Greater London · London and the South East
Electronic Leak Detection in Islington
Electronic leak detection across Islington, with over 20 years’ experience behind it. You get a clear report with photos.
- Leaks showing away from the breach
- New membranes needing a check before handover
- Leaking laps in the waterproofing
Electronic leak detection in Islington
ELD can be carried out in more than one way. Low-voltage methods usually need a wet roof surface 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 explain which we’ll use. We’ll say if your roof does not suit either method before any testing starts. We are frequently asked to look into leaks that return after repairs and breaches around outlets and penetrations, on liquid-applied waterproofing, roof terraces and balconies and single-ply roofs.
On a London roof terrace or a flat roof over a back addition, water frequently runs under the covering before it shows. Outlets, upstands against parapet walls and joins with the main roof are frequent culprits. In a converted house in Islington, the roof above may belong to the building rather than one flat.
We keep jargon out of it: where something needs attention, it says so plainly, along with how urgent it is.
- Location
- Islington (N1, N7, NW1, EC1V)
- Wider area
- Greater London
- Price
- Quoted for your roof
- Report
- A written report with photos, by email
- Survey days
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Updated
- 27 October 2026
How the survey changes by roof type
Bituminous membranes
Older felt roofs often have seams and patches where breaches occur. We test where the roof suits it.
Liquid-applied waterproofing
Liquid-applied coatings form a seamless layer, but can still have thin spots or holes. Suitability for ELD depends on the system.
Nearby places to Islington
More services for Islington
Signs you need electronic leak detection in Islington
When the membrane is buried, holes cannot be seen at all. ELD can work on some covered roofs, depending on the build-up.
Signs worth acting on include:
- Failed seams and laps
- Leaks through a covered membrane
- Damp inside with no sign on the roof
- Leaks that return after repairs
Historic houses such as Dr Johnson's House, about 1.6 miles south, show how far back building around Islington goes. If your home is older, its flat-roofed extension or dormer may be on its second or third covering.
Choosing a roof surveyor
- Which viewpoints they use to see the roof
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
- What happens after the report arrives
- Will they check the loft as well as the outside?
What happens on the day
It’s useful to start with what’s prompted the survey: buying, a leak, storm damage, new work or just wanting to know where things stand. That way we can focus on what matters to you. Most visits take a time that depends on the roof’s area and construction, and we’ll give you a guide when quoting. Surveys in Islington can be booked for any day of the week. London parking is often by permit or pay-and-display, so it is useful to know what’s near you. A back bedroom window can be the best vantage point for a rear addition, so we may ask to use one.
- First, we confirm which roof areas are included.
- The surface is prepared for the chosen method.
- We work across the roof with the test equipment.
- We mark the breach locations in our records.
- The report is sent for your roofer to act on.
How to prepare
- Keep pets in another room
- Let us know about parking before the day
- Note where any stains or damp appear
How to book
If you are buying, it’s useful to book soon after your offer is accepted, so you have the findings in time to act on them before you exchange. For any other survey, just call 07833 053749 or send us an email when you’re ready.
Advice
Local flat roofs in Islington
There are several hotels within about a mile and a half of Islington. If you look after one, a leak through a flat roof can put a room out of use. Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. A butterfly roof with a central valley gutter, tucked behind a parapet wall, is common on these houses. Shared chimney stacks, party-wall upstands and lead work come with this kind of house. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
A roof leak in a hotel or guest house around Islington means lost rooms as well as repairs, so it pays to find faults before guests do. Landlords with a home close to Essex Road station may find that a flat roof over a rented flat is easy to forget until the tenant reports a leak.
Islington is about 3 miles north-east of City of Westminster, in Greater London. Islington is part of the area we cover as part of our work across London and the South East. We cover towns and villages across Greater London.
Every address in N1, N7, NW1 and EC1V is covered for electronic leak detection. We offer electronic leak detection to properties on Gibson Square, Old Royal Free Square and Cloudesley Square. With the B515 and A5203 close by, Islington is simple for us to get to. Close by, we survey roofs in Pentonville (1 mile south), Angel (1 mile south), Barnsbury (1 mile north-west), Clerkenwell (1 mile south) and Lower Holloway (1 mile north-west). Further out, we also cover London (3 miles south), City of Westminster (3 miles south-west), Kensington (5 miles south-west), Walthamstow (5 miles north-east), Hampstead (3 miles west) and Ruislip (13 miles west).
Landmarks near Islington
Around Islington, our work takes us to homes and buildings near Islington Green School, The King's Head Public House and Pilsudski Institute of London, among other places. You will also find Barnard Park (under half a mile south-west) and St Mary's CofE Primary School (under half a mile east). Islington has its own railway station: Essex Road station. Well-known places in the area include King's College Hospital Charity (0.7 miles north-west) and Montfichet's Tower (1.7 miles south). Not far away are Barnsbury Wood and Ludgate Hill.
Honest limits
No survey can tell you everything, and we’d rather be clear about that before booking. Bear these in mind:
- Build-ups without a suitable layer below
- Repairing the breaches (that is for your roofer)
- Water entering through details rather than the membrane
If you are not sure which survey you need, call 07833 053749 or email us and we’ll give you a straight answer. The full list of what we check.
Roofs we survey in Islington
- Green roofs
- Roof terraces and balconies
- Commercial flat roofs
- Single-ply roofs
- Flat roof membranes
- Liquid-applied waterproofing
Before and after the survey
Some practical points come up on survey after survey. They’re worth knowing whatever the roof:
- Act on new leaks promptly
- Ask contractors to protect the membrane
- Do not let outlets block
- Stay off the flat roof unless needed
If water has been getting in, insulation under the membrane may be wet. That’s something to discuss with your roofer, and moisture readings can help.
Limit foot traffic on flat roofs. Many breaches come from foot traffic.
For landlords and managing agents
Shared roofs need a little more planning: access has to be agreed with whoever owns or manages the building. Tell us about it when booking and we’ll plan the survey around it.
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, which helps when budgeting.
Your questions about electronic leak detection in Islington
Do you cover commercial flat roofs around Islington?
Yes, commercial flat roofs are part of what we cover. For a bigger roof, you’ll get a quote based on the building.
Can parking be tricky for a visit in Islington?
Typically it’s manageable with a little notice. Let us know the parking rules on your street and we will work around them.
Which days do you carry out surveys?
We survey on any day from Monday to Sunday, during the day, which suits people who work during the week. Let us know your preferred days when booking.
How is ELD priced?
We quote for each roof individually. Send us details of the roof. Just ring 07833 053749 or use the contact form for a quote.
Is it the same as a RICS Level 2 or Level 3 survey?
No. Our survey looks at the roof, not the whole building. If you need a full building survey, you will need a RICS survey as well.
Can you tell me if my roof has asbestos?
No. Asbestos surveys and sampling aren’t something we do. The report may flag materials that could contain asbestos on buildings built or refurbished before 2000.
What will the report tell me?
You get our findings in writing, part by part, with photos, finishing with recommendations. The most urgent items are made clear.