Hertfordshire · London and the South East
Electronic leak detection in Whitwell, Hertfordshire
Electronic leak detection to pinpoint holes in flat roof membranes in Whitwell, with drones and thermal imaging where they help. Get in touch for a price.
- Water coming in under a flat roof
- New membranes needing a check before handover
- Repairs that haven’t stopped the leak
About our electronic leak detection in Whitwell
Some flat roofs cannot be tested electronically. Some membranes conduct electricity themselves and some roofs do not have a suitable layer beneath the membrane. We’ll say if ELD won’t work on your roof at the start. Telling us what you know about the roof’s membrane and layers helps, including drawings, specifications or the roofer’s paperwork. It avoids arranging a test that can’t give results. We survey roof terraces and balconies, liquid-applied waterproofing and green roofs, and people most often book us about leaks through a covered membrane and holes left by work on the roof.
Older buildings in small places like Whitwell may be listed or in a conservation area, and that can affect how an extension roof or dormer is re-covered. Check with the council before planning any change of material. Knowing the roof’s condition is the starting point. Changes that affect a listed building’s special interest need listed building consent.
The report is yours to share with whoever needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent, whichever applies.
- Where
- Whitwell (SG4)
- Region
- Hertfordshire
- Price
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- When we survey
- Monday to Sunday, daytime
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Tips from our surveys
Getting the most from electronic leak detection starts before we arrive and carries on afterwards. Some tips:
- Act on new leaks promptly
- Check new waterproofing before handover
- Avoid repeated repairs without finding the cause
- Share any drawings of the roof
After your roofer repairs the breaches, a retest can confirm them if the build-up allows.
Check contractors protect the waterproofing when they work up there. Check the roof after they’ve finished.
Why get it checked now?
Repairs in the wrong place leave the leak in place. Testing shows where the membrane is actually breached. For an older or listed building in a place like Whitwell, repairs may need matching materials and consent, so a defect found early gives time to plan the work properly.
For a price for your roof in Whitwell, phone 07833 053749 or email us and tell us about the roof. The price is agreed before a date is set.
Why book with us
- More than 5,000 surveys completed
- Customer satisfaction of 98%
- Thermal imaging and drones used where they help
- Covered by professional indemnity and public liability insurance
Take a look at what a roof survey costs and two real surveys.
How it works
Every roof is different, but as a rough guide the survey takes longer on a large roof than a small one, with the construction of the roof playing a part too. If you have questions on the day, just ask. Older rural homes like those around Whitwell can have a main roof, lower lean-to roofs and outbuildings all joined together. Each part is looked at from wherever it can be seen safely, and anything we cannot see is noted.
- We ask about the roof, its age, its membrane and where leaks appear inside.
- 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.
- The roof is tested and any breaches are located.
- The breaches are recorded with photographs in a report for your roofer.
Before the survey
- For flats, check roof access has been agreed
- Note where any stains or damp appear
- Make a note of anything you’d like us to look at
Getting a price
Buyers should book once an offer has been accepted, so you have the findings in time to act on them before you exchange. Otherwise, simply ring 07833 053749 or use the contact form whenever suits you.
Related advice
Your questions about electronic leak detection in Whitwell
Do you cover Whitwell?
We do. Every survey there gets the same written report with photos, and visits run on weekdays and weekends.
Will you come out to Whitwell?
Yes, Whitwell is covered. We work right across London and the South East, from towns to the smallest villages. Longer journeys are simply planned ahead of time.
Do you survey on Saturdays and Sundays?
Surveys run on any day of the week. To find a day that suits you, ring 07833 053749 or drop us an email.
What if it rains on the day?
A survey can normally go ahead in light rain, and it can even help show where water is getting in. High wind or heavy rain can stop drone flights and make roof access unsafe, so we’ll agree a new date if the weather is not suitable.
Do you take photos of the roof?
Yes. We photograph the roof as we go, and the report uses them to show each finding.
How long will testing take?
It depends on the size of the roof and its build-up. We will give you an idea when we quote.
Can you tell me if my roof has asbestos?
No. We don’t carry out asbestos surveys or testing. We flag materials that could contain asbestos, such as cement sheets or soffits on pre-2000 buildings, and recommend a specialist asbestos surveyor checks them before they’re disturbed.
Different roofs, different checks
Single-ply membranes
Punctures from foot traffic and equipment are common on single-ply roofs. ELD can locate them.
Bituminous membranes
Bituminous roofs often have laps and old repairs where breaches occur. We test where the roof suits it.
What you can safely check yourself
A DIY look is useful, but it isn’t a survey. You won’t see flashings, valleys or the backs of chimneys properly from the ground, and those are details a survey looks at closely.
If you have a loft with safe access, take a look inside. Take a torch and only step on boards or joists, checking for stains, damp wood or chinks of daylight.
Places near Whitwell
What else we do in Whitwell
Local flat roofs in Whitwell
The wider area around Whitwell has a long history of building, with Shaw's Corner about 2.9 miles south. On older houses around here, roofs frequently 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. Older houses in the South East frequently have slate or clay tile roofs, while many later estates have concrete tiles, and flat-roofed additions turn up almost everywhere. Next to the main roofs there is typically a flat roof somewhere, whether on an extension, a garage or a commercial unit.
Anyone responsible for a site like St Paul's Walden Primary School will know that ponding and blocked outlets on a wide flat roof are worth catching before the next wet season. The streets around a church such as All Saints Church are frequently among the oldest in a place, and if your home is one of the older ones nearby, the joins between later flat roofs and the old walls are where problems usually start. If you let a flat or house near Stevenage station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Whitwell is about 5 miles north-east of Harpenden, in Hertfordshire. We survey roofs in Whitwell as part of our work across London and the South East. Our area takes in places right across Hertfordshire, large and small. Our Milton Keynes page covers surveys nearby.
We survey roofs across SG4 for electronic leak detection. Local streets include High Street, Horn Hill and King George's Way, and we cover them all. Other places close to Whitwell include St Paul's Walden (1 mile north-east), Kimpton (2 miles south), Langley Bottom (2 miles north-east), Langley (2 miles east) and Rush Green (2 miles north-east). Further out, we also cover Watford (15 miles south), Hemel Hempstead (11 miles south-west), Stevenage (5 miles north-east), St Albans (9 miles south), Welwyn Garden City (7 miles south-east) and Harpenden (5 miles south-west).
What’s near Whitwell
Typical jobs here are in homes near Eagle And Child Public House. Whitwell’s nearest station is Stevenage station, roughly 3.8 miles north-east of the centre. A little further out are Lister Hospital (4.6 miles north-east). Open spaces near Whitwell include Stocking Springs Wood.
For landlords and managing agents
Shared roofs need a little more planning: we need access agreed with the building owner or managing agent. Let us know about it as you book and we will plan the survey around it.
Businesses and commercial landlords can book us too, including offices, shops and units. Larger roofs take longer, and they’re priced for the size.