West Sussex · London and the South East
Electronic Leak Detection in Twineham Green
Electronic leak detection to pinpoint holes in flat roof membranes across Twineham Green, with drones and thermal imaging where they help. Get in touch for a price.
- Stains far from any visible defect
- Water coming in under a flat roof
- Repairs that haven’t stopped the leak
Surveys for landlords and agents in Twineham Green
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. Recommendations are set out by urgency where it matters.
Surveys can also be booked by buyers’ agents acting for a client. Reports are emailed, so they’re easy to pass on, photos included.
About our electronic leak detection in Twineham Green
ELD is a way of pinpointing breaches in a flat roof’s waterproofing membrane. It uses a small electrical current that passes through the membrane only where there is a breach. It can find holes too small to spot by eye, so your roofer can repair them. You get a written report with photos of each breach found. If you are worried about breaches hidden under paving or planting and failed seams and laps, we can find out what’s behind it, whatever the roof.
Older buildings in small places like Twineham Green may be listed or in a conservation area, and that can affect how an extension roof or dormer is re-covered. Check with the council before planning any change of material. Finding out what state the roof is in gives you the facts to plan with. Changes that affect a listed building’s special interest need listed building consent.
Where we cannot see part of the flat roof membrane, the report says so. That way, it is clear what was covered and what wasn’t.
- Location
- Twineham Green (RH17)
- Region
- West Sussex
- Price
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- Survey days
- Weekdays and weekends
- Insured
- Professional indemnity and public liability
- Call
- 07833 053749
- Last updated
- 27 October 2026
Before and after the survey
Over many surveys, some simple habits stand out as worth the effort:
- Don’t keep patching the same spot
- Share any drawings of the roof
- Keep outlets clear of debris
- Keep foot traffic on flat roofs to a minimum
If water has been getting in, insulation under the membrane may be wet. Your roofer can advise on that and other checks can help judge it.
Consider testing a new membrane before it is covered. It is easier to find holes before more layers are added.
What we do, step by step
Where it is relevant and can be reached safely, the roof space is checked as well as the outside. In the loft, the signs we look for are staining, damp, daylight and sagging. The whole visit typically takes as long as needed for the size of the roof and how it’s built, which we’ll explain when we quote. Older roofs in small places like Twineham Green can have low, tight loft spaces, so tell us about the loft hatch and any ladder. We only go where it is safe.
- 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.
- We test the membrane and find where current is passing through it.
- We send a report with photos of each breach so your roofer can repair it.
Before we arrive
- Check we can get to the back of the property
- Dig out any old roof reports or invoices
- Let us know about parking near the property
Book a survey
If you’re buying, it helps to book soon after your offer is accepted, so there is 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
How we price electronic leak detection
The price reflects the time and kit the roof needs. The main factors are:
- Whether it’s a home or a commercial building
- The roof’s overall size
- If the survey needs thermal imaging or a drone
- Extensions, dormers and garages with roofs of their own
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.
Getting in touch
There’s no need for technical words. It’s enough to let us know:
- Anything about access we should know
- What made you get in touch
- Any marks or damp showing indoors
- Your timetable, like an exchange date
Booking is simple: just ring 07833 053749 or email us, tell us about the property and we’ll explain which survey suits. We confirm the price before anything is booked.
Nearby places to Twineham Green
Other services in Twineham Green
What electronic leak detection looks like in Twineham Green
In Sussex, older roofs are often handmade clay tile, frequently with tile-hanging on the walls below. Horsham stone slab roofs survive on some old Sussex buildings. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. Ockenden Manor, about 3.8 miles north-east, is one of the historic houses in the wider area around Twineham Green. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and any change of roofing material on a listed home needs checking with the council first.
Landlords with a home close to Burgess Hill station may find that flat roofs on let property tend to be checked only when they fail, which is the costly way round. For an older house near a landmark such as The Parish Church of St Peter, the joins between later flat roofs and the old walls are where problems typically start. Anyone responsible for a site like Twineham CofE Primary School will know that a large flat roof with plenty of outlets and rooflights has many places where a membrane can fail.
Twineham Green is about 4 miles west of Burgess Hill, in West Sussex. We cover Twineham Green and the rest of West Sussex. Across West Sussex, we cover Twineham Green and the places around it. For surveys nearby, see our Brighton page.
Here we cover the RH17 postcode area for electronic leak detection. We also cover the places around Twineham Green: Twineham (1 mile south), Crosspost (1 mile north), Wineham (1 mile west), Kent Street (2 miles west) and Bolney (2 miles north). Larger places within reach include Crawley (10 miles north), Horsham (8 miles north-west), Worthing (13 miles south-west), Haywards Heath (5 miles east), Burgess Hill (4 miles east) and East Grinstead (14 miles north-east).
Local landmarks in Twineham Green
Twineham Green’s nearest station is Burgess Hill station, roughly 4 miles east. Other landmarks nearby include Burgess Hill Museum (3.9 miles east) and The Dene Hospital (2.2 miles east). Green spaces nearby include Wolstonbury Hill and Bedelands Farm Nature Reserve.
Twineham Green: your questions answered
Does a conservation area affect roof work in Twineham Green?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Do you carry out roof surveys in Twineham Green?
Yes. We work right across London and the South East, and Twineham Green is part of that. You can ring 07833 053749 or drop us an email with the address and some details, and we’ll talk through which survey suits.
When does the report arrive?
Each package has its own report time. Basic: within 48 hours. Standard: 24 to 48 hours. Premium: the same day. If you have a deadline, such as an exchange date, tell us when you book.
Are you structural engineers?
No. Our survey isn’t a structural engineer’s report, and it does not include calculations. If we see signs that need an engineer’s opinion, we’ll recommend one.
Will you walk on the roof?
Only if it is safe. We inspect what can be seen safely: from the ground, from windows, from inside the loft space, from the roof where it’s safe and by drone where applicable. The report says if anything couldn’t be seen.
What if it rains on the day?
It depends on the weather and the survey. High wind or heavy rain can make access unsafe and ground a drone, and we’d agree another day.
What does the report include?
It explains what we saw, what it means and what we’d suggest, with photographs throughout. It also says if any part of the roof couldn’t be seen safely, so you know exactly what was covered.
Why it is worth a survey now in Twineham Green
A visual inspection can miss tiny holes. ELD picks up breaches a visual check might miss, on suitable membranes. Where a roof is exposed, as many are in small places like Twineham Green, driving rain gets into any weakness, and older walls, once damp, take a long time to dry.
Larger roofs, taller buildings and commercial roofs take longer, so they’re priced to match. You will know the figure before booking.
Why book with us
- Independent findings on the roof’s condition
- We hold a CAA Flyer ID and Operator ID
- Every finding written up with photos
- Thermal imaging and drones used where they help
See our cost guide and two real surveys.
Different roofs, different checks
Liquid-applied waterproofing
Liquid waterproofing has no laps but holes and thin areas can occur. Suitability for ELD depends on the system.
Inverted and paved roofs
A terrace or paved roof hides the waterproofing. Suitability depends on the layers.