Greater London · London and the South East
Dartmouth Park Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes around Dartmouth Park, with findings in writing and pictures to back them up. Weekday and weekend visits available.
- New membranes needing a check before handover
- Leaks showing away from the breach
- Leaks at pipes, outlets or fixings
What we do, step by step
Safety comes first on every visit. Everything that can be seen safely is inspected, and anything we cannot see is noted in the report. The survey normally takes a length of time set by the size of the roof and how it’s built, and we’ll give you a guide when quoting. London terraces rarely offer a view of the whole roof from one spot, so in Dartmouth Park we work round the house, using the street, the windows, the loft and any safe vantage point behind it. Shared stairs or a basement flat? Tell us who holds the keys.
- We start with what you know about the roof and the leak.
- We check whether the membrane and build-up suit ELD.
- The test method is chosen to suit the roof.
- The membrane is tested and breaches are found.
- A report with photographs shows where each breach is.
Preparing for the visit
- If the roof is shared, arrange access with whoever manages the building
- Make a note of anything you’d like us to look at
- Let us know about parking before the day
How to book
For a price for electronic leak detection in Dartmouth Park, call 07833 053749 or send us an email. A few details about the property and the roof help us give you an accurate price.
Related advice
About our electronic leak detection in Dartmouth Park
A leak in a flat roof frequently shows up a long way from where the water gets in. That makes leaks hard to trace by eye. Electronic leak detection tests the membrane itself and locates the breach. We test and report and leave the repair to your roofer. On a suitable roof, it takes the guesswork out of finding the hole. We then send you the results in a written report. We survey commercial flat roofs, green roofs and roof terraces and balconies, and common reasons people get in touch are water coming in under a flat roof and failed seams and laps.
Across London, flat roofs are everywhere, from back additions and dormers to roof terraces, blocks of flats and offices. They’re covered in felt, asphalt, EPDM rubber, GRP fibreglass or single-ply membranes, each with its own weak points. Which one is on a roof in Dartmouth Park shapes how it is checked. Many older flat roofs are felt or asphalt, and many newer ones EPDM rubber or GRP.
The report works through the roof section by section, from the coverings down to the gutters. It records what’s sound as well as what isn’t.
- Place
- Dartmouth Park (NW5, N19, N7)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Report
- A written report with photos, by email
- When we survey
- Weekdays and weekends
- Insured
- Professional indemnity and public liability
- Call
- 07833 053749
- Last updated
- 27 October 2026
Electronic leak detection around Dartmouth Park
Witanhurst, about 0.8 miles north-west, is one of the historic houses in the wider area around Dartmouth Park. If yours is one of the older homes, expect a mix of original materials and later repairs on the roof, and any change of roofing material on a listed home needs checking with the council first. Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. From the street you may see only a parapet, with a butterfly roof and a valley gutter behind it draining to the back. If your home in Dartmouth Park is one of them, lead flashings, party-wall upstands and shared chimney stacks are part of the picture too. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises.
For a London address like Dartmouth Park, it helps to know about controlled parking before the day. If you own a rental within reach of Gospel Oak station, a flat roof over a rented flat is easy to forget until the tenant reports a leak.
Dartmouth Park is about 2 miles east of Hampstead, in Greater London. Dartmouth Park is part of the area we cover across London and South East England. We cover towns and villages across Greater London, from the larger towns to small villages.
Surveys in NW5, N19 and N7 work the same way as everywhere else we cover. That includes homes and businesses on Hugo Road, Ward Road and Anson Road and the roads around them. If you’re just outside Dartmouth Park, we cover Lissenden Gardens (1 mile south-west), Tufnell Park (1 mile east), Gospel Oak (1 mile south-west), Upper Holloway (1 mile north-east) and Highgate (1 mile north). Within a short drive, we also cover London (5 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south), Kensington (5 miles south-west), St Pancras (3 miles south-east) and Shoreditch (4 miles south-east).
Landmarks near Dartmouth Park
Around Dartmouth Park, our work takes us to homes and buildings near The Dartmouth Arms, Whittington Park and Brookfield Primary School and the streets around them. Nearby too are Asanté Academy of Chinese Medicine (1.4 miles north) and Vaughan Williams Memorial Library (1.5 miles south). Dartmouth Park’s nearest station is Gospel Oak station, roughly 0.5 miles south-west of the centre. A little further out are O2 Centre (1.8 miles south-west) and Isokon Gallery (1 mile south-west). Not far away are Belsize Wood and Dartmouth Park Hill.
What affects the cost of electronic leak detection
A few things affect what a survey costs:
- Extensions, dormers and garages with roofs of their own
- The use of thermal imaging or a drone
- How tall the building is and how easy the roof is to see
- House, block, shop or office
All our prices include VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. You’ll know the price for the job before booking.
What we need to know
Getting the details right at the start saves time. Please include:
- The style of property, from a terrace to a block
- What made you get in touch
- Your timetable, like an exchange date
- The property’s address and postcode
If you’re buying, it helps to book soon after your offer is accepted, so you have the findings in time to act on them before you exchange. Otherwise, simply call 07833 053749 or send us an email whenever suits you.
Should I look at the roof myself first?
The one thing to avoid is getting up close. Roofs are fragile and slippery, and falls from height are serious. That part is for a survey, using safe viewpoints and a drone where it applies.
You can learn a lot from ground level. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Please do not climb up for a closer look.
What we are asked to look at in Dartmouth Park
Seams are a common weak point in flat roof waterproofing. Small openings at laps can leak long before anyone notices.
Here are some of the things we see frequently:
- Patched roofs that still leak
- New membranes needing a check before handover
- Leaks at pipes, outlets or fixings
- Damp inside with no sign on the roof
If you look after a building such as Acland Burghley School, ponding and blocked outlets on a wide flat roof are worth catching before the next wet season.
Choosing a roof surveyor
- What they won’t be able to tell you
- What follow-up you get after the report
- Whether the inside of the roof is included
- Whether VAT is in the quoted price
Different roofs, different checks
Bituminous membranes
Bituminous felt and modified bitumen membranes are common. Whether ELD suits them depends on the build-up.
Single-ply membranes
Some single-ply membranes suit electronic testing well but it depends on the product and layers.
FAQs for Dartmouth Park
Do you cover Dartmouth Park?
Yes, Dartmouth Park is one of the places we work. Every survey there gets the same written report with photos.
Is parking a problem for a survey in Dartmouth Park?
Parking in Dartmouth Park, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when booking.
Does someone need to be in?
Not necessarily. If we only need the outside, we can agree that ahead of time, but anything inside needs someone there to give access.
What insurance do you have?
Our surveys are covered by professional indemnity and public liability insurance. If you need details for a managing agent or a building owner, just ask.
Is this a RICS survey?
No. We check the roof, not the whole building, and it isn’t a RICS Level 2 or Level 3 survey. It can sit alongside a RICS survey if you want both.
Do you test for asbestos?
No. Asbestos surveys and sampling aren’t something we do. Where a material might contain it, such as old cement sheets on a building from before 2000, the report flags it.
Do you use drones?
Yes, where it is applicable. We hold a CAA Flyer ID and Operator ID and fly a drone under 250g, and every flight depends on the airspace and the weather.
Towns and villages near Dartmouth Park
What else we do in Dartmouth Park
Practical tips
Nothing here needs a ladder. Our suggestions:
- Check new waterproofing before handover
- Clear flat roof outlets regularly
- Use boards when working on the roof
- Note where leaks show inside and when
File the report with your roof paperwork. It shows the condition of the membrane on that date.
Make sure contractors protect the waterproofing when fitting equipment. Have the roof looked at after other work.