Greater London · London and the South East
Crews Hill Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes in Crews Hill, carried out by an experienced roof surveyor. You get a clear written report with photographs.
- Damage from equipment installers
- Patched roofs that still leak
- Leaks through a flat roof with no obvious cause
Signs you need electronic leak detection in Crews Hill
Repeated leaks after repairs suggest the real breach hasn’t been found. ELD can locate the breach more precisely.
These are some of the problems a survey can pick up:
- Damage from equipment installers
- Waterproofing to test before it is covered
- Gaps at membrane joints
- Holes around roof penetrations
If you own a rental within reach of Crews Hill station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Before booking anyone
- Which viewpoints they use to see the roof
- What insurance they carry
- What experience they bring
- Whether VAT is in the quoted price
Electronic leak detection for homes and businesses in Crews Hill
ELD can be carried out in more than one way. Low-voltage testing is usually done with the surface wet, while high-voltage testing needs a dry, exposed membrane. Which one suits depends on the membrane and the layers of the roof and we explain which we’ll use. We will say if your roof doesn’t suit either method before any testing starts. We’re frequently asked to look into gaps at membrane joints and leaks showing away from the breach, across commercial flat roofs, green roofs and roof terraces and balconies.
Water getting through a flat roof in London can travel under the covering and appear some way from the hole. Outlets, upstands against parapet walls and joins with the main roof are frequent culprits. In a block or conversion in Crews Hill, the flat roof is often a shared part of the building.
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.
- Place
- Crews Hill (EN2)
- Region
- Greater London
- Prices
- Quoted for your roof
- Your report
- A written report with photos, by email
- Appointments
- Weekdays, Saturdays and Sundays
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
The survey, step by step
A survey visit follows a simple order: we listen to what’s been worrying you, inspect the roof from each safe vantage point, photograph what we find and record our findings for the written report. Most visits take more time on a big roof than a small one, with the construction of the roof playing a part too. In a London area like Crews Hill, the main things to sort out are parking and access: let us know about parking, the floor the property is on, any shared entrance and loft access. We then look at everything that’s safely in view from the ground, windows, the loft and, where it is safe, the roof itself.
- We start with what you know about the roof and the leak.
- The roof is assessed for suitability first.
- The test method is chosen to suit the roof.
- The membrane is tested and breaches are found.
- You get a report with photos of each breach.
Before the survey
- For flats, make sure roof access has been agreed
- Keep pets inside or away from the areas we’re looking at
- Make sure we can get to the back of the property
Getting a price
Photos help, if you have them. Take them safely from the ground or a window, and please do not climb up for a closer look. To get started, ring 07833 053749 or drop us an email.
Related advice
Tips from our surveys
Small things make a difference, both for the survey and for the roof itself. Our tips:
- Don’t let outlets block
- Record dates and spots where water appears
- Check trades protect the waterproofing
- Get leaks traced quickly
After your roofer repairs the breaches, a retest can confirm them, where the roof still suits the method.
ELD before paving, ballast or planting goes on is worth considering. Finding breaches is simpler at that stage.
Towns and villages near Crews Hill
More services for Crews Hill
Roof by roof
Bituminous membranes
Bituminous felt and modified bitumen membranes are common. The build-up decides which method will work.
EPDM rubber roofs
ELD on EPDM depends on the product and the layers. We check this first.
Prices for electronic leak detection in Crews Hill
A few things affect what a survey costs:
- Commercial roofs and larger buildings
- The number of roofs, including extensions and garages
- The roof’s overall size
- Height and safe access
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 safely it can be seen. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Helping us price your survey
Some details help us suggest the right survey and price. When you contact us, let us know:
- The kind of building and roof involved
- Where the property is, with the postcode
- Any photos you have, taken from ground level or a window
- Access details, such as a loft hatch or a shared roof
To book a survey, call 07833 053749 or email us with the address and what you’d like to know about the roof. We will confirm the price before you book.
Checking the roof from ground level
Look up at the roof after a storm, from the ground: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Leave anything above ground level to a survey.
After heavy rain, check ceilings and the tops of walls for new stains. Photograph them and note the date.
Crews Hill: your questions answered
Is parking a problem for a survey in Crews Hill?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Is my home in Crews Hill listed or in a conservation area?
For listing, use Historic England’s list; for conservation areas, ask the council. It matters most if you are planning to re-roof in a different material.
Can you give me structural calculations?
No. We note visible signs such as sagging or deflection, but we are not structural engineers and don’t carry out calculations. If we think you need an engineer, the report says so.
Which method do you use?
The method is chosen to suit the roof. Low-voltage testing normally needs a wet surface, while high-voltage testing needs a dry, exposed membrane.
What happens after the survey?
The report comes by email, and what you do next is up to you: raise it with a seller, send it to an insurer, brief a roofer or share it with a managing agent.
Will I get photos?
Yes. Photos are part of every report.
How much does electronic leak detection cost?
We quote electronic leak detection for each roof, as the method and time depend on the roof. The price depends on the roof’s size and build-up. To get a quote, ring 07833 053749 or email us.
Local flat roofs in Crews Hill
About 1.5 miles south-east lies Forty Hall, a reminder of how long the area around Crews Hill has been built on. On older houses around here, roofs frequently carry the marks of earlier repairs, from replaced slates to new lead. Alongside Victorian and Edwardian terraces, outer London has a great many interwar semis, often with hipped roofs of clay or concrete tiles. Bay roofs, hip ridges and dormers from later loft conversions are the details that set these houses apart. Mixed in with those pitched roofs are a good many flat ones, over rear extensions, dormers, garages and shops.
Crews Hill is in London, so parking needs planning: tell us about permits, visitor bays or off-street space as you book. For an older house near a landmark like Church of St John the Baptist, later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear.
Crews Hill is about 3 miles south-west of Cheshunt, in Greater London. If you are in Crews Hill, booking works exactly as it does anywhere else: get in touch, agree the price and pick a day. We cover towns and villages across Greater London. There is also a page for London.
All of EN2 is within our area for electronic leak detection, from the main roads to the quietest streets. We offer electronic leak detection to properties on Rosewood Drive, Theobalds Park Road and Whitewebbs Road and the roads around them. Neighbouring places we cover for electronic leak detection include Clay Hill (1 mile south-east), Gordon Hill (1 mile south-east), Bulls Cross (2 miles east), Forty Hill (2 miles south-east) and Enfield Chase (2 miles south). Within a short drive, we also cover London (13 miles south), City of Westminster (12 miles south), Marylebone (11 miles south), Kensington (13 miles south), St Pancras (11 miles south) and Shoreditch (11 miles south).
Near you in Crews Hill
Typical jobs here are in homes near Chace Community School and The Plough pub. There’s a railway station in Crews Hill itself: Crews Hill station. A little further out are Chase Farm Hospital (1 mile south) and Museum of Enfield (2.3 miles south). Not far away are Fir and Pond Woods and Bowyer's Water.