Oxfordshire · London and the South East
Electronic Leak Detection in Harwell
Wondering about the flat roof membrane at a property in Harwell? We carry out electronic leak detection in Harwell and across Oxfordshire, with plain-English findings.
- Leaks through a covered membrane
- Gaps at membrane joints
- Repairs that haven’t stopped the leak
What electronic leak detection looks like in Harwell
What can be done to an older roof may depend on listing or a conservation area. Your council and Historic England’s list will tell you where you stand. Cotswold stone slates are found on older buildings in west Oxfordshire, and thatch survives in some of the county’s villages. Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
For site and facilities teams at buildings like Harwell Primary School, a large flat roof with lots of outlets and rooflights has many places where a membrane can fail. The streets around a church such as Church of St Matthew are often among the oldest in a place, and if your house is among the older ones nearby, the flat roofs on later extensions tend to wear out long before the main roof.
Harwell is about 2 miles west of Didcot, in Oxfordshire. Harwell is one of many places we visit across Oxfordshire, for homes and businesses alike. Our Oxfordshire coverage includes Harwell. There is also a page for Oxford.
Electronic leak detection in OX11 work the same way as everywhere else we cover. That includes homes and businesses on High Street, Loder Road and The Styles and the roads around them. Other places close to Harwell include West Hagbourne (2 miles south-east), Coscote (2 miles east), Upton (2 miles south-east), Chilton (2 miles south) and East Hagbourne (2 miles east). Further out, we also cover Oxford (11 miles north), Abingdon-on-Thames (5 miles north), Witney (15 miles north-west), Wantage (6 miles west), Grove (6 miles west) and Faringdon (13 miles west).
Around Harwell
In Harwell, that means homes and buildings near The Crispin pub, UTC Oxfordshire and UTC Oxfordshire, among other places. Harwell’s nearest station is Didcot Parkway station, roughly 2.3 miles east of the centre. Nearby you will also find Atlas Computer Laboratory (2 miles south-west) and Abingdon Community Hospital (4.8 miles north). Not far away are Churn Hill and Mowbray Fields.
Electronic leak detection for homes and businesses in Harwell
A leak in a flat roof frequently shows up a long way from where the water gets in. So the stain inside rarely sits under the hole. Electronic leak detection tests the membrane itself and locates the breach. We test and report and leave the repair to your roofer. On a suitable roof, it takes the guesswork out of finding the hole. The results then follow in a written report with photos. We survey flat roof membranes, liquid-applied waterproofing and single-ply roofs, and common reasons people get in touch are damage from equipment installers and water coming in under a flat roof.
Flat roofs in smaller places like Harwell can be more exposed, particularly where nothing shelters them, so wind catches loose edges and trims. Felt and bitumen also age in strong sun. The signs are splits, blisters and edges coming away. A flat roof that still holds water days after rain is also worth a closer look.
The report doesn’t just list problems. It explains what we found, why it matters and what we recommend, so you can plan your next steps.
- Where
- Harwell (OX11)
- Wider area
- Oxfordshire
- Price
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- When we survey
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
Towns and villages near Harwell
What else we do in Harwell
Checking the roof from ground level
Fresh stains on ceilings or walls after rain are worth noting. Take a photo and write down when you saw it, which helps when we check the roof.
Inside, the loft is a good place to look, with care. Use a torch and stay on the joists or boards, checking for stains, damp wood or chinks of daylight.
Common questions in Harwell
Will you come out to Harwell?
Yes, we do. We survey roofs across London and South East England, from towns to the smallest villages. The journey is planned ahead, so it is useful to know about access.
How do I find out if my home in Harwell is listed?
For listing, use Historic England’s list; for conservation areas, ask the council. It matters most if you’re planning to re-roof in a different material.
Do you look in the roof space?
If there is a loft and safe access to it, yes. The roof space can show things the outside cannot, like damp timbers, staining or daylight.
How long will testing take?
Testing usually takes as long as needed for the roof’s area and construction, and we’ll give you a guide when quoting.
Which days do you carry out surveys?
Visits run seven days a week in the daytime, which suits people who work during the week. Just say which days work for you.
What insurance do you have?
We hold professional indemnity and public liability insurance.
How experienced are you?
We have more than 20 years’ experience and have carried out more than 5,000 surveys.
Tips from our surveys
Small things make a difference, both for the survey and for the roof itself. Some pointers:
- Check new waterproofing before handover
- Limit access to the roof
- Get leaks traced quickly
- Find the breach before more patching
Questions about the results are welcome. We’ll explain what was found and what it means.
Limit foot traffic on flat roofs. Many breaches come from foot traffic.
Do you need electronic leak detection in Harwell?
Seams are a common weak point in flat roof waterproofing. Small openings at laps can leak for months before it shows.
Most people get in touch after spotting something like this:
- New roofs to check before paving or planting
- Repairs that haven’t stopped the leak
- Leaks through a flat roof with no obvious cause
- Leaks through a covered membrane
If you let a flat or house near Didcot Parkway station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
Choosing a roof surveyor
- How long they’ve been surveying roofs
- Whether VAT is added on top
- How soon the report will arrive
- Whether they hold professional indemnity and public liability insurance
Honest limits
No survey can tell you everything, and it’s better to know them up front. Bear these in mind:
- Roofs whose membrane or build-up isn’t suitable
- Moisture spread under the membrane
- Water entering through details rather than the membrane
If you are not sure which survey you need, call 07833 053749 or send us an email and we will give you a straight answer. The full list of what we check.
What this survey covers
- Roof terraces and balconies
- Commercial flat roofs
- Flat roof membranes
- Single-ply roofs
- Liquid-applied waterproofing
- Green roofs
Why it’s worth a survey now in Harwell
Water trapped under a membrane can soak insulation and decking. Finding the breach sooner limits that. Tradespeople may need to travel further to a smaller place like Harwell, so it is useful to plan roof work rather than call someone out in a hurry. Knowing early gives you time to get the right people in.
The cost of a survey depends on the roof: its size, its height, how many sections it has and how safely it can be seen. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Why choose Independent Roof Survey in Harwell
- Satisfaction rate of 98%
- Photos and a written report every time
- Weekday and weekend surveys
- 5,000+ surveys completed
Read our cost guide or two real surveys.
What we do, step by step
The visit normally starts outside and finishes in the loft: first the slopes, edges and gutters from every safe viewpoint, then the loft space where it can be reached. In total, it takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. Homes around Harwell frequently have gardens on more than one side, which gives us room to step back and see the roof. Let us know if any side is fenced off or hard to reach. The loft, where there is safe access, completes the picture.
- You tell us about the roof and where water is showing.
- The roof is assessed for suitability first.
- We choose a low-voltage or high-voltage method to match the roof.
- We test the roof and locate any breaches.
- You get a report with photos of each breach.
Preparing for the visit
- Tell us about any leaks, stains or damp patches you know of
- Agree roof access with the managing agent if it’s shared
- Move anything stored under the loft hatch
Booking a survey
To arrange a survey, phone 07833 053749 or email us with the address and what you’d like to know about the roof. We will confirm the price before you book.