Greater London · London and the South East
Hendon Electronic Leak Detection
Find out the condition of the flat roof membrane at your property in Hendon. We visit on weekdays and at weekends.
- New roofs to check before paving or planting
- Leaks that return after repairs
- Leaks showing away from the breach
About our electronic leak detection in Hendon
ELD suits many waterproofing membranes on flat roofs over offices, units, blocks of flats and homes. It helps trace a leak you already have or to test a new membrane before it is covered. Each roof is quoted on its size and build-up. We can test on weekdays and at weekends when conditions allow. Tell us about your roof to find out more. We are often asked to look into damage from equipment installers and leaks at pipes, outlets or fixings, on flat roof membranes, single-ply roofs and commercial flat 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 Hendon, the roof above may belong to the building rather than one flat.
You can share the report with anyone who needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent, whichever applies.
- Place
- Hendon (NW4, NW9, NW2, NW11)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Your report
- A written report with photos, by email
- Appointments
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Rented homes, blocks and businesses
Surveys can also be booked by buyers’ agents acting for a client. Reports are emailed, so they’re easy to pass on.
Businesses and commercial landlords can book us too. Larger roofs take longer.
What happens if roof problems are left?
Leaks left running can wet the insulation and deck. Locating it early helps limit the damage. London’s older roofs frequently have bitumen felt underlay or none at all, so a slipped slate can soon mean water inside. Left alone, that means wet timbers and plaster, which is a far bigger job than the roof fault itself.
What a survey costs comes down to the roof itself: how big it is, how high it is, the number of separate roofs and how it can be reached and seen safely. We quote electronic leak detection for each roof, as the method and time depend on the roof.
Why choose Independent Roof Survey in Hendon
- Satisfaction rate of 98%
- Surveys seven days a week
- More than 20 years surveying roofs
- An independent look at the roof
Read how roof surveys are priced and two real surveys.
Should I look at the roof myself first?
A lot can be seen from the ground. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Please don’t climb up for a closer look.
Fresh stains on ceilings or walls after rain are worth noting. Take a photo and write down when you saw it.
Common roof problems in Hendon
Seams are a common weak point in flat roof waterproofing. A gap that is hard to see can let water in for months before it shows.
A survey can pick up problems such as:
- Damp inside with no sign on the roof
- Holes left by work on the roof
- Repairs that haven’t stopped the leak
- Breaches around outlets and penetrations
For hotels and guest houses around Hendon, a roof problem found early is far less disruptive than one found by a guest, so it is worth knowing the roof’s condition.
Choosing a roof surveyor
- Whether the price includes VAT
- Do they have a CAA Flyer ID and Operator ID for drone work?
- Which parts of the roof they’ll actually see
- What follow-up you get after the report
The survey, step by step
We check the roof from outside and, where it’s relevant and there’s safe access, from inside the loft space too. Inside, we look for staining, damp, gaps and signs of movement. The whole visit usually takes more time on a big roof than a small one, with the construction of the roof playing a part too. In converted houses and mansion blocks, the loft hatch is frequently on a shared landing. Where that is the case, access needs agreeing with whoever controls that landing. Otherwise, the visit in Hendon runs like any other.
- We start with what you know about the roof and the leak.
- The roof is assessed for suitability first.
- We choose a low-voltage or high-voltage method to match the roof.
- We test the roof and locate any breaches.
- You get a report with photos of each breach.
Before the survey
- Keep pets out of the way during the survey
- Have any paperwork from past roof work to hand
- Make sure we can get to the back of the property
How to book
Getting a price is simple: just ring 07833 053749 or drop us an email and give us a few details about the property and we’ll explain which survey suits. The price is agreed up front.
Advice
Other services in Hendon
When you need someone else
It is useful to know what a survey won’t do before booking:
- Water entering through details rather than the membrane
- Roofs whose membrane or build-up isn’t suitable
- Carrying out the repair work
If you’re not sure which survey you need, call 07833 053749 or use the contact form and we’ll give you a straight answer before booking. The full list of what we check.
What we look at
- Flat roof membranes
- Commercial flat roofs
- Green roofs
- Liquid-applied waterproofing
- Single-ply roofs
- Roof terraces and balconies
Electronic leak detection in Hendon: local notes
The wider area around Hendon has a long history of building, with Heath Hall about 2.3 miles east. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and a listed home or one in a conservation area may need consent for changes of material. Within a mile and a half or so of Hendon there are several hotels. If you look after one, a leak through a flat roof can put a room out of use.
If you own a rental within reach of Hendon station, a flat roof over a rented flat is easy to forget until the tenant reports a leak. Anyone responsible for a site like Hendon School will know that large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Hendon is about 3 miles north-west of Hampstead, in Greater London. Hendon gets the same service as everywhere else we work: a careful inspection, photographs and a written report. Our Greater London coverage includes Hendon and the places around it. You can also see our page for London.
Electronic leak detection in NW4, NW9, NW2 and NW11 work the same way as everywhere else we cover. That includes homes and businesses on Church Road, Station Road and Sydney Grove. You will find Hendon on the A5 and A41, so it is easy for us to get to. Close by, we survey roofs in The Burroughs (1 mile north-west), Brent Cross (1 mile south), Staples Corner (1 mile south), West Hendon (1 mile west) and The Hyde (1 mile west). We also work in nearby towns like London (8 miles south-east), City of Westminster (6 miles south-east), Marylebone (6 miles south-east), Kensington (6 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles south-east).
Near you in Hendon
Around Hendon, our work takes us to homes and buildings near Hasmonean Primary School, The White Bear pub and Kisharon College. For rail, the closest station is Hendon station, about 0.7 miles south-west. Well-known places in the area include Brent Cross Shopping Centre (0.5 miles south) and St Andrew's Hospital (1.6 miles south). Green spaces nearby include Darland's Lake and Parliament Hill.
FAQs for Hendon
Can parking be tricky for a visit in Hendon?
London parking needs a little planning, so let us know about permits, bays or a driveway as you book. That way the visit can be planned around it.
Do you cover commercial flat roofs around Hendon?
Yes. As well as homes, we check flat roofs on offices, hotels, blocks of flats and commercial units. For a bigger roof, you will get a quote based on the building, and roof access is agreed with you before the visit.
Is this a RICS survey?
No. We are experienced roof surveyors, and our survey covers the roof rather than the whole building. For the rest of the building, a RICS home survey is a separate job.
When does the report arrive?
Each package has its own report time. Basic is within 48 hours, Standard is 24–48 hours and Premium is the same day. If you have a deadline, such as an exchange date, tell us when booking.
Do I have to be there for the survey?
Someone needs to let us in if we are looking inside or in the loft. Access is agreed with you when you book.
Do you need to get into the loft?
Yes, where the survey calls for it and there is safe access. Inside, we look for damp, staining, gaps and sagging, as far as the space allows.
Can you survey at the weekend?
Surveys run on weekdays, Saturdays and Sundays. To arrange a date, ring 07833 053749 or use the contact form.