Greater London · London and the South East
Brentford Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes in Brentford, carried out by an experienced roof surveyor. You get a clear written report with photos.
- Water coming in under a flat roof
- Leaking laps in the waterproofing
- Holes left by work on the roof
Flat roofs in Brentford
Further from the centre, London’s housing takes in interwar semis with hipped roofs in clay or concrete tiles as well as slate-roofed terraces. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. Brentford has a number of hotels within about a mile and a half. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use.
Take an older house close to Congregational 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 own a rental within reach of Brentford station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
Brentford is about 2 miles south of Ealing, in Greater London. We survey roofs in Brentford as part of our work across London and South East England. We cover towns and villages across Greater London. For surveys nearby, see our London page.
We work across the TW8, W3, W4 and W5 postcode area for electronic leak detection and the streets around it. You’ll find streets like High Street, Market Place and New Road. Brentford sits on or near the A4 and A315. If you are just outside Brentford, we cover Brentford End (1 mile south-west), Northfields (1 mile north-west), Gillette Corner (1 mile west), Isleworth (2 miles south-west) and Spring Grove (2 miles west). Within a short drive, we also cover London (9 miles east), City of Westminster (7 miles east), Marylebone (7 miles east), Kensington (4 miles east), St Pancras (8 miles east) and Shoreditch (10 miles east).
What’s near Brentford
Around Brentford, our work takes us to homes and buildings near Library for Iranian Studies, Brentford School for Girls and Kew College Prep, among other places. Nearby too are The Brook pub (less than half a mile south-west) and Kew Green (0.7 miles south-east). Brentford has its own railway station: Brentford station. A little further out are Treaty Centre (3 miles south-west) and Musical Museum (0.5 miles east). Green spaces nearby include Kew Gardens Lake and Long Wood.
Electronic leak detection in Brentford: what you get
Water can travel under a flat roof membrane before it shows inside. So the stain inside rarely sits under the hole. Electronic leak detection tests the membrane itself, to find where it has been breached. It is testing only and leave the repair to your roofer. On suitable roofs, it replaces guesswork with a located breach. The results then follow in a written report with photos. We’re often asked to look into leaks at pipes, outlets or fixings and new roofs to check before paving or planting, on roof terraces and balconies, green roofs and flat roof membranes.
Commercial and residential blocks across London often have big flat roofs with plant, rooflights and access walkways. Every penetration and upstand is a place where a membrane can fail. In Brentford, roof access is agreed with the building manager or owner beforehand. Rooflights, plant supports and pipe entries are common places for a membrane to fail.
After the visit, you get a written report with photographs, emailed to you. It explains the condition of the flat roof membrane, the defects we found and what we recommend.
- Location
- Brentford (TW8, W3, W4, W5)
- Region
- Greater London
- Cost
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- When we survey
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Page updated
- 27 October 2026
What affects the price in Brentford
Several things affect the price of a survey:
- Height and safe access
- How big the roof is
- Whether thermal imaging or a drone is needed
- The shape of the roof and its details
For a price for your roof in Brentford, ring 07833 053749 or drop us an email with the address and some details. The price is agreed before a date is set.
Helping us price your survey
We will normally ask about:
- The reason for the survey, like buying, a leak or storm damage
- Your postcode, so we can check access and travel
- Photos of the roof, taken safely from ground level or a window
- Any marks or damp showing indoors
To get a price for electronic leak detection in Brentford, phone 07833 053749 or email us. The address, the type of property and what you want to find out help us give you an accurate price.
Useful tips for Brentford property owners
Some practical points come up on survey after survey. They apply to most roofs:
- Ask contractors to protect the membrane
- Consider ELD before paving or planting goes on
- Keep foot traffic on flat roofs to a minimum
- Have roof specifications to hand
Questions about the results are welcome. We can talk you through the findings.
Act on leaks quickly. The longer water gets in, the more insulation and decking can be affected.
Also near Brentford
More services for Brentford
The survey, step by step
Once we’ve finished looking, we write up our findings in a report with photos, sent to you by email. On timing, most surveys take a time that depends on the size of the roof and how it’s built, and we’ll give you a guide when quoting. From the street, a London terrace usually shows only its front slope or parapet, so in Brentford we work round the house, using the street, the windows, the loft and any safe vantage point behind it. If other people live in the building, let us know who can let us into the shared parts.
- We ask about the roof, its age, its membrane and where leaks appear inside.
- 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.
- We test the membrane and find where current is passing through it.
- We send a report with photos of each breach so your roofer can repair it.
Before the survey
- Let us know about parking near the property
- If you are buying, let the agent know when we are coming
- Have any questions written down, so nothing gets missed
Booking a survey
If you have photos of the roof, send them over. Pictures from the ground or a window are fine. To send them or to book, call 07833 053749 or drop us an email.
Advice
Common roof problems in Brentford
Flat roof membranes can be punctured by foot traffic, dropped tools or debris. Many are tiny but water still finds them.
Most people get in touch after spotting one of these:
- Damage from equipment installers
- Breaches hidden under paving or planting
- Holes around roof penetrations
- Failed seams and laps
If you look after a building such as St Paul's CofE Primary School, schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks.
Before booking any roof surveyor
- Whether you can ask questions once you have the report
- What they won’t be able to tell you
- How they’ll see the roof: from the ground, the loft, the roof or by drone
- Whether they hold professional indemnity and public liability insurance
Brentford: your questions answered
Is parking a problem for a survey in Brentford?
Sometimes, yes. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
Is my home in Brentford listed or in a conservation area?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
How do you choose the testing method?
It depends on the membrane and the build-up. Low-voltage testing typically needs a wet surface, while high-voltage testing needs a dry, exposed membrane.
Is the repair part of the test?
No. We test the membrane and report. You get the breach locations with photos for your roofer to repair.
How do I arrange electronic leak detection in Brentford?
To arrange a survey, ring 07833 053749 or send us an email with the address, the type of property and what’s prompted the survey. We will confirm the price and agree a day with you.
What does the report include?
You get our findings in writing, part by part, with photos. Points are put by urgency where it matters.
Is Brentford in your area?
Yes, we do. Brentford is part of the area we cover.
Honest limits
Without opening up the roof, some things stay hidden, and that sets some limits:
- Build-ups without a suitable layer below
- Sections we cannot safely access
- Moisture spread under the membrane
If you’re not sure which survey you need, ring 07833 053749 or send us an email and we’ll give you a straight answer. The full list of what we check.
What this survey covers
- Green roofs
- Liquid-applied waterproofing
- Commercial flat roofs
- Roof terraces and balconies
- Flat roof membranes
- Single-ply roofs
Roof by roof
Bituminous membranes
Many flat roofs use bitumen-based membranes. The build-up decides which method will work.
Single-ply membranes
Some single-ply membranes suit electronic testing well, depending on the type and build-up.