Surrey · London and the South East
Electronic Leak Detection in Norwood Hill
Independent electronic leak detection in Norwood Hill. We’ve completed more than 5,000 surveys across London and the South East.
- Water coming in under a flat roof
- Repairs that haven’t stopped the leak
- Stains far from any visible defect
About our electronic leak detection in Norwood Hill
A leak in a flat roof often shows up a long way from where the water gets in. That makes leaks hard to trace by eye. ELD tests the waterproofing directly and locates the breach. It’s testing only, and the repair is for your roofer. On suitable roofs, it replaces guesswork with a located breach. The results then follow in a written report with photos. We survey flat roof membranes, commercial flat roofs and liquid-applied waterproofing, and the problems we’re asked to look at most are leaks through a flat roof with no obvious cause and stains far from any visible defect.
Older buildings in small places like Norwood Hill 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. Knowing the roof’s condition is the starting point. Listed building consent is needed for changes that affect a listed building’s special interest.
If any part of the flat roof membrane couldn’t be seen safely, we say so in the report. That way, it’s clear what was covered and what wasn’t.
- Location
- Norwood Hill (RH6)
- Wider area
- Surrey
- Cost
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Survey days
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
Tips that help
Nothing here needs a ladder. A few suggestions:
- Note where leaks show inside and when
- Clear flat roof outlets regularly
- Consider ELD before paving or planting goes on
- Avoid repeated repairs without finding the cause
Keep the report with the roof’s records. It is a dated record of the membrane’s condition.
Consider testing a new membrane before it’s covered. It is easier to find holes before more layers are added.
Places near Norwood Hill
What else we do in Norwood Hill
Why it is worth a survey now in Norwood Hill
Patching where you think the leak is frequently misses it. Testing shows where the membrane is actually breached. In a place like Norwood Hill, a barn or garage roof left to fail puts whatever is inside at risk. A quick look before winter can save a lot.
For a price for your roof in Norwood Hill, ring 07833 053749 or drop us an email with the address and a few details. We’ll confirm the figure before booking.
What you get with us
- Weekday and weekend surveys
- Professional indemnity and public liability insurance
- Two decades and more of roof surveys
- Thermal imaging and drones used where they help
Your questions about electronic leak detection in Norwood Hill
Is my home in Norwood Hill listed or in a conservation area?
The council and Historic England’s list are the places to check. Either can affect what roof work is allowed, so it is worth checking before planning any.
Do you carry out roof surveys in Norwood Hill?
Yes, Norwood Hill is within the area we cover. We work right across London and the South East. You can ring 07833 053749 or drop us an email with the address and a few details, and we’ll talk through which survey suits.
What is electronic leak detection?
ELD passes a small electrical current across the roof to locate holes in the membrane. The current only gets through where the membrane is breached, which shows us where the hole is.
What will the report tell me?
It works through the roof part by part, in writing and with photos, and ends with what we recommend. The most urgent items are made clear.
Does electronic leak detection work on all membranes?
ELD doesn’t suit every roof. Certain membranes are conductive and some roofs lack the layer the test needs. We will tell you if yours is not suitable before testing.
Which method do you use?
The method is chosen to suit the roof. Low-voltage methods are normally carried out on a wet roof, while high-voltage testing needs a dry, exposed membrane.
When does the report arrive?
The Premium Survey report comes the same day, the Standard within 24–48 hours and the Basic within 48 hours. Each one is emailed.
What we look for on each type of roof
Green and ballasted roofs
Some layers may need lifting for testing. We discuss this before quoting.
Bituminous membranes
Bituminous roofs often have laps and old repairs that can leak. We test where the roof suits it.
Flat roofs in Norwood Hill
Many older homes in Surrey have handmade clay tiles and tile-hung upper walls. Some old buildings in Surrey and Sussex have Horsham stone slab roofs. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. Before planning roof work on an older home, find out whether it is listed or in a conservation area. Changes that affect a listed building’s special interest need listed building consent, and councils can also use Article 4 directions to control changes in conservation areas.
If you let a flat or house near Horley station, a flat roof over a rented flat is easy to forget until the tenant reports a leak.
Norwood Hill is about 2 miles west of Horley, in Surrey. We cover Norwood Hill and the rest of Surrey, as part of our work across London and the South East. Our area takes in places right across Surrey, large and small.
All of RH6 is covered for electronic leak detection. If you are just outside Norwood Hill, we cover Nalderswood (1 mile north-west), Charlwood (2 miles south), Cudworth (2 miles south-west), Parkgate (2 miles west) and Russ Hill (2 miles south). We also work in nearby towns such as Epsom (11 miles north), Redhill (5 miles north-east), Ewell (12 miles north), Reigate (4 miles north), Caterham (9 miles north-east) and Dorking (6 miles north-west).
What’s near Norwood Hill
We work in homes and buildings around Edolph's Copse, among other places. The closest station to Norwood Hill is Horley station, roughly 2.8 miles east. Other landmarks nearby include Reigate Castle (4.2 miles north) and Langley Green Hospital (3.6 miles south-east). The countryside around Norwood Hill includes Reigate Heath.
How we price electronic leak detection
When we price a survey, we consider:
- Commercial roofs and larger buildings
- Extra roofs, like extensions, dormers or garages
- How complicated the roof is, with its valleys, chimneys and parapets
- If the survey needs thermal imaging or a drone
Bigger, taller and commercial roofs take more time to survey, so they’re priced to match. The price is confirmed before booking.
Getting in touch
The more you let us know, the easier it is to price the survey. When you contact us, it’s useful to mention:
- How the loft is reached, if there is one
- Where any leaks, stains or damp patches show inside
- Photos of the roof, taken safely from ground level or a window
- Any deadline, like an exchange date
Our phone lines are open seven days a week. For a price or to book, phone 07833 053749 or send us an email.
The survey, step by step
On the day, we begin with a quick chat about the roof and anything that’s worrying you. We then inspect everything that can be seen safely, using the ground, windows, the loft and a drone where applicable. The survey typically takes as long as needed for the roof’s area and construction, and we’ll give you a guide when quoting. In a hamlet or village like Norwood Hill, a postcode doesn’t always lead to the right gate, so a few directions, or a note of a nearby landmark, help us arrive on time. The visit itself is the same as anywhere else.
- We agree the area to be tested.
- We get the roof ready for testing.
- Testing runs across the agreed area.
- We mark the breach locations in our records.
- You receive the results to pass to your roofer.
Preparing for the visit
- If it isn’t your property yet, arrange access through the agent
- Clear the way to the loft hatch
- Point out any leaks or damp patches
Book a survey
To get a price for electronic leak detection in Norwood Hill, ring 07833 053749 or send us an email. A few details about the property and the roof help us price the survey accurately.
Advice
Common roof problems in Norwood Hill
Holes in a membrane often come from feet, tools or debris. Some are too small to see, but still let water through.
Look out for signs like these:
- Leaks under green or ballasted roofs
- New roofs to check before paving or planting
- Leaks through a flat roof with no obvious cause
- Repairs that haven’t stopped the leak
For any home in Norwood Hill, it is the small, early fault that is cheapest to put right.
What to check before booking
- What exactly goes into their report
- Which viewpoints they use to see the roof
- Whether any drone flown is registered with the CAA
- Their report turnaround times