Greater London · London and the South East
Osterley Electronic Leak Detection
Electronic leak detection across Osterley, with over 20 years’ experience behind it. You get a clear report with photos.
- New roofs to check before paving or planting
- Leaks through a covered membrane
- Repairs that haven’t stopped the leak
Why get it checked now?
Some breaches are too small to see. ELD picks up breaches a visual check might miss where the roof suits it. Any roof job in Osterley means planning around parking, neighbours and access. That is a good reason to find problems early, while there is time to plan, rather than in a rush after a leak.
To find out what your survey will cost, phone 07833 053749 or drop us an email and tell us about the roof. We will confirm the figure before booking.
Why choose Independent Roof Survey in Osterley
- Two decades and more of roof surveys
- Plain-English reports with photos
- Surveys on weekdays and at weekends
- 98% of customers satisfied
Read our cost guide and two real surveys.
About our electronic leak detection in Osterley
Electronic testing locates holes in the waterproofing, not every cause of water getting in. Water coming through walls, copings, rooflights or plumbing will not show on the test. We will tell you if we think the leak is coming from somewhere else. The test shows breaches in the membrane, not water coming through masonry or around frames. The report makes clear what was and wasn’t tested. You’ll also know what to check next. If you are worried about a flat roof leak that can’t be traced and gaps at membrane joints, we can find out what’s behind it, on single-ply roofs, green roofs and roof terraces and balconies alike.
Across London, flat roofs are everywhere, from back additions and dormers to roof terraces, blocks of flats and offices. They’re covered in felt, asphalt, EPDM rubber, GRP fibreglass or single-ply membranes, and each fails in its own way. In Osterley, as anywhere in London, the right approach depends on what the roof is made of. Many older flat roofs are felt or asphalt, and many newer ones EPDM rubber or GRP.
The report doesn’t just list problems. For each finding, it explains what it is, why it matters and what we’d recommend, so you can plan your next steps.
- Place
- Osterley (TW7, TW3, TW5)
- Region
- Greater London
- Cost
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
Roof by roof
Liquid-applied waterproofing
Testing a liquid-applied roof depends on what’s beneath the coating.
Inverted and paved roofs
Paving and terraces cover the membrane. Whether it can be tested depends on the build-up.
Honest limits
Every survey has limits, and we’d rather be clear about that before booking. Bear these in mind:
- Repairing the breaches (that’s for your roofer)
- Parts of the roof covered by fixed equipment
- Build-ups without a suitable layer below
If in doubt, ring 07833 053749 or drop us an email and we’ll suggest the right survey. What a survey covers and does not.
Roof types and parts we check
- Single-ply roofs
- Green roofs
- Liquid-applied waterproofing
- Flat roof membranes
- Roof terraces and balconies
- Commercial flat roofs
Towns and villages near Osterley
What else we do in Osterley
Rented homes, blocks and businesses
We also survey roofs for businesses and commercial landlords, from shops and offices to industrial units. Larger roofs take longer, and they’re priced for the size.
We survey roofs for landlords and agents as well as homeowners. A photo-illustrated written report gives you a clear record of the flat roof membrane, which helps you plan work between tenancies.
Flat and commercial roofs around Osterley
Outer London has lots of Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, frequently with hipped roofs in clay or concrete tiles. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. The wider area around Osterley has a long history of building, with Osterley House about 0.3 miles north. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs.
For site and facilities teams at buildings such as Isleworth and Syon School for Boys, large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly. Shop and office owners around Treaty Centre may find that outlets and upstands on commercial flat roofs are the places to check before trouble starts. The streets around a church such as St Mary's Church are frequently among the oldest in a place, and if you own one of the older houses nearby, the joins between later flat roofs and the old walls are where problems usually start.
Osterley is about 1 mile north of Hounslow, in Greater London. We survey roofs in Osterley and the surrounding area as part of our work across London and South East England. Our area takes in places right across Greater London. There is also a page for London.
All of TW7, TW3 and TW5 is within our area for electronic leak detection. You’ll find streets such as Jersey Road, Church Road and Gresham Road. We also cover the places around Osterley: Spring Grove (1 mile south-east), Lampton (1 mile south-west), Norwood Green (1 mile north-west), Gillette Corner (1 mile east) and Woodlands (1 mile south). Larger places within reach include London (11 miles east), City of Westminster (9 miles east), Marylebone (9 miles east), Kensington (6 miles east), St Pancras (10 miles east) and Shoreditch (12 miles east).
What’s near Osterley
We work in homes and buildings around The Plough Public House, Spring Grove Primary School and Inwood Park. For rail, the closest station is Isleworth station, roughly 0.9 miles south-east of the centre. A little further out are Museum of Army Music (2.1 miles south) and West Middlesex University Hospital (1.3 miles south-east). Not far away are Castlebar Hill and Garden Lake.
DIY checks: what’s safe
The one thing to avoid is getting up close. Roofs are fragile and slippery. That part is for a survey.
Look up at the roof after a storm, from ground level: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Leave anything above ground level to a survey.
What we do, step by step
Once we have finished looking, we write up our findings as a report with photographs, emailed to you. On timing, it typically takes longer on a large roof than a small one, with the construction of the roof playing a part too. In a London area like Osterley, the main things to sort out are parking and access: let us know about permits, visitor bays or off-street space, which floor the property is on and how to get into the loft. On the day, the roof is looked at from the ground, from windows, from inside the roof space and from the roof where it’s safe.
- First, we confirm which roof areas are included.
- The surface is prepared for the chosen method.
- Testing runs across the agreed area.
- We mark the breach locations in our records.
- The report is sent for your roofer to act on.
Before the survey
- If the roof is shared, arrange access with whoever manages the building
- Tell us about parking before the day
- Have any questions written down, so nothing gets missed
Booking a survey
You can call us seven days a week, including Saturdays and Sundays. To book or ask a question, call 07833 053749 or email us.
Read more
Your questions about electronic leak detection in Osterley
Is my home in Osterley listed or in a conservation area?
Your council is the best source, with Historic England’s list for listed buildings. A change of roofing material may need consent in either case.
Can parking be tricky for a visit in Osterley?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available as you book.
Can you find leaks on a covered flat roof?
On some roofs, yes. What sits on the membrane affects the method so we look at the roof first.
What’s in the report?
You get our findings in writing, part by part, with photos, and ends with what we recommend. Points are put by urgency where it matters.
What do I do with the report?
The report comes by email, and you decide the next step: use it with a seller, an insurer, a roofer or a managing agent.
How many surveys have you done?
More than 5,000 surveys over 20+ years, across London and South East England.
Can you tell me if my roof has asbestos?
No. We don’t sample or test for asbestos. The report may flag materials that could contain asbestos on buildings built or refurbished before 2000.