Hertfordshire · London and the South East
Electronic leak detection in Nup End Green, Hertfordshire
Electronic leak detection in Nup End Green, backed by more than 20 years’ experience. You get a clear report with photos.
- Breaches around outlets and penetrations
- Repairs that haven’t stopped the leak
- Leaking laps in the waterproofing
Electronic leak detection for homes and businesses in Nup End Green
Electronic leak detection works on many flat roof membranes over offices, units, blocks of flats and homes. It helps trace a leak you already have or check a new membrane before handover. We quote for each roof based on its size and build-up. We can test on weekdays and at weekends when conditions allow. Just ask about your roof. We survey flat roof membranes, roof terraces and balconies and single-ply roofs, and common reasons people get in touch are waterproofing to test before it’s covered and damage from equipment installers.
In a small place like Nup End Green, a flat roof can stand in the open, which is hard on edges, upstands and joins in the covering. Felt roofs, which often last around 15–20 years, typically show it first. Rubber and GRP last longer, though trims and joints still need a look. Exposed edges are normally the first part of a flat roof to go.
Nothing in the report is left vague: if work is needed, the report says so clearly, and where it can wait, that’s said too.
- Place
- Nup End Green (SG3)
- Wider area
- Hertfordshire
- Cost
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- When we survey
- Weekdays, Saturdays and Sundays
- Insured
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
What electronic leak detection doesn’t cover
It’s a careful look at the flat roof membrane, not the whole story. Its limits include:
- Roofs whose membrane or build-up isn’t suitable
- How wet the insulation is
- Leaks from walls, copings or rooflights
Not sure which survey suits your roof? You can call 07833 053749 or send us an email and we will tell you. What a survey covers and does not.
What we check
- Green roofs
- Liquid-applied waterproofing
- Single-ply roofs
- Commercial flat roofs
- Roof terraces and balconies
- Flat roof membranes
Signs you need electronic leak detection in Nup End Green
When the membrane is buried, holes can’t be seen at all. ELD can work on some covered roofs though it depends on the layers.
Look out for signs like these:
- Water coming in under a flat roof
- Leaks through a covered membrane
- Leaks showing away from the breach
- Leaks at pipes, outlets or fixings
If you live in an older home near Church of St Mary and St Thomas, later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear.
Before you book any roof surveyor
- What’s outside the scope of the survey
- Which parts of the roof they’ll actually see
- Whether you get a written report with photos
- Whether any drone flown is registered with the CAA
Roof by roof
EPDM rubber roofs
Certain rubber membranes are conductive, which can rule out some methods. We will say if the test won’t work.
Liquid-applied waterproofing
What lies under a liquid coating decides if ELD will work.
What we do, step by step
A survey visit follows a simple order: we listen to what’s been worrying you, look at the roof from every safe viewpoint, photograph what we find and record our findings for the written report. It typically takes a time that depends on the size of the roof and how it’s built, which we set out in the quote. In a hamlet or village like Nup End Green, a postcode does not always lead to the right gate, so a few directions are welcome. The visit itself is the same as anywhere else.
- First, we confirm which roof areas are included.
- The surface is prepared for the chosen method.
- We work across the roof with the test equipment.
- Each breach found is located and recorded.
- The report is sent for your roofer to act on.
Preparing for the visit
- If it isn’t your property yet, arrange access through the agent
- Mention any parking restrictions on your street
- Keep pets inside or away from the areas we’re looking at
Arrange a survey
Surveys can be booked for weekdays, Saturdays or Sundays. To arrange a day that suits you, phone 07833 053749 or send us an email with the address and the days you’d prefer.
Related advice
For landlords and managing agents
Landlords and letting agents in Nup End Green book surveys as well as homeowners. The report gives you a dated record of the flat roof membrane, with photographs, which helps you plan work between tenancies.
Businesses and commercial landlords can book us too. Larger roofs take longer.
Towns and villages near Nup End Green
Also in Nup End Green
FAQs for Nup End Green
Is Nup End Green within the area you cover?
Yes, smaller places are covered as well as towns. We work right across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you carry out roof surveys in Nup End Green?
Yes, Nup End Green is within the area we cover. Our area covers London and the South East. You can ring 07833 053749 or email us with the address and some details, and we’ll talk through which survey suits.
Are you structural engineers?
No. We are roof surveyors, not structural engineers, and it doesn’t include calculations. We’ll recommend an engineer if we see signs that call for one.
Will you fly a drone over my roof?
Yes, where it’s applicable. Flights depend on the weather on the day and airspace rules, and we check for restrictions near airports before flying. We are a CAA-registered drone operator.
Is this an asbestos survey?
No. Asbestos surveys and sampling are not something we do. The report may flag materials that could contain asbestos on buildings built or refurbished before 2000.
Is the repair part of the test?
No, the test finds the breaches and your roofer repairs them. Your roofer uses the report to target the repair.
Do you need to get into the loft?
If there is a loft and safe access to it, yes. The loft space can show things the outside cannot, such as damp timbers, staining or daylight.
Local flat roofs in Nup End Green
The wider area around Nup End Green has a long history of building, with Knebworth House about 0.6 miles north-east. Older roofs in the wider area can hide decades of patch repairs, so the detail matters. Across the South East, older homes tend to have slate or clay tiles, and many later ones concrete tiles. Next to the main roofs there is usually a flat roof somewhere, whether on an extension, a garage or a commercial unit.
If you let a flat or house near Knebworth station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
Nup End Green is about 3 miles south-west of Stevenage, in Hertfordshire. Wherever you are in Nup End Green, we can come and survey your property, on a weekday, Saturday or Sunday. Across Hertfordshire, we cover Nup End Green. For surveys nearby, see our London page.
Electronic leak detection in SG3 work the same way as everywhere else we cover. Neighbouring places we cover for electronic leak detection include Driver's End (1 mile west), Old Knebworth (1 mile north-east), Rableyheath (1 mile south-east), Pottersheath (1 mile south-east) and Codicote (1 mile south-west). Within a short drive, we also cover Hemel Hempstead (13 miles south-west), Stevenage (3 miles north-east), St Albans (9 miles south-west), Welwyn Garden City (5 miles south), Harpenden (6 miles south-west) and Hitchin (6 miles north).
Landmarks near Nup End Green
Locally, jobs take us to homes and businesses close to Robin Hood And Little John Public House and Knebworth Park, among other places. For rail, the closest station is Knebworth station, about 1.4 miles east of the centre. A little further out are Benington Castle (4.9 miles north-east) and Lister Hospital (4.1 miles north). The countryside around Nup End Green includes Mardley Heath.
Useful tips for Nup End Green property owners
There’s plenty you can do without going near the roof. What helps most:
- Note where leaks show inside and when
- Avoid repeated repairs without finding the cause
- Stay off the flat roof unless needed
- Consider ELD before paving or planting goes on
Where the evidence points to walls, copings or rooflights, we will note it, with a suggestion of what to check next.
Make sure contractors protect the waterproofing when fitting equipment. Have the roof looked at after other work.