughly 2 miles north-west of the centre. Well-known places in the area include Effingham Park Motor Museum (1.6 miles east) and County Mall (3 miles south-west). Open spaces near Copthorne include Hedgecourt Lake.
For landlords and managing agents
Businesses and commercial landlords can book us too, including offices, shops and units. Bigger roofs take more time.
We survey roofs for letting agents and landlords as well as homeowners. A written report with photos gives you a clear record of the flat roof membrane, useful for planning maintenance.
Towns and villages near Copthorne
Also in Copthorne
When to book a survey in Copthorne
Joints and laps in a membrane can fail over time. A gap that is hard to see can let water in for months before it shows.
It is worth booking a survey if you’ve seen:
- Leaks showing away from the breach
- Breaches hidden under paving or planting
- Punctures from foot traffic or tools
- Waterproofing to test before it is covered
If you look after a shop, office or commercial unit, for example near County Mall, flat roofs over shops and units are easy to forget until water comes through a ceiling.
Questions to ask before you book
- Whether the inside of the roof is included
- What they won’t be able to tell you
- Is there a chance to talk the report through?
- Do they have a CAA Flyer ID and Operator ID for drone work?
Why get it checked now?
Repairs in the wrong place leave the leak in place. Testing shows where the membrane is actually breached. In an older home around Copthorne, water from a roof defect can get into timber and plaster, and that’s a much bigger job than the original defect.
The cost of a survey depends on the roof: its size, its height, how many sections it has and how safely it can be seen. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Why choose Independent Roof Survey in Copthorne
- Professional indemnity and public liability insurance
- CAA-registered drone operator (Flyer ID and Operator ID)
- Independent findings on the roof’s condition
- Satisfaction rate of 98%
Take a look at how roof surveys are priced or what we found on two real jobs.
How the survey works
We photograph the roof as we go, so the report shows exactly what we saw. Close-ups come from the safest viewpoint available, including by drone where it is applicable and the weather allows. A typical visit takes longer on a large roof than a small one, with the construction of the roof playing a part too. Parking around Copthorne is usually easier than in a town centre, but mention lanes, gates or long drives. On bungalows and lower roofs, much can be seen from ground level, with the loft showing the underside, while taller roofs may need other vantage points or the drone where it applies.
- We start by finding out what the roof is made of and where it leaks.
- The roof is assessed to see if electronic testing will work on it.
- We pick the low-voltage or high-voltage method that suits the roof.
- We test the membrane and find where current is passing through it.
- You get a report showing where each breach is, for your roofer to repair.
How to prepare
- Tell us about parking before the day
- Make sure we can get to the back of the property
- Keep pets inside or away from the areas we’re looking at
Arrange a survey
We survey roofs on weekdays and at weekends. To arrange a day that suits you, call 07833 053749 or use the contact form with the address and the days you’d prefer.