Greater London · London and the South East
Kensal Green Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes for Kensal Green and the rest of Greater London. Surveys run on weekdays and at weekends.
- New roofs to check before paving or planting
- Leaking laps in the waterproofing
- Punctures from foot traffic or tools
About our electronic leak detection in Kensal Green
ELD finds breaches in the membrane, not every cause of water getting in. Water coming through walls, copings, rooflights or plumbing won’t show on the test. If the evidence points elsewhere, we’ll say so. It won’t show water getting in through brickwork or around frames. Our report keeps that distinction clear. You’ll also know what to check next. If you’ve noticed holes around roof penetrations and leaks under green or ballasted roofs, we can find out what’s behind it, whatever the roof.
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 Kensal Green, access is agreed with whoever manages the roof before the visit. Plant bases, rooflights and cable entries are all places where water can get in.
We write the report in plain English, so you don’t need to be a roofer to follow it. Photographs show what each point refers to, with the urgent items made clear.
- Where
- Kensal Green (NW10, W10, NW6)
- Region
- Greater London
- Prices
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- When we survey
- Weekdays, Saturdays and Sundays
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Common questions in Kensal Green
Can parking be tricky for a visit in Kensal Green?
Normally it is manageable with a little notice. Tell us what parking is available nearby, and the visit is planned around it.
Do you cover commercial flat roofs around Kensal Green?
Yes, commercial buildings, hotels included, are part of the work. Roof access is agreed with the building manager or owner beforehand.
How experienced are you?
We have completed more than 5,000 surveys, over more than 20 years.
Is the repair part of the test?
No. ELD is testing only. The report shows where each breach is so your roofer can fix them.
Do you need to get into the loft?
Yes, where the survey calls for it and there is safe access. We look for staining, damp, daylight and signs of movement, as far as the space allows.
How long does electronic leak detection take?
It usually takes more time on a big roof than a small one, with the construction of the roof playing a part too.
Do I have to be there for the survey?
If the survey includes the loft or the inside of the building, someone needs to let us in. Access is agreed with you as you book.
What electronic leak detection does not cover
Before you book, it is worth knowing what a survey won’t do:
- Carrying out the repair work
- Sections we cannot safely access
- The extent of water in the insulation
If in doubt, call 07833 053749 or drop us an email and we’ll point you to the right survey. What our survey covers.
Roof types and parts we check
- Liquid-applied waterproofing
- Single-ply roofs
- Green roofs
- Commercial flat roofs
- Flat roof membranes
- Roof terraces and balconies
Tips from our surveys
Most of what helps is simple and safe from ground level. A few suggestions:
- Do not keep patching the same spot
- Check trades protect the waterproofing
- Have roof specifications to hand
- Clear flat roof outlets regularly
Keep the report with the roof’s records. It shows the condition of the membrane on that date.
ELD before paving, ballast or planting goes on is worth considering. It is easier to find holes before more layers are added.
Local flat roofs in Kensal Green
Kensal Green has a number of hotels within about a mile and a half, and hotels, like offices and blocks of flats, often have flat roofs. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use. Many homes in inner London are Victorian and Edwardian terraces, often with Welsh slate roofs. A butterfly roof with a central valley gutter, tucked behind a parapet wall, is common on these houses. Lead flashings, party-wall upstands and shared chimney stacks are typical of these houses, if yours is one of them. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
For site and facilities teams at buildings like Princess Frederica CofE Primary School, ponding and blocked outlets on a wide flat roof are worth catching before the next wet season. With Kensington Palace about 2.4 miles south-east, the area around Kensal Green has a long history. Older homes nearby may have later flat-roofed extensions or dormers, often re-covered more than once.
Kensal Green is about 1 mile south-west of Kilburn, in Greater London. We carry out electronic leak detection in Kensal Green for houses, flats, blocks and commercial buildings. Kensal Green is one of the towns and villages in Greater London where we work for electronic leak detection. Our London page covers surveys nearby.
Every address in NW10, W10 and NW6 is within our area for electronic leak detection, from the main roads to the quietest streets. Local streets include Waldo Road, Hazel Road and Hiley Road, all of which we cover. If you’re just outside Kensal Green, we cover Kensal Rise (1 mile east), College Park (1 mile west), North Kensington (1 mile south-east), Willesden Green (1 mile north) and Kensal Town (1 mile south-east). Larger places within reach include London (6 miles east), City of Westminster (3 miles east), Marylebone (3 miles east), St Pancras (5 miles east), Shoreditch (6 miles east) and Walthamstow (9 miles north-east).
Near you in Kensal Green
We work in homes and buildings around Little Wormwood Scrubs, Queens Park Community School and The Masons Arms, among other places. Kensal Green has its own railway station: Kensal Green station. Nearby you will also find Westfield London (1.6 miles south) and Princess Louise Hospital (0.7 miles south). Open spaces near Kensal Green include Greville Place nature reserve and The Long Water.
Can I check my roof myself?
If you have a loft with safe access, take a look inside. Take a torch and only step on boards or joists, checking for stains, damp wood or chinks of daylight.
During heavy rain, look at the gutters from the ground or a window. Water spilling over the edge can point to a blockage or a sagging run.
Common roof problems in Kensal Green
Flat roof membranes can be punctured by foot traffic, dropped tools or debris. Some are too small to see but water still finds them.
Problems we come across frequently include:
- New membranes needing a check before handover
- Stains far from any visible defect
- Leaks that return after repairs
- Leaks through a flat roof with no obvious cause
For landlords with property near Kensal Green station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
What to check before booking
- How they plan to inspect the roof safely
- What insurance they carry
- What’s outside the scope of the survey
- Is VAT included in the price?
Places near Kensal Green
Also in Kensal Green
Landlords, agents and block managers in Kensal Green
We also survey roofs for businesses and commercial landlords, including offices, shops and units. Bigger roofs take more time, so they’re priced to suit.
Shared roofs need a little more planning: we need access agreed with the freeholder or managing agent. Mention it when you contact us and we will plan the survey around it.
The survey, step by step
We work from the outside in: first the slopes, edges and gutters from every safe viewpoint, then the loft space where it can be reached. In total, it takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. From the street, a London terrace typically shows only its front slope or parapet, so a visit in Kensal Green moves between viewpoints: the pavement, upstairs windows, the loft and any safe spot at the back. If other people live in the building, tell us who can let us into the shared parts.
- We ask about the roof, its age, its membrane and where leaks appear inside.
- The roof is assessed to see if electronic testing will work on it.
- The testing method is chosen to suit the membrane and build-up.
- The roof is tested and any breaches are located.
- The breaches are recorded with photos in a report for your roofer.
Getting ready for the survey
- For flats, make sure roof access has been agreed
- Clear the way to the loft hatch
- Have any paperwork from past roof work to hand
Arrange a survey
Photos help, if you have them. Pictures from ground level or a window are fine; never climb up to get a better view. To get started, call 07833 053749 or send us an email.