Hertfordshire · London and the South East
Electronic leak detection in Hertford, Hertfordshire
Electronic leak detection in Hertford, with over 20 years’ experience behind it. You get a clear report with photos.
- Failed seams and laps
- Holes left by work on the roof
- Water coming in under a flat roof
The survey, step by step
Expect us to ask a few questions before we start, like when any problem began and what work has been done before. The inspection then takes longer on a large roof than a small one, and the build-up of the roof makes a difference too. Most visits in a town like Hertford start at the front of the house and work round to the back. The back garden is often where extensions, dormers and rear slopes are best seen. The loft comes next, where there’s safe access.
- You let us know about the roof and where water is showing.
- The roof is assessed for suitability first.
- We choose a low-voltage or high-voltage method to match the roof.
- We test the roof and locate any breaches.
- A report with photos shows where each breach is.
Preparing for the visit
- Agree roof access with the managing agent if it’s shared
- Make a note of anything you’d like us to look at
- Let us know where we can park nearby
How to book
To book a survey, ring 07833 053749 or use the contact form with the address and what you’d like to know about the roof. You will know the price before anything is booked.
Advice
How electronic leak detection works in Hertford
We carry out electronic leak detection on flat roofs in Hertford and across London and the South East. Testing 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. Every roof is quoted on its size and build-up. The results come in a written report with photos. We survey roof terraces and balconies, single-ply roofs and flat roof membranes, and the problems we are asked to look at most are failed seams and laps and breaches around outlets and penetrations.
In a town like Hertford, flat roofs are common on rear extensions, garages, porches and dormers. Older ones are often felt, which often lasts around 15–20 years, while newer ones may be EPDM rubber or GRP fibreglass. Ponding water, splits along the edges and lifting upstands are the usual warning signs. Water that sits for days after rain is often the first sign a flat roof needs attention.
Most points in the report come with a picture, so you can see each defect rather than just read about it. Anything out of sight on the day is listed as such.
- Place
- Hertford (SG14, SG13)
- Wider area
- Hertfordshire
- Price
- Quoted for your roof
- Report
- A written report with photos, by email
- Appointments
- Weekdays, Saturdays and Sundays
- Insured
- PI and public liability insurance
- Phone
- 07833 053749
- Last updated
- 27 October 2026
What this survey can’t tell you
Some things can’t be seen without opening up the roof, so a survey has limits:
- Areas we can’t reach or that can’t be tested
- Some conductive membranes
- Fixing the holes we find
If you’re not sure which survey you need, phone 07833 053749 or use the contact form and we’ll give you a straight answer. The full list of what we check.
Roof types and parts we check
- Commercial flat roofs
- Roof terraces and balconies
- Flat roof membranes
- Green roofs
- Liquid-applied waterproofing
- Single-ply roofs
Practical tips
A little preparation and a few simple habits help, both for the survey and for the roof itself. Our tips:
- Check new waterproofing before handover
- Find the breach before more patching
- Share any drawings of the roof
- Stay off the flat roof unless needed
After your roofer repairs the breaches, a retest can confirm them, where the roof still suits the method.
Act on leaks quickly. Water under a membrane can spread.
Flat roofs in Hertford
Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles, with flat-roofed extensions, dormers and garages common everywhere. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. There are several hotels within about a mile and a half of Hertford, and hotels, like offices and blocks of flats, frequently have flat roofs. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use.
Anyone responsible for a site like Mill Mead Primary School will know that large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly. If you own a rental within reach of Hertford East station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Hertford is about 9 miles south-east of Stevenage, in Hertfordshire. We cover Hertford and the rest of Hertfordshire, as part of our work across London and South East England. Hertford is one of the places in Hertfordshire we cover. Our London page covers surveys nearby.
We cover every part of SG14 and SG13 for electronic leak detection and the streets around it. You’ll find streets such as Salisbury Square, Market Street and Parliament Square, and we cover them all. Being close to the A10 and A119, Hertford is simple for us to get to for electronic leak detection. If you’re just outside Hertford, we cover Horns Mill (1 mile south), Foxholes (1 mile east), Rush Green (2 miles east), Hertford Heath (2 miles south-east) and Little Amwell (2 miles south-east). Within a short drive, we also cover Stevenage (9 miles north-west), St Albans (11 miles west), Bishop's Stortford (11 miles north-east), Welwyn Garden City (5 miles west), Harpenden (12 miles west) and Hitchin (13 miles north-west).
Near you in Hertford
We work in homes and buildings around The Old Barge pub and Richard Hale School, among other places. Hertford has its own railway station: Hertford East station. A little further out are Hertford County Hospital (under half a mile south-west) and Mcmullen & Sons Brewery Museum (under half a mile south-west). The countryside around Hertford includes Willowmead.
Your questions about electronic leak detection in Hertford
How do I find out if my home in Hertford is listed?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. It matters most if you are planning to re-roof in a different material.
Do you look at commercial flat roofs near Hertford, such as hotels?
Yes, commercial flat roofs are part of what we cover. Larger commercial roofs are quoted for the building, and roof access is agreed with you before the visit.
How quickly is the report sent?
That depends on the survey you book: the Basic Survey report arrives within 48 hours, the Standard Survey in 24 to 48 hours and the Premium Survey the same day. The report is emailed to you.
Will you walk on the roof?
Only when it is safe. Safety comes first, and fragile or steep roofs can’t always be walked on. We use safe viewpoints, the roof space and a drone where it applies, and the report records anything we couldn’t see.
Do you take photos of the roof?
Yes, plenty. Each finding is shown in a picture where possible.
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. For a quote, phone 07833 053749 or drop us an email.
What do I do with the report?
We email you the written report with photographs and recommendations. It’s yours to share with a seller, insurer, roofer or managing agent, whichever applies.
DIY checks: what’s safe
The one thing to avoid is getting up close. Roofs are fragile and slippery, and falls from height are serious. That’s where a survey comes in.
Keep a simple record: when leaks happen, ground-level photos and any past roof work. Share it with us as you book and it will help the survey.
Also in Hertford
When to book a survey in Hertford
Roofs covered with paving, ballast or planting hide the membrane. ELD can work on some covered roofs though it depends on the layers.
These are some of the problems a survey can pick up:
- Leaking laps in the waterproofing
- New membranes needing a check before handover
- Holes left by work on the roof
- Leaks at pipes, outlets or fixings
The streets around a church like Hertford United Reform Church are often among the oldest in a place, and if yours is one of the older homes nearby, the joins between later flat roofs and the old walls are where problems typically start.
Before you book any roof surveyor
- Will they check the loft as well as the outside?
- What follow-up you get after the report
- How long they’ve been surveying roofs
- Is VAT included in the price?
Prices for electronic leak detection in Hertford
What a survey costs depends on the time and equipment it needs. That comes down to:
- Whether thermal imaging or a drone is needed
- Height and safe access
- The size of the roof
- Extra roofs, like extensions, dormers or garages
To find out what your survey will cost, call 07833 053749 or drop us an email with the address and some details. We’ll confirm the figure before booking.
What to tell us when you get in touch
What helps most when you contact us:
- Why you want a survey: buying, a leak, a storm or new work
- Your postcode, so we can check access and travel
- Pictures from the garden or a window, if you have them
- Your timetable, such as an exchange date
To get a price for electronic leak detection in Hertford, ring 07833 053749 or drop us an email. Some details about the property and the roof help us give you an accurate price.