Greater London · London and the South East
Electronic leak detection in Holloway, Greater London
Electronic leak detection to pinpoint holes in flat roof membranes in Holloway, with drones and thermal imaging where they help. Get in touch for a price.
- Breaches hidden under paving or planting
- Leaks showing away from the breach
- Water coming in under a flat roof
About our electronic leak detection in Holloway
Electronic testing locates holes in the waterproofing but not every way water gets in. Water coming through walls, copings, rooflights or plumbing will not show on the test. If the evidence points elsewhere, we’ll say so. The test shows breaches in the membrane, not water coming through masonry or around frames. Our report keeps that distinction clear. You will also know what to check next. We survey green roofs, roof terraces and balconies and single-ply roofs, and people most frequently book us about waterproofing to test before it’s covered and holes around roof penetrations.
Commercial and residential blocks across London frequently have big flat roofs with plant, rooflights and access walkways. Each pipe, upstand and fixing through the covering is a possible weak point. For a building in Holloway, access is agreed with whoever manages the roof ahead of the visit. Plant bases, rooflights and cable entries are all places where water can get in.
What you get is a clear record of the flat roof membrane on the day we saw it. It is useful straight away, and a good reference for later.
- Location
- Holloway (N7, N19, N4)
- Region
- Greater London
- Prices
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Cover
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
What we look for on each type of roof
EPDM rubber roofs
Whether an EPDM roof can be tested depends on the membrane and build-up. We look at this first.
Liquid-applied waterproofing
Pinholes in a coating can let water through. ELD can help locate them on suitable roofs.
How the survey works
After the inspection, everything we found is written up as a written report with photos, sent to you by email. As for time on site, most surveys take more time on a big roof than a small one, with the construction of the roof playing a part too. Surveys in Holloway can be booked for any day of the week. It helps if you can point us to a visitor permit or a nearby bay, and to clear a path to the loft hatch. Upstairs rooms at the back are useful too, as they often give the best view of a rear addition.
- 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.
- 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.
Before the survey
- Have any paperwork from past roof work to hand
- Move anything stored under the loft hatch
- Make sure pets are kept safely away
How to book
A quick phone call is normally the easiest start: call 07833 053749 or use the contact form. The price is agreed before a date is set.
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FAQs for Holloway
Is Holloway in the area you cover?
Yes, Holloway is one of the places we work. The survey and report are the same in Holloway as anywhere else, and visits run on weekdays and weekends.
Is my home in Holloway listed or in a conservation area?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. The answer matters most when a change of material is on the cards.
Do you test for asbestos?
No. Asbestos surveys and testing are not part of what we do. We flag materials that could contain asbestos, such as cement sheets or soffits on pre-2000 buildings.
How much time does ELD need?
The roof’s size and build-up decide how long it takes. We will give you an idea when we quote.
Do you use low-voltage or high-voltage testing?
The method is chosen to suit the roof. Low-voltage testing normally needs a wet surface, while high-voltage testing needs a dry, exposed membrane.
Do you look in the roof space?
If there’s a loft and safe access to it, yes. The roof space can show things the outside cannot, like damp timbers, staining or daylight.
Do you use drones?
Yes, where it is applicable. Whether we can fly on the day depends on the weather and the airspace rules, and we check for restrictions near airports before flying. We hold a CAA Flyer ID and Operator ID.
Landlords, agents and block managers in Holloway
An agent can book and manage the survey for a landlord, and the report can go to both. Access is agreed with the tenant ahead of time.
For a freeholder or residents’ company, a roof report is a sound basis for a maintenance plan.
Signs you need electronic leak detection in Holloway
A breach can be left during installation. Testing before the roof is covered or handed over helps find them.
Common reasons to book include:
- New membranes needing a check before handover
- Leaking laps in the waterproofing
- Leaks through a covered membrane
- A flat roof leak that cannot be traced
If you own a rental within reach of Drayton Park station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Choosing a roof surveyor
- What the report includes, and whether it has photographs
- How much experience they have with roofs like yours
- Whether they hold professional indemnity and public liability insurance
- How soon the report will arrive
Why act early in Holloway
Some breaches are too small to see. Electronic testing can find breaches you can’t see by eye where the roof suits it. Any roof job in Holloway means planning around parking, neighbours and access. That is a good reason to find problems early, while there’s time to plan.
To find out what your survey will cost, call 07833 053749 or use the contact form with the address and a few details. We’ll confirm the figure before booking.
Why book us in Holloway
- 98% customer satisfaction
- Over 20 years’ experience
- Visits on any day of the week
- CAA-registered drone operator (Flyer ID and Operator ID)
Take a look at our cost guide and what we found on two real jobs.
More services for Holloway
What this survey can’t tell you
Every survey has limits, and it’s better to know them up front. Bear these in mind:
- Parts of the roof covered by fixed equipment
- How wet the insulation is
- Leaks from walls, copings or rooflights
Not sure which survey suits your roof? You can phone 07833 053749 or send us an email and we’ll tell you before you book. What our survey covers.
What this survey covers
- Roof terraces and balconies
- Flat roof membranes
- Commercial flat roofs
- Green roofs
- Liquid-applied waterproofing
- Single-ply roofs
Flat and commercial roofs around Holloway
Witanhurst, about 1.7 miles north-west, is one of the historic houses in the wider area around Holloway. Older homes in the wider area often have features worth a closer look, such as lead valleys, tall stacks and roofs that have been patched over the years. Welsh slate on Victorian and Edwardian terraces is a familiar sight across inner London. Behind many of their parapets sit butterfly roofs and valley gutters that cannot be seen from the pavement. If your home in Holloway is one of them, lead flashings, party-wall upstands and shared chimney stacks are part of the picture too. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
Take a building like Grafton Primary School: a large flat roof with a good many outlets and rooflights has many places where a membrane can fail. If you run a business near Brunswick Centre, flat roofs over shops and units are easy to forget until water comes through a ceiling.
Holloway is about 2 miles north-west of Hoxton, in Greater London. Bookings from Holloway are handled just like any other: a call or an email, a price, then a date. Across Greater London, we cover Holloway.
Here we cover the N7, N19 and N4 postcode area for electronic leak detection. We cover properties on Penn Road, Lough Road and Tabley Road. We also cover the places around Holloway: Nag's Head (1 mile north), Lower Holloway (1 mile south), Tufnell Park (1 mile west), Upper Holloway (1 mile north-west) and Barnsbury (1 mile south). Within a short drive, we also cover London (4 miles south), City of Westminster (3 miles south-west), Marylebone (3 miles south-west), Kensington (5 miles south-west), Shoreditch (3 miles south-east) and Walthamstow (5 miles north-east).
Local landmarks in Holloway
In Holloway, that means homes and buildings near Vaughan Williams Memorial Library, Whittington Park and Beacon High, among other places. You’ll also find Musical Theatre Academy (0.8 miles south-east) and The Coronet pub (under half a mile south-east). The closest station to Holloway is Drayton Park station, roughly 0.6 miles south-east of the centre. Well-known places in the area include Brunswick Centre (2.3 miles south) and Montfichet's Tower (3.1 miles south). Open spaces near Holloway include St. James's Park Lake and Dartmouth Park Hill.