Hertfordshire · London and the South East
Chells Electronic Leak Detection
Get a clear view of the flat roof membrane at a property in Chells. We visit on weekdays and at weekends.
- New roofs to check before paving or planting
- Water coming in under a flat roof
- Leaking laps in the waterproofing
Electronic leak detection for homes and businesses in Chells
We carry out electronic leak detection on flat roofs in Chells and across London and the South East. A visit normally takes longer on a large roof than a small one, with the construction of the roof playing a part too. Electronic leak detection is quoted for your roof, because the method depends on the roof. The results come in a written report with photos. If you’ve noticed breaches hidden under paving or planting and damp inside with no sign on the roof, a survey will tell you what’s going on.
In a smaller place like Chells, some flat roofs sit in the open, so wind catches loose edges and trims. Felt and bitumen also age in strong sun. The signs are splits, blisters and edges coming away. Standing water that lingers for days after rain is another sign worth watching for.
We keep jargon out of it: if work is needed, the report says so clearly.
- Location
- Chells (SG2, SG1)
- Wider area
- Hertfordshire
- Price
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
What a survey costs
All our prices include VAT. The things that change the price are:
- Height and safe access
- Features like valleys, chimneys, dormers and parapets
- Extra roofs, like extensions, dormers or garages
- The roof’s overall size
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. We confirm the exact price before booking.
Helping us price your survey
If you can, have these to hand when you get in touch:
- Pictures from the garden or a window, if you have them
- Anything about access we should know
- Any marks or damp showing indoors
- When you need the report by
We survey roofs on weekdays and at weekends. To arrange a day that suits you, ring 07833 053749 or email us.
When you need someone else
This is not a RICS building survey, a structural engineer’s report or an asbestos survey. Other limits to bear in mind:
- Leaks from walls, copings or rooflights
- Some conductive membranes
- The extent of water in the insulation
If in doubt, phone 07833 053749 or use the contact form and we’ll recommend the right survey. What a survey covers and doesn’t.
What this survey covers
- Single-ply roofs
- Green roofs
- Commercial flat roofs
- Roof terraces and balconies
- Flat roof membranes
- Liquid-applied waterproofing
What we do, step by step
After the inspection, everything we found is written up as a report with photographs. On timing, most surveys take as long as needed for the membrane area and the build-up, which we set out in the quote. A visit to Chells is planned like any other: the time, the access and where to park are agreed beforehand. Visits can be on weekdays, Saturdays or Sundays. Tell us about any garages, outbuildings or extensions you want included.
- We ask about the roof, its age, its membrane and where leaks appear inside.
- We check that the membrane and build-up suit electronic leak detection.
- The testing method is chosen to suit the membrane and build-up.
- We test the membrane and find where current is passing through it.
- We send a report with photos of each breach so your roofer can repair it.
Preparing for the visit
- If the roof is shared, arrange access with whoever manages the building
- Keep pets in another room
- Move anything stored under the loft hatch
Getting a price
Our phone lines are open seven days a week. For a price or to book, phone 07833 053749 or drop us an email.
Read more
Why get it checked now?
Cutting open a flat roof to find a leak can cause more damage. Electronic testing finds the hole first, so the repair can be targeted. Around Chells, leaves and moss in gutters lead to overflowing water and damp walls, especially where trees overhang. It’s easy to sort the cause early and slow to dry a damp wall.
For a price for your roof in Chells, phone 07833 053749 or use the contact form and let us know about the roof. The price is agreed before a date is set.
What you get with us
- An independent view of the roof
- A report with photos
- Drones and thermal imaging where applicable
- Visits on any day of the week
Take a look at what a roof survey costs and two real surveys.
Also near Chells
Also in Chells
Common questions in Chells
Are flat-roofed garages and porches in Chells worth including?
Yes, if you’d like it included, mention it as you book. On buildings from before 2000, cement sheet roofs may contain asbestos and should be checked by a specialist asbestos surveyor before anyone disturbs them.
Is Chells within the area you cover?
Yes, smaller places are covered as well as towns. We cover the whole of London and South East England. Let us know about access, parking and anything unusual about getting there when you book.
Is the repair part of the test?
No, our part is finding the breaches. Your roofer uses the report to target the repair.
How do I book a survey in Chells?
It’s easiest to ring 07833 053749 or email us. Give us the address and some details about the roof, and we will take it from there. We survey seven days a week.
Do I have to be there for the survey?
Not necessarily. If we only need the outside, we can agree that in advance, but the loft and any rooms with damp need someone to let us in.
Can you survey at the weekend?
Surveys can be booked for any day of the week: Monday to Friday, Saturdays and Sundays. Just tell us the days that suit you.
Will you go up on the roof?
Only where it is safe to do so. We inspect what can be seen safely: from ground level, from windows and vantage points, from the loft space, from the roof itself where safe and by drone where it applies. The report says if anything couldn’t be seen.
Surveys for landlords and agents in Chells
Letting agents can arrange access with tenants. We survey on weekdays and at weekends, which can make access easier.
We survey roofs for letting agents and landlords as well as homeowners. The report gives you a dated record of the flat roof membrane, with photos.
Electronic leak detection around Chells
Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates, with flat-roofed extensions, dormers and garages common everywhere. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere. Chells is part of Stevenage, one of the post-war new towns. Homes from the post-war decades are common in the new towns, many with low-pitched roofs in concrete tiles and flat-roofed garages or porches. Flat-roofed garages, porches and extensions from that era may have been re-covered more than once, or not at all. Cement sheet roofs on buildings from before 2000 may contain asbestos, so a specialist asbestos surveyor should check them before they’re disturbed.
Take an older house close to St Hugh & St John: the flat roofs on later extensions tend to wear out long before the main roof. Historic houses like Aston Bury, about 2.4 miles south, show how far back building around Chells goes. Older houses nearby often have flat roofs added much later, built to very different standards from the main roof. Landlords with a home close to Stevenage station may find that flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Chells is about 1 mile east of Stevenage, in Hertfordshire. We cover Chells and the rest of Hertfordshire, as part of our work across London and South East England. Across Hertfordshire, we cover Chells and the places around it. There’s also a page for Milton Keynes.
Every address in SG2 and SG1 is covered for electronic leak detection. Whether your property is on Scott Road, Eliot Road and Newton Road or anywhere close by, we can survey it. If you’re just outside Chells, we cover Stevenage (1 mile west), St Nicholas (1 mile north-west), Pin Green (1 mile west), Aston End (1 mile south-east) and Bedwell (1 mile south-west). We also work in nearby towns such as St Albans (13 miles south-west), Bishop's Stortford (14 miles east), Welwyn Garden City (8 miles south), Harpenden (10 miles south-west), Hitchin (5 miles north-west) and Hoddesdon (13 miles south-east).
What’s near Chells
We work in homes and buildings around Lodge Farm Primary School. Chells’s nearest station is Stevenage station, roughly 1.8 miles south-west. Well-known places in the area include Lister Hospital (2.1 miles north-west) and Benington Castle (2.4 miles south-east). Open spaces near Chells include Pryor's Wood.
Before and after the survey
A few practical points come up again and again on our surveys. They’re worth knowing whatever the roof:
- Get leaks traced quickly
- Check new waterproofing before handover
- Make sure trades protect the waterproofing
- Stay off the flat roof unless needed
Questions about the results are welcome. We can talk you through the findings.
Keep outlets and gutters on flat roofs clear. Water that sits on the roof finds breaches faster.