Hertfordshire · London and the South East
Electronic leak detection in Northchurch, Hertfordshire
Electronic leak detection to pinpoint holes in flat roof membranes in Northchurch, carried out by an experienced roof surveyor. Every survey comes with a written report and photos.
- Repairs that haven’t stopped the leak
- Leaks showing away from the breach
- Damage from equipment installers
When you need someone else
Our findings are based on what we can see safely on the day, so there are some things a survey can’t cover:
- Parts of the roof covered by fixed equipment
- Water entering through details rather than the membrane
- Fixing the holes we find
If you’re not sure which survey you need, ring 07833 053749 or drop us an email and we’ll give you a straight answer. What a survey covers and does not.
Roofs we survey in Northchurch
- Commercial flat roofs
- Single-ply roofs
- Green roofs
- Flat roof membranes
- Roof terraces and balconies
- Liquid-applied waterproofing
Electronic leak detection in Northchurch
A leak in a flat roof often shows up a long way from where the water gets in. So the stain inside rarely sits under the hole. ELD tests the waterproofing directly 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. The results then follow in a written report with photos. If you are worried about gaps at membrane joints and leaks through a flat roof with no obvious cause, we can find out what’s behind it, on single-ply roofs, liquid-applied waterproofing and commercial flat roofs alike.
Flat roofs in smaller places like Northchurch can be more exposed, particularly where nothing shelters them, so wind catches loose edges and trims. Felt and bitumen also age in strong sun. The signs are splits, blisters and edges coming away, along with water that sits after rain. Standing water that lingers for days after rain is another sign worth watching for.
The report records the flat roof membrane as we found it on the day. That makes it useful now and a handy reference later, for example when you want to check whether anything has changed.
- Place
- Northchurch (HP4)
- Wider area
- Hertfordshire
- Cost
- Quoted for your roof
- Report
- Emailed report with photos and recommendations
- Survey days
- Monday to Sunday, daytime
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Nearby places to Northchurch
What else we do in Northchurch
Practical tips
Some practical points come up on survey after survey. They’re worth knowing whatever the roof:
- Note where leaks show inside and when
- Do not leave water getting in
- Make sure trades protect the waterproofing
- Don’t let outlets block
Where the evidence points to walls, copings or rooflights, we’ll note it, so other causes can be checked.
Keep people off the flat roof unless they need to be there. Many breaches come from foot traffic.
Questions from Northchurch
Do you cover smaller places like Northchurch?
Yes, we do. Our area covers London and South East England, and smaller places are part of that. Longer journeys are simply planned ahead of time.
How do I find out if my home in Northchurch is listed?
Your council is the best source, with Historic England’s list for listed buildings. A change of roofing material may need consent in either case.
How long will testing take?
Testing usually takes a length of time set by the membrane area and the build-up, which we’ll explain when we quote.
Does ELD include fixing the breach?
No, the test finds the breaches and your roofer repairs them. The report gives your roofer the locations.
Can you survey in bad weather?
It depends on the weather and the survey. Strong wind or a downpour can make access unsafe and ground a drone, so we’d move the date with you.
How much does electronic leak detection cost?
We quote for each roof individually. Tell us about the roof and where it leaks. Just call 07833 053749 or send us an email for a quote.
Is it the same as a RICS Level 2 or Level 3 survey?
No. We look at 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.
How it works
Every visit follows the same pattern: we hear what you’ve seen, look at the roof from every safe viewpoint, photograph what we find and make notes for the report. It normally takes as long as needed for the roof’s area and construction, which we set out in the quote. Being in a smaller place like Northchurch does not change how the visit works: outside, inside and from any safe vantage point, in that order. It helps to show us anything you’ve already noticed.
- 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.
- The method depends on the membrane and what sits above and below it.
- We test the membrane and find where current is passing through it.
- The breaches are recorded with photographs in a report for your roofer.
Getting ready for the survey
- If you are buying, let the agent know when we’re coming
- Have any paperwork from past roof work to hand
- Have any questions written down, so nothing gets missed
Getting a price
We confirm the exact price before booking, so you know where you stand. Electronic leak detection is quoted for your roof, because the method depends on the roof. To book, phone 07833 053749 or use the contact form.
Advice
Why it’s worth a survey now in Northchurch
Repeated call-outs for the same leak add up. A report showing the breach points gives your roofer a clear target. Around Northchurch, a leak in an older house can soak into timbers and plaster, which is far harder to put right than the roof fault itself.
To find out what your survey will cost, phone 07833 053749 or email us and let us know about the roof. The price is agreed before a date is set.
Why book with us
- Surveys on weekdays, Saturdays and Sundays
- A report with photographs
- Drone flown under a CAA Flyer ID and Operator ID
- Satisfaction rate of 98%
Take a look at how roof surveys are priced and what we found on two real jobs.
What we look for on each type of roof
Single-ply membranes
ELD often works on single-ply membranes, depending on the type and build-up.
EPDM rubber roofs
Certain rubber membranes are conductive, which can rule out some methods. We will tell you if yours is not suitable.
Electronic leak detection around Northchurch
About 3 miles west lies Cholesbury Manor House, a reminder of how long the area around Northchurch has been built on. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead, and any change of roofing material on a listed home needs checking with the council first. Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles, and flat-roofed additions turn up almost everywhere. Mixed in with those pitched roofs are plenty of flat ones, over rear extensions, dormers, garages and shops.
For site and facilities teams at buildings such as St Mary's CofE Primary School, large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly. For an older house near a landmark such as Church of Saint Mary, the flat roofs on later extensions tend to wear out long before the main roof.
Northchurch is about 1 mile north-west of Berkhamsted, in Hertfordshire. We carry out electronic leak detection in Northchurch for houses, flats, blocks and commercial buildings, with a written report and photographs every time. Across Hertfordshire, we cover Northchurch and the places around it. For surveys nearby, see our Milton Keynes page.
We cover every part of HP4 for electronic leak detection. That includes homes and businesses on New Road, Dell Road and Bell Lane and the roads around them. Neighbouring places we cover for electronic leak detection include Berkhamsted (1 mile south-east), Norcott Hill (1 mile north), Ashley Green (2 miles south), Ashridge (2 miles north-east) and Frithsden (3 miles east). We also work in nearby towns such as Watford (11 miles south-east), Hemel Hempstead (6 miles east), St Albans (11 miles east), Harpenden (11 miles east), Hatfield (15 miles east) and Borehamwood (15 miles south-east).
Landmarks near Northchurch
We work in homes and buildings around Saint George And The Dragon Public House and Ashlyns School. For rail, the closest station is Berkhamsted station, roughly 1.2 miles east of the centre. Well-known places in the area include Hemel Hempstead Hospital (5.2 miles east) and Hawridge Court (2.4 miles south-west). The countryside around Northchurch includes Pavis Wood and Sands Bank.
When to book a survey in Northchurch
Seams are a common weak point in flat roof waterproofing. Small openings at laps can leak for months before it shows.
Common reasons to book include:
- Leaks at pipes, outlets or fixings
- Stains far from any visible defect
- Leaks under green or ballasted roofs
- Punctures from foot traffic or tools
If you let a flat or house near Berkhamsted station, a flat roof over a rented flat is easy to forget until the tenant reports a leak.
Before you book any roof surveyor
- Whether you get a written report with photos
- What they will not be able to tell you
- What follow-up you get after the report
- How they’ll see the roof: from ground level, the loft, the roof or by drone