Greater London · London and the South East
Electronic leak detection in Dollis Hill, Greater London
Independent electronic leak detection in Dollis Hill. More than 5,000 surveys completed across London and South East England.
- Damp inside with no sign on the roof
- Leaking laps in the waterproofing
- Breaches hidden under paving or planting
Electronic leak detection in Dollis Hill: what you get
Our ELD report shows where each breach was found, with photographs. It tells your roofer exactly where to repair rather than guessing. Repair costs are not part of the report, so your roofer prices the work. A retest after repairs can check the work if the build-up allows. Results come in a written report with photos. We’re often asked to look into damage from equipment installers and water coming in under a flat roof, on green roofs, commercial flat roofs and flat roof membranes.
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. In Dollis Hill, roof access is agreed with the building manager or owner beforehand. Rooflights, plant supports and pipe entries are common places for a membrane to fail.
If any part of the flat roof membrane couldn’t be seen safely, we say so in the report. You’ll know exactly what was inspected and what wasn’t.
- Location
- Dollis Hill (NW2, NW10, NW9)
- Region
- Greater London
- Price
- Quoted for your roof
- Your report
- A written report with photos, by email
- When we survey
- Monday to Sunday, daytime
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Flat roofs in Dollis Hill
In outer London, interwar semis with hipped, tiled roofs sit alongside older slate-roofed terraces. Bay roofs, hip ridges and dormers from later loft conversions are the details that set these houses apart. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere. Dollis Hill has a number of hotels within about a mile and a half. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use.
If you live in an older home near Church of St Michael, any flat roof added at the back or on a dormer is likely to be far younger, and less durable, than the main roof. Historic houses such as Heath House, about 2.3 miles east, show how far back building around Dollis Hill goes. If your home is older, its flat-roofed extension or dormer may be on its second or third covering. If you own a rental within reach of Brent Cross West station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Dollis Hill is about 1 mile north-east of Neasden, in Greater London. Dollis Hill is part of the area we cover and the surrounding area as part of our work across London and South East England. We cover towns and villages across Greater London. London is in our area too.
We work across NW2, NW10 and NW9 for electronic leak detection and the streets around it. Whether your property is on Brook Road, Lane Close and Crest Road or anywhere close by, we can survey it. We also cover Staples Corner (1 mile north-east), Neasden (1 mile south-west), Cricklewood (1 mile south-east), Willesden (1 mile south) and Brent Cross (1 mile north-east). We also work in nearby towns like London (7 miles south-east), City of Westminster (5 miles south-east), Marylebone (5 miles south-east), Kensington (5 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles east).
Around Dollis Hill
Locally, jobs take us to homes and businesses close to Woodfield School, The Crown Public House and Gladstone Park, among other places. Dollis Hill has its own railway station: Brent Cross West station. Other landmarks nearby include Brent Cross Shopping Centre (1 mile north-east) and St Andrew's Hospital (less than half a mile south). The countryside around Dollis Hill includes Darland's Lake and Parliament Hill.
Nearby places to Dollis Hill
What else we do in Dollis Hill
Why it’s worth a survey now in Dollis Hill
Repairs in the wrong place leave the leak in place. Testing shows where the membrane is actually breached. In a London terrace or conversion, a roof defect rarely stays your problem alone: failed flashings and blocked valley gutters can send water into more than one home. Finding it early keeps the work smaller.
For a price for your roof in Dollis Hill, call 07833 053749 or use the contact form with the address and a few details. We will confirm the figure before booking.
What you get with us
- 98% of customers satisfied
- Every finding written up with photos
- Over 20 years’ experience
- A sub-250g drone, flown with a CAA Flyer ID and Operator ID
Different roofs, different checks
EPDM rubber roofs
EPDM is a long-lasting flat roof membrane, but can still be punctured.
Green and ballasted roofs
Some layers may need lifting for testing. We explain what’s needed when we quote.
When you need someone else
In fairness, there are limits to any roof survey:
- The extent of water in the insulation
- Leaks from walls, copings or rooflights
- Build-ups without a suitable layer below
If in doubt, phone 07833 053749 or drop us an email and we’ll point you to the right survey. The full list of what we check.
Roofs we survey in Dollis Hill
- Flat roof membranes
- Single-ply roofs
- Liquid-applied waterproofing
- Commercial flat roofs
- Green roofs
- Roof terraces and balconies
For landlords and managing agents
If you own several properties, you can book surveys for several addresses. To arrange surveys for several addresses, ring 07833 053749 or send us an email.
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. Recommendations are set out with the most urgent first where relevant, which helps with budgets and planning.
How it works
Time on site depends on the size and shape of the roof; as a rough guide, the survey takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. If you have questions on the day, just ask. In converted houses and mansion blocks, the loft hatch is often on a shared landing. If that applies to your building, it helps to agree access with the neighbours or the managing agent first. Everything else is planned around the building, not the postcode.
- We start by finding out what the roof is made of and where it leaks.
- We check that the membrane and build-up suit electronic leak detection.
- We pick the low-voltage or high-voltage method that suits the roof.
- Testing runs across the roof to locate breaches in the membrane.
- You get a report showing where each breach is, for your roofer to repair.
Preparing for the visit
- Have any paperwork from past roof work to hand
- Jot down any questions you want answered
- Make sure the loft hatch can be reached
Booking a survey
Getting a price is simple: just call 07833 053749 or use the contact form, let us know about the property and we will explain which survey suits. We confirm the price before anything is booked.
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Questions from Dollis Hill
Do you cover commercial flat roofs around Dollis Hill?
Yes. As well as homes, we check flat roofs on offices, hotels, blocks of flats and commercial units. Larger commercial roofs are quoted for the building.
Can parking be tricky for a visit in Dollis Hill?
London parking needs a little planning, so let us know about permits, bays or a driveway when booking. The visit is then planned around what’s available.
Will you repair the leak?
No. We test the membrane and report. The report shows where each breach is so your roofer can fix them.
Do you survey on Saturdays and Sundays?
We carry out surveys on weekdays, Saturdays and Sundays. To arrange a date, phone 07833 053749 or drop us an email.
I live in a flat. Can you survey the roof?
Yes, as long as access is agreed. Roofs over flats are often shared, so the building owner or managing agent needs to agree access. We can only inspect what we are given access to.
Do you climb onto every roof?
Only where it is safe to do so. We inspect what can safely be seen: from the ground, from windows and vantage points, from the roof space, from the roof itself where safe and by drone where applicable. Anything we can’t see is noted in the report.
What’s the best way to book?
Just ring 07833 053749 or drop us an email with the address. After a few questions, we confirm the price and fix a day.
What you can safely check yourself
If you have a loft with safe access, take a look inside. Take a torch and only step on boards or joists, and look for staining, damp timber or daylight coming through.
After strong wind, take a look from the pavement or garden: pieces of tile or slate on the ground, a gap in the ridge or a lifted flashing are all worth noting. Don’t go up yourself.