Surrey · London and the South East
South Merstham Electronic Leak Detection
Find out the condition of the flat roof membrane at your property in South Merstham. Visits run on weekdays and weekends, in the daytime.
- Leaks under green or ballasted roofs
- New roofs to check before paving or planting
- Holes left by work on the roof
Electronic leak detection in South Merstham: what you get
Our ELD report shows where each breach was found with photos. It tells your roofer exactly where to repair instead of hunting for the leak. We do not estimate repair costs; that’s for your roofer to price. Testing again after repairs can confirm the breaches have been dealt with if the build-up allows. You get a written report with photos. Typical surveys look at holes left by work on the roof and leaks showing away from the breach, across green roofs, single-ply roofs and flat roof membranes.
Around a smaller place like South Merstham, 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. From an upstairs window, look for standing water, splits and edges coming away.
You can share the report with anyone who needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent, whichever applies.
- Location
- South Merstham (RH1)
- Region
- Surrey
- Price
- Quoted for your roof
- Your report
- A written report with photos, by email
- Appointments
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Phone
- 07833 053749
- Updated
- 27 October 2026
Landlord and commercial surveys in South Merstham
With a portfolio of properties, surveys can be booked for more than one address. To discuss a number of properties, phone 07833 053749 or use the contact form with the addresses.
We survey roofs for letting agents and landlords as well as householders. The report gives you a dated record of the flat roof membrane, with photographs, which helps you plan work between tenancies.
What electronic leak detection doesn’t cover
No survey can tell you everything, and we’d rather be clear about that before you book. Keep these in mind:
- Leaks from walls, copings or rooflights
- The extent of water in the insulation
- Parts of the roof covered by fixed equipment
If you’re not sure which survey you need, ring 07833 053749 or drop us an email and we’ll give you a straight answer. The full list of what we check.
Roofs we survey in South Merstham
- Flat roof membranes
- Single-ply roofs
- Roof terraces and balconies
- Commercial flat roofs
- Green roofs
- Liquid-applied waterproofing
Your questions about electronic leak detection in South Merstham
Is my home in South Merstham listed or in a conservation area?
For listing, use Historic England’s list; for conservation areas, ask the council. It matters most if you’re planning to re-roof in a different material.
Is South Merstham in the area you cover?
We do. Every survey there gets the same written report with photographs.
What does the report include?
You get our findings in writing, part by part, with photos, and ends with what we recommend. Points are put by urgency where it matters.
Can you inspect my roof with a drone?
Where it helps and the rules allow, yes. 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 look in the roof space?
Where it is relevant to the survey and there is safe access, yes. Please clear anything stored under the hatch.
Is my roof suitable for ELD?
That depends on the roof’s membrane and layers. Share any details you have and we will confirm suitability.
What is electronic leak detection?
A sound membrane blocks the test current, but a hole lets it through. That is how we locate breaches you cannot see.
Roof by roof
EPDM rubber roofs
Certain rubber membranes are conductive which can limit electronic testing. We’ll tell you if yours is not suitable.
Bituminous membranes
Bitumen roofs can often be tested electronically, depending on what’s below.
Towns and villages near South Merstham
What else we do in South Merstham
What we’re asked to look at in South Merstham
Water travels under flat roof membranes. The leak may show some distance from where water gets in, so tracing it by eye is difficult.
Things that often lead to a survey include:
- Leaks at pipes, outlets or fixings
- Breaches hidden under paving or planting
- Leaks that return after repairs
- Failed seams and laps
If you look after a building such as Merstham Primary School, a large flat roof with lots of outlets and rooflights has many places where a membrane can fail.
Before you book any roof surveyor
- Is there a chance to talk the report through?
- What they won’t be able to tell you
- Will they check the loft as well as the outside?
- Whether you get a written report with photos
How the survey works
When we arrive, we begin with a quick chat about the roof and anything that is worrying you. We then inspect everything that can safely be seen. The survey typically takes as long as needed for the size of the roof and how it’s built, which we set out in the quote. Homes around South Merstham frequently have gardens on more than one side, which gives us room to step back and see the roof. Mention any side of the property we can’t get to. The loft, where there is safe access, completes the picture.
- First, you tell us 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.
- You get a report showing where each breach is, for your roofer to repair.
How to prepare
- Note where any stains or damp appear
- Check pets are kept safely away
- Let us know where we can park nearby
How to book
If you have photos of the roof, send them over. Pictures from ground level or a window are fine. To get started, phone 07833 053749 or use the contact form.
Related advice
Flat and commercial roofs around South Merstham
What can be done to an older roof may depend on listing or a conservation area. Your council and Historic England’s list will tell you where you stand. Older houses across Surrey often have handmade clay tiles, and many have tile-hanging. Some old buildings in Surrey and Sussex have Horsham stone slab roofs. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
If you run a business near The Belfry, a flat roof over a business is out of sight and out of mind until it leaks. Take an older house close to All Saints': flat-roofed rear additions and dormers added over the years are worth checking.
South Merstham is about 2 miles north-east of Redhill, in Surrey. Anywhere in South Merstham, we can carry out electronic leak detection at your property, on a weekday, Saturday or Sunday. South Merstham is one of the towns and villages in Surrey where we work. We also survey roofs in Crawley.
We survey roofs across RH1 for electronic leak detection. If you need electronic leak detection at a property on Station Road South, London Road South and Station Road or a nearby road, we can survey it. We also cover the places around South Merstham: Merstham (1 mile north), Holmethorpe (1 mile south-west), Gatton (1 mile west), Nutfield (2 miles south-east) and Redhill (2 miles south-west). Within a short drive, we also cover Epsom (7 miles north-west), Horley (6 miles south), Ewell (8 miles north-west), Reigate (3 miles south-west), Walton-on-Thames (14 miles north-west) and Caterham (3 miles north-east).
Near you in South Merstham
We work in homes and buildings around Merstham Park School, Nutfield Marshes and East Surrey College and the streets around them. South Merstham has its own railway station: Merstham station. A little further out are Bletchingley Castle (2.3 miles south-east) and The Belfry (1.7 miles south-west). The countryside around South Merstham includes Colley Hill and Mercers Lake.
How we price electronic leak detection
Prices vary from roof to roof, and it comes down to:
- Height and safe access
- Chimneys, valleys, parapets and other details
- Roof area
- The number of roofs, including extensions and garages
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. You’ll know the price for your roof before you book.
Getting in touch
Some details help us recommend the right survey and price. When you contact us, it is useful to mention:
- When you need the report by
- Your postcode, so we can check access and travel
- The kind of building and roof involved
- Whether there is a loft hatch, a shared roof or tricky access
Buyers should book once an offer has been accepted, so you have the findings in time to act on them before you exchange. For any other survey, just ring 07833 053749 or use the contact form when you’re ready.