Hertfordshire · London and the South East
Electronic Leak Detection in Clothall
Electronic leak detection in Clothall from an independent, experienced roof surveyor. Over 5,000 surveys and 20+ years behind us across London and South East England.
- Damp inside with no sign on the roof
- Gaps at membrane joints
- New membranes needing a check before handover
Electronic leak detection in Clothall: what you get
ELD can be carried out in more than one way. Low-voltage testing is typically done with the surface wet, while high-voltage testing needs a dry, exposed membrane. The right method depends on the membrane and the build-up of the roof and we explain which we’ll use. We’ll say if your roof doesn’t suit either method at the outset. We’re often asked to look into water coming in under a flat roof and damage from equipment installers, across commercial flat roofs, single-ply roofs and flat roof membranes.
Some older homes in villages like Clothall are listed or in a conservation area, and that can affect how an extension roof or dormer is re-covered. If you are planning work, check with the council first. Finding out what state the roof is in gives you the facts to plan with. Changes that affect a listed building’s special interest need listed building consent.
We keep jargon out of it: if work is needed, the report says so clearly, and where it can wait, that is said too.
- Place
- Clothall (SG7)
- Region
- Hertfordshire
- Price
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- Appointments
- Weekdays, Saturdays and Sundays
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Do you need electronic leak detection in Clothall?
Flat roof membranes can be punctured by foot traffic, dropped tools or debris. Some are too small to see but water still finds them.
A survey can pick up problems such as:
- Leaking laps in the waterproofing
- Waterproofing to test before it’s covered
- Holes around roof penetrations
- Damp inside with no sign on the roof
If you let a flat or house near Baldock station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
What to check before booking
- Whether the inside of the roof is included
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
- When you will get the report
- Are they insured for the work?
Common questions in Clothall
Is Clothall within the area you cover?
Yes, Clothall is on our map. Villages and rural addresses get the same survey as a town house, with the route planned beforehand.
How do I find out if my home in Clothall is listed?
The council and Historic England’s list are the places to check. Either can affect what roof work is allowed, so it’s worth checking before planning any.
Will you walk on the roof?
Only when it is safe. Some roofs are too steep or fragile to walk on safely. We use safe viewpoints, the roof space and a drone where it applies.
Is it the same as a RICS Level 2 or Level 3 survey?
No. It is a specialist roof survey, not a RICS Level 2 or Level 3 building survey. It focuses on the roof, so it sits alongside a building survey rather than replacing it.
Are you structural engineers?
No. We point out what can be seen, like sagging or deflection, but we are not structural engineers and don’t carry out calculations. Where an engineer is needed, we say so in the report.
Is this an asbestos survey?
No. We do not sample or test for asbestos. Where a material might contain it, such as old cement sheets on a building from before 2000, the report flags it.
Will you check the loft?
Where it’s relevant to the survey and there is safe access, yes. A clear path to the hatch helps.
Places near Clothall
Other services in Clothall
Honest limits
Some things cannot be seen without opening up the roof, so a survey has limits:
- Leaks from plumbing or windows
- Sections we can’t safely access
- Moisture spread under the membrane
If you are not sure which survey you need, call 07833 053749 or drop us an email and we will give you a straight answer before booking. The full list of what we check.
Roofs we survey in Clothall
- Flat roof membranes
- Single-ply roofs
- Liquid-applied waterproofing
- Green roofs
- Roof terraces and balconies
- Commercial flat roofs
Electronic leak detection around Clothall
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. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. Older buildings may be listed or sit in a conservation area. To find out, check Historic England’s list and ask the council about conservation areas. In either case, a change of roofing material may need consent.
If you look after a building such as Weston Primary School, a large flat roof with a good many outlets and rooflights has many places where a membrane can fail. The streets around a church such as Church of St Mary are frequently among the oldest in a place, and if your home is one of the older ones nearby, flat-roofed rear additions and dormers added over the years are worth checking.
Clothall is about 3 miles east of Letchworth, in Hertfordshire. We provide electronic leak detection for householders, landlords and businesses in Clothall and the surrounding area. Clothall is one of the towns and villages in Hertfordshire we cover. You can also see our page for Milton Keynes.
All of SG7 is within our area for electronic leak detection, from the main roads to the quietest streets. Nearby, we also carry out electronic leak detection in Weston (1 mile south-west), Wallington (2 miles north-east), Baldock (2 miles north-west), St Nicholas (3 miles south) and Rooks Nest (4 miles south-west). We also work in nearby towns such as Stevenage (4 miles south), Bishop's Stortford (15 miles south-east), Welwyn Garden City (12 miles south), Harpenden (14 miles south-west), Hitchin (5 miles west) and Hatfield (15 miles south).
Around Clothall
We work in homes and buildings around The Knights Templar School. The closest station to Clothall is Baldock station, roughly 2.2 miles north-west. A little further out are First Garden City Heritage Museum (3.1 miles west) and Clothall Castle (less than half a mile south-east). The countryside around Clothall includes Pryor's Wood.
What affects the price in Clothall
To price your survey, we look at:
- The height of the building and how the roof can be seen safely
- The shape of the roof and its details
- The size of the roof
- Extra roofs, like extensions, dormers or garages
Every price we give includes VAT. We quote electronic leak detection for each roof, as the method and time depend on the roof. We confirm the exact price before booking.
What to let us know when you contact us
We’ll typically ask about:
- What kind of property and roof it is
- The address and postcode of the property
- Any stains, drips or damp patches you’ve seen indoors
- Pictures from the garden or a window, if you have them
Every survey is priced before it’s booked, so you know where you stand. Electronic leak detection is quoted for your roof, because the method depends on the roof. For a price for your roof, phone 07833 053749 or email us.
Different roofs, different checks
EPDM rubber roofs
ELD on EPDM depends on the product and the layers. We look at this first.
Bituminous membranes
Older felt roofs often have seams and patches where breaches occur. Testing depends on the roof.
How the survey works
We photograph the roof as we go, so you can see in the report what we found and where. Close-ups come from the safest viewpoint available, including by drone where it is applicable and the weather allows. Most surveys take longer on a large roof than a small one, and the build-up of the roof makes a difference too. In a hamlet or village like Clothall, 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.
- We start with what you know about the roof and the leak.
- We check whether the membrane and build-up suit ELD.
- The test method is chosen to suit the roof.
- We test the roof and locate any breaches.
- You get a report with photos of each breach.
Before we arrive
- If you are buying, check with the agent that we can get in
- Dig out any old roof reports or invoices
- Point out any leaks or damp patches
Arrange a survey
We survey roofs on weekdays, Saturdays and Sundays. To find a date that works for you, call 07833 053749 or drop us an email.
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Before and after the survey
These tips come from what we see on roofs every week:
- Act on new leaks promptly
- Stay off the flat roof unless needed
- Tell us about the membrane and build-up if you know it
- Check trades protect the waterproofing
After your roofer repairs the breaches, a retest can confirm them if the build-up allows.
Ask trades working on the roof to protect the membrane when they work up there. Check the roof after they’ve finished.