Greater London · London and the South East
St Pancras Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes around St Pancras, with a written report you can act on. Book a weekday or weekend visit.
- Damp inside with no sign on the roof
- Leaks under green or ballasted roofs
- Patched roofs that still leak
How it works
The visit normally starts outside and finishes in the loft: outside views come first, then the roof space if there’s safe access. In total, it takes a length of time set by the size of the roof and how it’s built, which we set out in the quote. London terraces rarely offer a view of the whole roof from one spot, so a visit in St Pancras moves between viewpoints: the pavement, upstairs windows, the loft and any safe spot at the back. Shared stairs or a basement flat? Tell us who holds the keys.
- 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.
- Each breach found is located and recorded.
- 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
- Check pets are kept safely away
- Make a note of anything you’d like us to look at
Booking a survey
For a price for electronic leak detection in St Pancras, call 07833 053749 or send us an email. The address, the type of property and what you need to know help us price the survey accurately.
Related advice
How electronic leak detection works in St Pancras
You get a report showing the location of each breach, with photos. Your roofer can then repair those points instead of hunting for the leak. Repair costs are not part of the report, so your roofer prices the work. A retest after repairs can check the work, where the roof still suits the method. You get a photo-illustrated written report. We survey flat roof membranes, commercial flat roofs and liquid-applied waterproofing, and the problems we are asked to look at most are gaps at membrane joints and damage from equipment installers.
Commercial and residential blocks across London often 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 St Pancras, access is agreed with whoever manages the roof ahead of the visit. Rooflights, plant supports and pipe entries are common places for a membrane to fail.
The report is yours to share with whoever needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent.
- Where
- St Pancras (NW1W, W1T, N1)
- Wider area
- Greater London
- Price
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- Appointments
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Checking the roof from ground level
The one thing to avoid is getting up close. Roofs are fragile and slippery. That’s where a survey comes in, using safe viewpoints and a drone where applicable.
After heavy rain, check ceilings and the tops of walls for new stains. Photograph them and note the date.
What electronic leak detection does not cover
This isn’t a RICS building survey, a structural engineer’s report or an asbestos survey. It also has these limits:
- Sections we cannot safely access
- Repairing the breaches (that’s for your roofer)
- Build-ups without a suitable layer below
If in doubt, call 07833 053749 or send us an email and we will recommend the right survey before you book. What our survey covers.
Roof types and parts we check
- Flat roof membranes
- Commercial flat roofs
- Roof terraces and balconies
- Green roofs
- Liquid-applied waterproofing
- Single-ply roofs
How we price electronic leak detection
Several things affect the price of a survey:
- Commercial roofs and larger buildings
- How complicated the roof is, with its valleys, chimneys and parapets
- The roof’s overall size
- Extensions, dormers and garages with roofs of their own
Larger roofs, taller buildings and commercial roofs take longer, so they’re priced to match. The price is confirmed before you book.
Booking your survey
We’ll normally ask about:
- Any deadline, such as an exchange date
- The address and postcode of the property
- Access details, like a loft hatch or a shared roof
- Why you want a survey: buying, a leak, a storm or new work
Surveys can be booked for weekdays, Saturdays or Sundays. To find a date that works for you, ring 07833 053749 or drop us an email with the address and the days you’d prefer.
How the survey changes by roof type
EPDM rubber roofs
EPDM is a long-lasting flat roof membrane, but punctures and seam failures still happen.
Bituminous membranes
Older felt roofs frequently have seams and patches that can leak. We test where the roof suits it.
Landlord and commercial surveys in St Pancras
Letting agents frequently book on a landlord’s behalf, and the report can go to both. We agree a time with the tenant beforehand.
Roof problems in a rented home affect tenants as well as the building. A survey shows what needs attention, so you can plan the work around your tenants.
Flat roofs in St Pancras
Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. Behind many of their parapets sit butterfly roofs and valley gutters that can’t be seen from the pavement. In a house like that, shared stacks, party-wall upstands and lead flashings all need looking at as far as they can be seen. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere. With Dr Johnson's House about 0.9 miles south-east, St Pancras sits in an area with a long building history. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead.
A roof leak in a hotel or guest house around St Pancras means lost rooms as well as repairs, so it pays to find faults before guests do. If you live in an older home near Lumen United Reformed Church, the joins between later flat roofs and the old walls are where problems typically start. For landlords with property near London Kings Cross station, a flat roof over a rented flat is easy to forget until the tenant reports a leak.
St Pancras is about 2 miles north-west of London, in Greater London. We carry out electronic leak detection for householders, landlords and businesses in St Pancras and nearby. Across Greater London, we cover St Pancras and the places around it.
All of NW1W, W1T and N1 is within our area for electronic leak detection. We cover properties on Shoe Lane, Long Lane and City Road. Being close to the A4 and A40, St Pancras is easy for us to reach. Other places close to St Pancras include Bloomsbury (1 mile south-west), Kings Cross (1 mile north-west), Holborn (1 mile south-east), Clerkenwell (1 mile east) and Angel (1 mile north-east). Larger places within reach include Kensington (4 miles south-west), Walthamstow (6 miles north-east), Hampstead (3 miles north-west), Ruislip (13 miles west), Brompton (3 miles south-west) and Stockwell (4 miles south). As one of the bigger places in Greater London, St Pancras has homes, rented property and businesses of every kind.
Around St Pancras
Typical jobs here are in homes near Lincoln's Inn Fields, City Academy and Elizabeth Garrett Anderson School and the streets around them. Nearby too are Pilsudski Institute of London (less than half a mile south-west) and Calthorpe Arms Public House (less than half a mile south-east). The closest station to St Pancras is London Kings Cross station, about 0.5 miles north-west of the centre. Other landmarks nearby include Montfichet's Tower (1.1 miles south-east) and Royal National Throat (under half a mile north). Not far away are Barnsbury Wood and Ludgate Hill.
St Pancras: your questions answered
Is my home in St Pancras 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.
Can parking be tricky for a visit in St Pancras?
Sometimes, yes. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
Do you climb onto every roof?
Not always. Safety comes first, and fragile or steep roofs cannot always be walked on. We use safe viewpoints, the loft space and a drone where applicable.
Does the report include photographs?
Yes, plenty. Pictures sit next to the findings they show, so you can see what we mean.
Which days do you carry out surveys?
We survey seven days a week: weekdays, Saturdays and Sundays. Just let us know the days that suit you.
Which method do you use?
It depends on the membrane and the build-up. Low-voltage methods are typically carried out on a wet roof, while high-voltage testing needs a dry, exposed membrane.
Is my roof suitable for ELD?
ELD does not suit every roof. Certain membranes are conductive, and some build-ups lack a suitable layer below. If your roof will not work, we’ll say so before testing.