London and the South East

Electronic Leak Detection in Greater London

Electronic leak detection in all 764 towns and villages of Greater London, with a written report and photos.

Need electronic leak detection in Greater London?

Towns we cover in Greater London

What it covers: electronic leak detection to pinpoint holes in flat roof membranes. Pick your town below to see the details for your area.

Larger towns

What else we do in Greater London

Postcode areas we cover

Electronic leak detection in Greater London: how it works

There are different ELD methods. Low-voltage testing is typically done with the surface wet and high-voltage methods need the membrane dry and exposed. Which one suits depends on the membrane and the layers of the roof, and we will explain our choice. If neither method suits your roof, we will tell you before any testing starts. We survey flat roof membranes, liquid-applied waterproofing and roof terraces and balconies, and common reasons people get in touch are leaks showing away from the breach and leaks at pipes, outlets or fixings.

The visit usually starts outside and finishes in the loft: first the slopes, edges and gutters from every safe viewpoint, then the loft space where it can be reached. All told, expect a time that depends on the roof’s area and construction, and we’ll give you a guide when quoting.

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.

What affects the price in Greater London

For a price for your roof in Greater London, call 07833 053749 or drop us an email with the address and some details. The price is agreed before a date is set.

Why book with us

An independent view of the roof
More than 5,000 surveys completed
Covered by professional indemnity and public liability insurance
Thermal imaging and drones used where they help

Getting a price

We survey roofs seven days a week. To arrange a day that suits you, ring 07833 053749 or use the contact form.

Around London

In London, that means homes and buildings near St Mary-at-Hill, St George the Martyr and The BFI Reuben Library and the streets around them. Other local landmarks include Trinity Arms Public House (less than half a mile south-east), Ark Globe Academy (under half a mile south), Charles Dickens Primary School (less than half a mile north-west) and Newington Gardens (less than half a mile south). There’s a railway station in London itself: Elephant & Castle station. A little further out are Surrey Dispensary (less than half a mile south-east) and Baynard's Castle (0.9 miles north). Open spaces near London include Bellenden Road Nature Garden and St. James's Park Lake.

Schools near London include London School of Musical Theatre (under half a mile west)

Flat roofs across Greater London

From London, City of Westminster and Marylebone to business parks across Greater London, flat roofs come in every size. Outlets, upstands and laps are where membranes usually fail, so those get the closest look.

We work right across London and the South East, from the Isle of Wight to Hertfordshire, and Greater London is well within that. Visits run on weekdays and at weekends.

London: Hotels and guest houses near London can’t easily close rooms for a leak, so it’s worth knowing the roof’s condition. Shop and office owners around Gabriel's Wharf may find that a flat roof over a business is out of sight and out of mind until it leaks.

How the survey changes by roof type

Liquid-applied waterproofing

What lies under a liquid coating decides if ELD will work.

Bituminous membranes

Bitumen roofs can often be tested electronically, depending on what’s below.

Landlord and commercial surveys in Greater London

Buyers’ agents can book surveys on behalf of their clients. The report is emailed, so it can go straight to your client.

If the property is let, the agent or a tenant can let us in. We survey on any day of the week, which can make access easier.

Honest limits

A survey is a careful look at the flat roof membrane, but it can’t do everything. The main limits are:

Carrying out the repair work
Build-ups without a suitable layer below
Moisture spread under the membrane

Leave it or get it looked at?

Chasing a leak again and again is frustrating. A clear record of where the breaches are helps break that cycle.

Before booking any surveyor

What happens after the report arrives
Whether the inside of the roof is included
Their track record with similar roofs
Whether VAT is in the quoted price

Signs you need electronic leak detection

On a flat roof, water spreads under the waterproofing. The stain inside can be far from the hole, so tracing it by eye is difficult.

Typical things we’re asked to look at include:

Leaking laps in the waterproofing
Damp inside with no sign on the roof
Breaches hidden under paving or planting
Repairs that haven’t stopped the leak

Greater London: your questions answered

What’s the best way to book?

To arrange a survey, call 07833 053749 or send us an email and let us know the address and what you’d like to know. We will confirm the price and find a day that suits.

Do you use low-voltage or high-voltage testing?

We choose the method that suits the roof. You’ll know which method we plan to use before we start.

Which days do you carry out surveys?

Visits run seven days a week in the daytime, which suits people who work during the week. Just say which days work for you.

Does this replace a RICS home survey?

No. This is a survey of the roof only, so it is not a RICS Level 2 or Level 3 survey. It can sit alongside a RICS survey if you want both.

Do you survey roofs on blocks of flats?

Yes, once whoever controls the roof agrees access. On a shared roof we can only inspect the parts we are allowed to reach, and the report makes that clear.

Do you look in the roof space?

Where it’s relevant to the survey and there’s safe access, yes. A clear path to the hatch helps.

Do you cover Greater London?

Yes. We survey roofs in Greater London. For a price, phone 07833 053749 or drop us an email.