Hertfordshire · London and the South East
Electronic Leak Detection in Datchworth
Independent electronic leak detection in Datchworth. More than 5,000 surveys completed across London and South East England.
- Leaks that return after repairs
- Stains far from any visible defect
- Breaches hidden under paving or planting
Datchworth questions
Is my home in Datchworth listed or in a conservation area?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it is in a conservation area. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Is Datchworth within the area you cover?
Yes. Datchworth is within the area we cover, which takes in towns, villages and rural addresses. We cover the whole of London and South East England. Just mention lanes, gates or anything else about the route as you book.
How do you choose the testing method?
The roof decides the method. You’ll know which method we plan to use before we start.
Do you carry out surveys on Saturdays and Sundays?
Surveys run on weekdays and at weekends. To find a day that suits you, call 07833 053749 or email us.
Do you test for asbestos?
No. We do not sample or test for asbestos. The report may flag materials that could contain asbestos on buildings built or refurbished before 2000.
Will you check the loft?
Yes, where the survey calls for it and there is safe access. Inside, we look for damp, staining, gaps and sagging, as far as the space allows.
How do I arrange electronic leak detection in Datchworth?
To arrange a survey, call 07833 053749 or email us with the address, the type of property and what’s prompted the survey. We’ll confirm the price and find a day that suits.
About our electronic leak detection in Datchworth
ELD suits many waterproofing membranes on flat roofs, on homes, blocks and commercial buildings. It helps trace a leak you already have or to test a new membrane before it’s covered. We quote for each roof based on its size and build-up. Testing can be carried out on weekdays, Saturdays or Sundays, depending on the weather. Just ask about your roof. If you’re worried about water coming in under a flat roof and leaks that return after repairs, a survey will tell you what’s going on, whatever the roof.
In a village or hamlet like Datchworth, flat roofs are usually on extensions, garages, outbuildings or barn conversions. They need the same care as any town roof: the covering, the edges, the upstands and where water drains away. We simply plan the journey and access ahead of time. Garages and outbuildings are easy to forget, so mention any you want included when you book.
The report records the flat roof membrane as we found it on the day. That makes it useful now and a handy reference later.
- Place
- Datchworth (SG3)
- Region
- Hertfordshire
- Prices
- Quoted for your roof
- Reports
- Written, with photos, emailed to you
- Appointments
- Monday to Sunday, daytime
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
What we do, step by step
A survey visit follows a simple order: we listen to what’s been worrying you, inspect the roof from every safe vantage point, take photos as we go and make notes for the report. Most visits take as long as needed for the roof’s area and construction, and we’ll give you a guide when quoting. In a hamlet or village like Datchworth, a postcode doesn’t always lead to the right gate, so a few directions are welcome. The visit itself is the same as anywhere else.
- You tell us 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.
- You get a report with photos of each breach.
Getting ready for the survey
- Have any paperwork from past roof work to hand
- Make sure we can get to the back of the property
- Clear the way to the loft hatch
Arrange a survey
Photos help, if you have them. Take them safely from the ground or a window. To send them or to book, phone 07833 053749 or send us an email.
Advice
Different roofs, different checks
Green and ballasted roofs
Roofs with planting or ballast hide the membrane. Testing may still be possible but it depends on the layers.
Liquid-applied waterproofing
Liquid-applied coatings form a seamless layer but holes and thin areas can occur. Whether ELD works depends on the coating and build-up.
Tips that help
Small things make a difference, both for the survey and for the roof itself. Our tips:
- Clear flat roof outlets regularly
- Get leaks traced quickly
- Keep foot traffic on flat roofs to a minimum
- Have roof specifications to hand
Once repairs are made, the roof can be tested again if you want to check them if the build-up allows.
Do not leave a flat roof leak running. Water under a membrane can spread.
What we are asked to look at in Datchworth
If a flat roof keeps leaking after patching, the hole may be elsewhere. Electronic testing helps pinpoint it.
Look out for signs like these:
- Leaks that return after repairs
- Leaks through a covered membrane
- Leaks through a flat roof with no obvious cause
- Failed seams and laps
If your house is among the older ones in the streets near Church of All Saints, any flat roof added at the back or on a dormer is likely to be far younger, and less durable, than the main roof.
What to check before booking
- Whether you get a written report with photos
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
- Whether you can ask questions once you have the report
- Which limits apply to the survey
What a survey costs
Every roof is different, so prices are confirmed before you book. These are the things that affect it:
- Roof area
- How many separate roofs there are, such as extensions, dormers and garages
- How complicated the roof is, with its valleys, chimneys and parapets
- Height and safe access
What a survey costs comes down to the roof itself: its size, its height, how many sections it has 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
We will typically ask about:
- Any marks or damp showing indoors
- Whether there is a loft hatch, a shared roof or tricky access
- Photos of the roof, taken safely from the ground or a window
- What made you get in touch
Booking is simple: just call 07833 053749 or email us, let us know about the property and we will explain which survey suits. The price is agreed up front.
Why get it checked now?
ELD before paving, ballast or planting goes on is simpler. Once layers are added, finding a breach is harder. Older cottages and farmhouses around Datchworth can have roof timbers that have been there a very long time, where water from a failed roof can cause rot if it’s left.
For a price for your roof in Datchworth, phone 07833 053749 or use the contact form and tell us about the roof. We will confirm the figure before booking.
What you get with us
- We hold a CAA Flyer ID and Operator ID
- Drone and thermal imaging surveys available
- Two decades and more of roof surveys
- Independent findings on the roof’s condition
Take a look at what a roof survey costs and what we found on two real jobs.
Nearby places to Datchworth
What else we do in Datchworth
Electronic leak detection around Datchworth
Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. Aston Bury, about 1.9 miles north, is one of the historic houses in the wider area around Datchworth. 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 site and facilities teams at buildings such as St Michael's Woolmer Green CofE VA Primary School, 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 Knebworth station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
Datchworth is about 4 miles north of Welwyn Garden City, in Hertfordshire. We cover Datchworth and the rest of Hertfordshire. We cover towns and villages across Hertfordshire. There is also a page for London.
Postcode districts we cover here for electronic leak detection: SG3. We offer electronic leak detection to properties on Brookbridge Lane, Nutcroft and Meadow Close. Nearby, we also carry out electronic leak detection in Bull's Green (1 mile south), Woolmer Green (1 mile west), Burnham Green (1 mile south), Hook's Cross (1 mile north-east) and Tewin Wood (1 mile south). Within a short drive, we also cover Hemel Hempstead (15 miles south-west), Stevenage (4 miles north), St Albans (10 miles south-west), Bishop's Stortford (14 miles east), Welwyn Garden City (4 miles south) and Harpenden (8 miles west).
Local landmarks in Datchworth
We work in homes and buildings around The Tilbury pub and the streets around them. For rail, the closest station is Knebworth station, about 1.6 miles north-west of the centre. Nearby you will also find Benington Castle (3.5 miles north-east) and Datchworth Museum (under half a mile south). Open spaces near Datchworth include Mardley Heath.