Oxfordshire · London and the South East
Chalgrove Electronic Leak Detection
We take a careful look at the flat roof membrane at your property in Chalgrove, and put it all in a report with photographs.
- Holes around roof penetrations
- Repairs that haven’t stopped the leak
- New membranes needing a check before handover
How electronic leak detection works in Chalgrove
There are different ELD methods. Low-voltage testing is typically done with the surface wet and high-voltage methods need the membrane dry and exposed. Which one suits depends on the membrane and the layers of the roof, and we’ll explain our choice. If neither method suits your roof, we’ll tell you before any testing starts. We survey green roofs, roof terraces and balconies and liquid-applied waterproofing, and the problems we’re asked to look at most are waterproofing to test before it’s covered and leaks through a covered membrane.
In a smaller place like Chalgrove, some flat roofs sit in the open, where wind can catch loose edges and trims. Felt and bitumen also age in strong sun. Splits, blisters and lifting edges are what to look out for, along with water that sits after rain. A flat roof that still holds water days after rain is also worth a closer look.
We write the report in plain English, so it makes sense without any roofing background. Each point is backed by a photo where possible.
- Location
- Chalgrove (OX44)
- Region
- Oxfordshire
- Cost
- Quoted for your roof
- Report
- A written report with photos, by email
- Survey days
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Electronic leak detection in Chalgrove: local notes
Adwell House, about 4 miles north-east, is one of the historic houses in the wider area around Chalgrove. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and the council can say whether a home is in a conservation area. Older buildings in west Oxfordshire often have Cotswold stone slate roofs, and some Oxfordshire villages still have thatch. Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises.
If you live in an older home near Church of St Mary, the joins between later flat roofs and the old walls are where problems typically start.
Chalgrove is about 7 miles south-west of Thame, in Oxfordshire. Surveys in Chalgrove work the same way as everywhere we cover: a close look at what can be seen safely, photographs and a clear written report. Our Oxfordshire coverage includes Chalgrove and the places around it. For surveys nearby, see our Oxford page.
Here we cover the OX44 postcode area for electronic leak detection. That includes homes and businesses on High Street, Chapel Lane and The Green. Chalgrove is on the B480, which makes it simple to reach. We also cover the places around Chalgrove: Brightwell Baldwin (2 miles south-east), Roke (2 miles south), Britwell Salome (3 miles south-east), Pyrton (3 miles east) and Watlington (3 miles south-east). Larger places within reach include Oxford (9 miles north-west), Didcot (8 miles south-west), Abingdon-on-Thames (9 miles west), Thame (7 miles north-east), Henley-on-Thames (12 miles south-east) and Grove (15 miles west).
Around Chalgrove
In Chalgrove, that means homes and buildings near The Red Lion Public House, among other places. Well-known places in the area include Wallingford Castle (4.8 miles south) and Aston Martin Heritage Trust Museum (2.5 miles west). Not far away are Wells Farm.
Before and after the survey
A little preparation and a few simple habits help. Our tips:
- Do not keep patching the same spot
- Record dates and spots where water appears
- Act on new leaks promptly
- Tell us about the membrane and build-up if you know it
Keep the report with the roof’s records. It’s a dated record of the membrane’s condition.
Keep people off the flat roof unless they need to be there. Many breaches come from foot traffic.
Roof by roof
Inverted and paved roofs
Paving and terraces cover the membrane. Suitability depends on the layers.
Bituminous membranes
Older felt roofs often have seams and patches where breaches occur. We test where the roof suits it.
Honest limits
Our findings are based on what we can see safely on the day, so some things are outside what a survey can do:
- Carrying out the repair work
- Leaks from walls, copings or rooflights
- Parts of the roof covered by fixed equipment
If you’re not sure which survey you need, ring 07833 053749 or drop us an email and we’ll give you a straight answer before you book. The full list of what we check.
Roofs we survey in Chalgrove
- Commercial flat roofs
- Roof terraces and balconies
- Liquid-applied waterproofing
- Flat roof membranes
- Green roofs
- Single-ply roofs
Surveys for landlords and agents in Chalgrove
Landlords and agents in Chalgrove book surveys as well as householders. The report gives you a dated record of the flat roof membrane, with photographs, which helps you plan work between tenancies.
If the property is let, the agent or a tenant can let us in. Surveys run on weekdays, Saturdays and Sundays, which can make access easier.
When to book a survey in Chalgrove
A breach can be left during installation. ELD on a new roof can show holes before they cause leaks.
Most people get in touch when they’ve noticed one of these:
- Holes left by work on the roof
- Gaps at membrane joints
- Leaks through a covered membrane
- Patched roofs that still leak
Take a building like Chalgrove Community Primary School: large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Choosing a roof surveyor
- Their track record with similar roofs
- Whether any drone flown is registered with the CAA
- Are they insured for the work?
- Is VAT included in the price?
Chalgrove questions
Is Chalgrove within the area you cover?
Yes, we do. Our area covers London and the South East, from towns to the smallest villages. Longer journeys are simply planned beforehand.
Does a conservation area affect roof work in Chalgrove?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. It matters most if you are planning to re-roof in a different material.
Does someone need to be in?
It depends on what we need to see. For inside areas and the roof space, someone has to give us access.
What’s the price of ELD?
Each roof is quoted on its size and build-up. Let us know about the roof and where it leaks. Just call 07833 053749 or use the contact form for a quote.
Do you take photos of the roof?
Yes. The report includes photos of what we found.
Can you tell me if my roof has asbestos?
No. Asbestos surveys and testing aren’t part of what we do. If we see materials that could contain asbestos, such as cement roof sheets or soffits on buildings from before 2000, we flag them, and recommend a specialist asbestos surveyor checks them before they’re disturbed.
How long does electronic leak detection take?
It typically takes a length of time set by the membrane area and the build-up, which we set out in the quote.
What we do, step by step
Expect us to ask a few questions before we start, such as when any problem began and what work has been done before. The inspection then takes longer on a large roof than a small one, and the build-up of the roof makes a difference too. With a bit of garden around a house, as there frequently is around Chalgrove, the roof can be viewed from several angles. Mention any side of the property we cannot get to. The loft, where there’s safe access, completes the picture.
- We start by finding out what the roof is made of and where it leaks.
- 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.
- You get a report showing where each breach is, for your roofer to repair.
Preparing for the visit
- Let us know where we can park nearby
- Make sure the loft hatch can be reached
- If the roof is shared, arrange access with whoever manages the building
How to book
For a price for electronic leak detection in Chalgrove, call 07833 053749 or use the contact form. A few details about the property and the roof help us give you an accurate price.