Greater London · London and the South East
Electronic Leak Detection in North Cray
An experienced roof surveyor for electronic leak detection in North Cray. More than 20 years and over 5,000 surveys across London and South East England.
- Breaches hidden under paving or planting
- Failed seams and laps
- Punctures from foot traffic or tools
Electronic leak detection for homes and businesses in North Cray
Not every flat roof suits electronic testing. Some membranes conduct electricity themselves and some roofs do not have a suitable layer beneath the membrane. If your roof is not suitable, we’ll tell you before any testing. Telling us what you know about the roof’s membrane and layers helps, including drawings, specifications or the roofer’s paperwork. It saves a wasted visit. If you’ve noticed gaps at membrane joints and leaks through a covered membrane, we can find out what’s behind it.
Offices, shops and blocks of flats across London often have large flat roofs with plant, rooflights and walkways. Every penetration and upstand is a place where a membrane can fail. For a building in North Cray, access is agreed with whoever manages the roof ahead of the visit. Plant bases, rooflights and cable entries are all places where water can get in.
The report does not just list problems. It explains what we found, why it matters and what we recommend.
- Place
- North Cray (DA14)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Survey days
- Weekdays, Saturdays and Sundays
- Insured
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
What a survey costs
Not every roof costs the same to survey, for these reasons:
- Building height and the viewpoints available
- The shape of the roof and its details
- Whether it’s a home or a commercial building
- The use of thermal imaging or a drone
The cost of a survey depends on the roof: its size, its height, how many sections it has and how it can be reached and seen safely. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Helping us price your survey
Getting the details right at the start saves time. It helps to include:
- Any deadline, such as an exchange date
- What’s prompted the survey
- Where any leaks, stains or damp patches show inside
- What kind of property and roof it is
A quick phone call is normally the easiest start: call 07833 053749 or send us an email, and we will ask about the building and what you need. The price is agreed before a date is set.
Also near North Cray
Other services in North Cray
What we are asked to look at in North Cray
Seams are a common weak point in flat roof waterproofing. Small openings at laps can leak long before anyone notices.
It’s worth booking a survey if you’ve seen:
- New roofs to check before paving or planting
- Leaks through a covered membrane
- Holes around roof penetrations
- Gaps at membrane joints
For landlords with property near Albany Park station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
Before booking any roof surveyor
- Their insurance cover
- How long they’ve been surveying roofs
- When you’ll get the report
- Whether any drone flown is registered with the CAA
What happens if roof problems are left?
ELD before paving, ballast or planting goes on is simpler. Once layers are added, finding a breach is harder. Blocked gutters and hoppers on London houses overflow and soak brickwork, which can lead to damp inside. A small blockage left for a few winters becomes a damp problem.
To find out what your survey will cost, phone 07833 053749 or drop us an email and let us know about the roof. The price is agreed before a date is set.
Why us?
- 5,000+ roofs surveyed
- Insured for professional indemnity and public liability
- Over 20 years’ experience
- Visits on any day of the week
Take a look at what a roof survey costs and two real surveys.
North Cray questions
Will parking be an issue for a roof survey in North Cray?
It rarely stops a survey, but it is worth planning. Let us know what parking is available nearby, and the visit is planned around it.
Is my home in North Cray listed or in a conservation area?
Start with Historic England’s list for listing and your council for conservation areas. It’s worth checking before planning roof work, as both can affect what’s allowed.
How long does electronic leak detection take?
It typically takes longer on a large roof than a small one, with the construction of the roof playing a part too.
Does ELD include fixing the breach?
No. ELD is testing only. You get the breach locations with photos so your roofer can fix them.
Are you structural engineers?
No. We’re experienced roof surveyors, and visible signs like sagging are noted, but we do not provide calculations or an engineer’s opinion. If one is needed, the report says so.
How is ELD priced?
Electronic leak detection is quoted for your roof, because the method depends on the roof. Size, build-up and access all affect the price. For a quote, ring 07833 053749 or use the contact form.
Do you survey roofs on blocks of flats?
Yes, once whoever controls the roof agrees access. We look at the parts we’re given access to.
Before and after the survey
Some practical points come up on survey after survey. They apply to most roofs:
- Find the breach before more patching
- Note where leaks show inside and when
- Check new waterproofing before handover
- Act on new leaks promptly
Where the evidence points to walls, copings or rooflights, we will note it, with a suggestion of what to check next.
Ask trades working on the roof to protect the membrane when they work up there. Have the roof looked at after other work.
Rented homes, blocks and businesses
If the property is let, the agent or a tenant can let us in. We survey seven days a week, which helps when tenants work during the week.
Shared roofs need a little more planning: we need access agreed with the building owner or managing agent. Mention it when you get in touch and we will plan the survey around it.
How it works
Time on site depends on the size and shape of the roof, but as a rough guide the survey takes a time that depends on the roof’s area and construction, which we set out in the quote. 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’s useful to agree access with the neighbours or the managing agent first. Everything else is planned around the building, not the postcode.
- First, you tell us about the roof build-up and where water is showing.
- The roof is assessed to see if electronic testing will work on it.
- The method depends on the membrane and what sits above and below it.
- 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.
Before we arrive
- Have any questions written down, so nothing gets missed
- For a flat or shared roof, check access with whoever owns or manages the building
- Show us where any leaks or stains appear
Booking a survey
For a price for electronic leak detection in North Cray, call 07833 053749 or use the contact form. The address, the type of property and what you want to find out help us give you an accurate price.
Related advice
Electronic leak detection around North Cray
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. Next to the main roofs there is typically a flat roof somewhere, whether on an extension, a garage or a commercial unit. With Hall Place and Gardens about 1.4 miles north-east, North Cray sits in an area with a long building history. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead, and a listed home or one in a conservation area may need consent for changes of material.
For an older house near a landmark such as Parish Church of St James, the flat roofs on later extensions tend to wear out long before the main roof. If you look after a building such as Royal Park Primary Academy, schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks.
North Cray is about 2 miles east of Sidcup, in Greater London. Whether the building in North Cray is a house, a flat or a commercial unit, the roof can be surveyed. Our Greater London coverage includes North Cray and the places around it. You can also see our page for London.
Surveys in DA14 are booked the same way as anywhere else. You will find streets such as Water Lane, North Cray Road and Leafield Lane, all of which we cover. We also cover Bexley (1 mile north), Coldblow (1 mile north-east), Ruxley (1 mile south), Blendon (1 mile north-west) and Joyden's Wood (1 mile east). Further out, we also cover London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (15 miles west), St Pancras (13 miles north-west) and Shoreditch (11 miles north-west).
Around North Cray
We work in homes and buildings around Foots Cray Meadows, Cleeve Park School and The White Cross pub, among other places. The nearest railway station is Albany Park station, roughly 0.6 miles north-west. A little further out are Broadway Shopping Centre (1.7 miles north) and Bexley Hospital (1.8 miles north). For a walk, there is Wansunt Pit and Summer Hill.