Hampshire · London and the South East
Thedden Electronic Leak Detection
Know where you stand with the flat roof membrane before you decide what to do next. We carry out electronic leak detection in Thedden, with photographs and a clear written report.
- New membranes needing a check before handover
- A flat roof leak that can’t be traced
- Leaking laps in the waterproofing
Your questions about electronic leak detection in Thedden
Will you come out to Thedden?
Yes, smaller places are covered as well as towns. Our area covers London and South East England. Just mention lanes, gates or anything else about the route when you book.
Is Thedden in the area you cover?
Yes. We survey roofs across London and South East England, and Thedden is part of that. You can phone 07833 053749 or email us with the address and a few details, and we’ll talk through which survey suits.
How soon will I get the report?
It depends on the package: Basic within 48 hours, Standard in 24–48 hours and Premium the same day. The report is emailed to you.
How much time does ELD need?
Testing normally takes longer on a large roof than a small one, with the construction of the roof playing a part too.
Does this replace a RICS home survey?
No. We check the roof, not the whole building, so it is not a RICS Level 2 or Level 3 survey. It can sit alongside a RICS survey if you want both.
Do you need to get into the loft?
Where it is relevant to the survey and there’s safe access, yes. Please clear anything stored under the hatch.
Is this an asbestos survey?
No. Our report may flag materials that could contain asbestos, but only a specialist asbestos surveyor can confirm it. It may be present in buildings built or refurbished before 2000.
How electronic leak detection works in Thedden
ELD suits many waterproofing membranes on flat roofs, on homes, blocks and commercial buildings. It can be used to trace an existing leak or check a new membrane before handover. 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. Tell us about your roof to find out more. Typical surveys look at waterproofing to test before it’s covered and repairs that haven’t stopped the leak, on roof terraces and balconies, liquid-applied waterproofing and green roofs.
Older buildings in small places like Thedden may be 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.
Where we cannot see part of the flat roof membrane, the report says so. You’ll know exactly what was inspected and what wasn’t.
- Where
- Thedden (GU34)
- Wider area
- Hampshire
- Cost
- Quoted for your roof
- Report
- A written report with photos, by email
- Appointments
- Weekdays and weekends
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
How we price electronic leak detection
What a survey costs depends on the time and equipment it needs. That comes down to:
- Extensions, dormers and garages with roofs of their own
- Features like valleys, chimneys, dormers and parapets
- Whether it’s a home or a commercial building
- Height and safe access
The cost of a survey depends on the roof: its size, its height, how many sections it has and how it can be reached and seen safely. We quote electronic leak detection for each roof, as the method and time depend on the roof.
Booking your survey
If you can, have these to hand when you get in touch:
- The property’s address and postcode
- Whether there’s a loft hatch, a shared roof or tricky access
- The kind of building and roof involved
- Your timetable, like an exchange date
If you are buying, it helps to book soon after your offer is accepted, so there is time to use the report before exchange. For any other survey, just phone 07833 053749 or use the contact form when you’re ready.
When you need someone else
A survey is a careful look at the flat roof membrane, but it cannot do everything. The main limits are:
- Carrying out the repair work
- Leaks from walls, copings or rooflights
- Build-ups without a suitable layer below
Not sure which survey suits your roof? You can ring 07833 053749 or drop us an email and we’ll tell you before you book. The full list of what we check.
Roof types and parts we check
- Roof terraces and balconies
- Liquid-applied waterproofing
- Commercial flat roofs
- Green roofs
- Flat roof membranes
- Single-ply roofs
What happens on the day
It helps to start with what’s prompted the survey: buying, a leak, storm damage, new work or just wanting to know where things stand. That way we can focus on what matters to you. The visit normally takes a time that depends on the size of the roof and how it’s built, and we’ll give you a guide when quoting. In a small place like Thedden, access is usually the main thing to plan. Mention any outbuildings, barns or garages you want included, and anything about the roof you already know. Weekday and weekend visits are available.
- We start by finding out what the roof is made of and where it leaks.
- The roof is assessed to see if electronic testing will work on it.
- We pick the low-voltage or high-voltage method that suits the roof.
- Testing runs across the roof to locate breaches in the membrane.
- We send a report with photos of each breach so your roofer can repair it.
Preparing for the visit
- Make sure the loft hatch can be reached
- Note where any stains or damp appear
- For a flat or shared roof, check access with the building owner or managing agent
Booking a survey
Every survey is priced before it is 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, call 07833 053749 or email us.
Read more
What electronic leak detection looks like in Thedden
Historic houses such as Bentworth Hall, about 1 mile west, show how far back building in the area around Thedden goes. If you own one of the older houses, expect a mix of original materials and later repairs on the roof. Thatch survives on some older buildings in Hampshire’s villages. Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
If you live in an older home near St Peter's, the joins between later flat roofs and the old walls are where problems usually start. Landlords with a home close to Alton station may find that the flat roof over a let home is worth a look before it becomes a tenant complaint. For site and facilities teams at buildings like Amery Hill School, schools and public buildings frequently have big flat roofs, and their outlets and upstands need regular checks.
Thedden is about 2 miles west of Alton, in Hampshire. Wherever you are in Thedden, we can come and survey your property. Thedden is one of the places in Hampshire where we work. We also survey roofs in Reading.
Here we cover the GU34 postcode area for electronic leak detection. Other places close to Thedden include Beech (1 mile south-east), Wivelrod (1 mile south-west), Bentworth (1 mile north-west), Holt End (1 mile west) and New Copse (2 miles west). We also work in nearby towns like Basingstoke (9 miles north), Winchester (14 miles south-west), Farnborough (15 miles north-east), Fleet (12 miles north-east), Aldershot (13 miles north-east) and Petersfield (10 miles south).
Around Thedden
Thedden’s nearest station is Alton station, roughly 2.6 miles east of the centre. A little further out are Alton Community Hospital (1.6 miles east) and Barton Castle (3.9 miles west). Open spaces near Thedden include King's Hill.
Practical tips
Here are a few things we’d tell any owner:
- Check new waterproofing before handover
- Don’t let outlets block
- Get leaks traced quickly
- Use boards when working on the roof
If we think the leak isn’t coming through the membrane, the report says so, so other causes can be checked.
Keep outlets and gutters on flat roofs clear. Water that sits on the roof finds breaches faster.
What you can safely check yourself
After strong wind, take a look from the pavement or garden: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Do not go up yourself.
A DIY look is useful, but it isn’t a survey. From the ground, valleys, flashings and the backs of chimneys are frequently out of sight, and those are details a survey looks at closely.
More services for Thedden
Why act early in Thedden
Patching where you think the leak is frequently misses it. Testing shows where the membrane is actually breached. Outbuildings and barns around Thedden are easy to forget, but a failed roof there can spoil what’s stored inside. It is worth including them in a survey before a winter does the damage.
To find out what your survey will cost, ring 07833 053749 or email us with the address and a few details. We will confirm the figure before booking.
What you get with us
- PI and public liability insurance
- 98% customer satisfaction
- Surveys on weekdays and at weekends
- Every finding written up with photos
Take a look at how roof surveys are priced or our case studies.