Oxfordshire · London and the South East
Electronic Leak Detection in Mongewell
Electronic leak detection in Mongewell from an independent, experienced roof surveyor. Over 5,000 surveys and 20+ years behind us.
- Failed seams and laps
- Leaks through a covered membrane
- Patched roofs that still leak
Electronic leak detection in Mongewell: what you get
ELD is a way of pinpointing breaches in a flat roof’s waterproofing membrane. It uses a small electrical current that passes through the membrane only where there is a breach. It can find holes too small to spot by eye, so your roofer can repair them. You get a written report with photographs of each breach found. We’re frequently asked to look into gaps at membrane joints and breaches hidden under paving or planting, on green roofs, flat roof membranes and commercial flat roofs.
In a small place like Mongewell, a flat roof can stand in the open, so edges, upstands and laps take a beating. Felt roofs, which frequently last around 15–20 years, usually show it first. EPDM rubber and GRP coverings last longer, but their edges and joints still need checking. On an exposed roof, the edges tend to go first.
Every survey ends with a written report, with photos, emailed to you. It explains the condition of the flat roof membrane, the defects we found and what we recommend.
- Location
- Mongewell (OX10)
- Wider area
- Oxfordshire
- Cost
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- When we survey
- Weekdays, Saturdays and Sundays
- Insurance
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
DIY checks: what’s safe
Keep a simple record: when leaks happen, ground-level photos and any past roof work. Send it with your enquiry.
Fresh stains on ceilings or walls after rain are worth noting. Photograph them and note the date, as it helps a surveyor trace the cause.
Places near Mongewell
Also in Mongewell
Prices for electronic leak detection in Mongewell
A few things affect what a survey costs:
- Features like valleys, chimneys, dormers and parapets
- Extra roofs, like extensions, dormers or garages
- House, block, shop or office
- Building height and the viewpoints available
The cost of a survey depends on the roof: how big it is, how high it is, the number of separate roofs 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.
What to tell us when you contact us
Getting the details right at the start saves time. It helps to include:
- When you need the report by
- Any marks or damp showing indoors
- Anything about access we should know
- Photos of the roof, taken safely from the ground or a window
Booking is simple: just phone 07833 053749 or drop us an email, tell us about the property and we’ll recommend the right survey. We confirm the price before anything is booked.
Do you need electronic leak detection in Mongewell?
A breach can be left during installation. ELD on a new roof can show holes before they cause leaks.
Common reasons to book include:
- Breaches hidden under paving or planting
- Waterproofing to test before it’s covered
- Patched roofs that still leak
- Failed seams and laps
Take a building like Crowmarsh Gifford Church of England School: large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Before booking anyone
- Whether VAT is added on top
- Whether any drone flown is registered with the CAA
- How much experience they have with roofs like yours
- Their insurance cover
What happens on the day
After the inspection, everything we found is written up as a written report with photos, sent to you by email. On timing, it usually takes as long as needed for the size of the roof and how it’s built, which we set out in the quote. Rural addresses near Mongewell can be hard to find from a postcode alone, so a few directions, or a note of a nearby landmark, help us arrive on time. The visit itself is the same as anywhere else.
- We agree the area to be tested.
- The surface is prepared for the chosen method.
- We work across the roof with the test equipment.
- Each breach found is located and recorded.
- The report is sent for your roofer to act on.
Preparing for the visit
- Mention any parking restrictions on your street
- Dig out any old roof reports or invoices
- Agree roof access with the managing agent if it is shared
Booking a survey
For a price for electronic leak detection in Mongewell, ring 07833 053749 or send us an email. A few details about the property and the roof help us price the survey accurately.
Advice
Honest limits
Before booking, it is worth knowing what a survey won’t do:
- Leaks from walls, copings or rooflights
- Areas we cannot reach or that can’t be tested
- Some conductive membranes
Not sure which survey suits your roof? You can ring 07833 053749 or email us and we’ll tell you before booking. What our survey covers.
Roofs we survey in Mongewell
- Roof terraces and balconies
- Commercial flat roofs
- Green roofs
- Single-ply roofs
- Liquid-applied waterproofing
- Flat roof membranes
Questions from Mongewell
Do you carry out roof surveys in Mongewell?
Yes, Mongewell is within the area we cover. We work right across London and the South East. You can call 07833 053749 or email us with the address and a few details, and we’ll talk through which survey suits.
Will you come out to Mongewell?
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 booking.
Is the repair part of the test?
No. ELD is testing only. You get the breach locations with photos so your roofer can fix them.
Do you survey roofs on blocks of flats?
Yes. A shared roof needs access agreed first. Tell us about it when booking and we will explain what’s needed.
Does someone need to be in?
Not necessarily. If we only need the outside, we can agree that in advance, but anything inside needs someone there to give access.
Do you use low-voltage or high-voltage testing?
The roof decides the method. We will explain why when we quote.
Can you give me structural calculations?
No. Our survey is not a structural engineer’s report, and it does not include calculations. If we see signs that need an engineer’s opinion, we will recommend one.
How the survey changes by roof type
Single-ply membranes
Single-ply can be punctured by tools or fixings. Testing helps find them.
EPDM rubber roofs
Certain rubber membranes are conductive which can limit electronic testing. We’ll say if the test will not work.
Electronic leak detection around Mongewell
Historic houses such as Brightwell Manor, about 2.6 miles north-west, show how far back building in the area around Mongewell goes. Older homes in the wider area often have features worth a closer look, like lead valleys, tall stacks and roofs that have been patched over the years, and any change of roofing material on a listed home needs checking with the council first. Older buildings in west Oxfordshire often have Cotswold stone slate roofs, and some Oxfordshire villages still have thatch. Older houses in the South East frequently have slate or clay tile roofs, while many later estates have concrete tiles. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises.
Take an older house close to St Mary's Church: any flat roof added at the back or on a dormer is likely to be far younger, and less durable, than the main roof. If you let a flat or house near Cholsey station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Mongewell is about 6 miles east of Didcot, in Oxfordshire. We survey roofs in Mongewell across London and South East England. We cover towns and villages across Oxfordshire, from the larger towns to small villages. We also survey roofs in Reading.
All of OX10 is covered for electronic leak detection, from the main roads to the quietest streets. Streets in the area include Hasthorpe Road, Shuttleworth Close and Elizabeth Road, and we cover them all. Neighbouring places we cover for electronic leak detection include Newnham Murren (1 mile north), Crowmarsh Gifford (1 mile north-east), Winterbrook (1 mile south-west), North Stoke (1 mile south) and Cholsey (2 miles south-west). Larger places within reach include Oxford (12 miles north-west), Didcot (6 miles west), Abingdon-on-Thames (9 miles north-west), Thame (12 miles north-east), Wantage (13 miles west) and Henley-on-Thames (10 miles south-east).
What’s near Mongewell
Typical jobs here are in homes near Wallingford School, Wallingford School and The Old Nags Head pub, among other places. Mongewell’s nearest station is Cholsey station, about 2.2 miles south-west. Well-known places in the area include Wallingford Castle (0.9 miles north). The countryside around Mongewell includes Wittenham Clumps and Cholsey Marsh.