Greater London · London and the South East
Electronic leak detection in Perivale, Greater London
Electronic leak detection in Perivale from an independent, experienced roof surveyor. More than 20 years and over 5,000 surveys across London and South East England.
- Breaches around outlets and penetrations
- Gaps at membrane joints
- Holes left by work on the roof
Tips from our surveys
A few practical points come up again and again on our surveys. They apply to most roofs:
- Test new membranes before covering them
- Share any drawings of the roof
- Do not keep patching the same spot
- Keep foot traffic on flat roofs to a minimum
Once repairs are made, the roof can be tested again if you want to check them if the build-up allows.
ELD before paving, ballast or planting goes on is worth considering. It’s easier to find holes before more layers are added.
About our electronic leak detection in Perivale
Some flat roofs cannot be tested electronically. Some membranes conduct electricity themselves and some roofs do not have a suitable layer beneath the membrane. We will say if ELD will not work on your roof before any testing. Any details you have about the membrane and build-up help us decide, like drawings or specifications. It avoids arranging a test that can’t give results. We’re often asked to look into stains far from any visible defect and patched roofs that still leak, across green roofs, roof terraces and balconies and flat roof membranes.
Offices, shops and blocks of flats across London often have large flat roofs with plant, rooflights and walkways. Each pipe, upstand and fixing through the covering is a possible weak point. For a building in Perivale, access is agreed with whoever manages the roof before the visit. Rooflights, plant supports and pipe entries are common places for a membrane to fail.
If any part of the flat roof membrane couldn’t be seen safely, we say so in the report. You will know exactly what was inspected and what wasn’t.
- Place
- Perivale (UB6, HA0, W5)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- Appointments
- Weekdays, Saturdays and Sundays
- Insurance
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Other services in Perivale
Flat roofs in Perivale
Historic houses such as Pitzhanger Manor, about 2 miles south, show how far back building in the area around Perivale goes. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and a listed home or one in a conservation area may need consent for changes of material. 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. Bay roofs, hip ridges and dormers from later loft conversions are the details that set these houses apart. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
If you let a flat or house near South Greenford station, the flat roof over a let home is worth a look before it becomes a tenant complaint. If you live in an older home near St. Mary with St. Nicholas - Perivale, the flat roofs on later extensions tend to wear out long before the main roof.
Perivale is about 1 mile east of Greenford, in Greater London. We carry out electronic leak detection for homes and businesses in Perivale. Perivale is one of the towns and villages in Greater London where we work. We also survey roofs in London.
Every address in UB6, HA0 and W5 is within our area for electronic leak detection, from the main roads to the quietest streets. We offer electronic leak detection to properties on Lee Road, Wicket Road and Bilton Road. Neighbouring places we cover for electronic leak detection include Pitshanger (1 mile south), Brentham Garden Suburb (1 mile south-east), Sudbury Hill (1 mile north), Sudbury (1 mile north) and Greenford (1 mile west). Further out, we also cover London (10 miles east), City of Westminster (7 miles east), Marylebone (8 miles east), Kensington (6 miles south-east), St Pancras (9 miles east) and Shoreditch (10 miles east).
What’s near Perivale
Typical jobs here are in homes near Alperton Community School, Castle Bar Park and Brentham Clubhouse pub and the streets around them. For rail, the closest station is South Greenford station, roughly 0.8 miles south-west. Other landmarks nearby include London Transport Museum Depot (2.8 miles south-east) and London Designer Outlet (1.9 miles north-east). Not far away are Middle Lake and Castlebar Hill.
How we price electronic leak detection
All our prices include VAT. The things that change the price are:
- Height and safe access
- How many separate roofs there are, such as extensions, dormers and garages
- Commercial roofs and larger buildings
- The shape of the roof and its details
The cost of a survey depends on the roof: its size, its height, how many sections it has 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.
Helping us price your survey
We’ll typically ask about:
- The reason for the survey, like buying, a leak or storm damage
- Photos of the roof, taken safely from the ground or a window
- How the loft is reached, if there is one
- The style of property, from a terrace to a block
For a price for electronic leak detection in Perivale, phone 07833 053749 or use the contact form. Some details about the property and the roof help us give you an accurate price.
What we cannot see
It is a careful look at the flat roof membrane, not the whole story. Its limits include:
- Roofs whose membrane or build-up isn’t suitable
- The extent of water in the insulation
- Carrying out the repair work
If you’re not sure which survey you need, ring 07833 053749 or use the contact form and we will give you a straight answer. The full list of what we check.
Roofs we survey in Perivale
- Roof terraces and balconies
- Commercial flat roofs
- Single-ply roofs
- Green roofs
- Liquid-applied waterproofing
- Flat roof membranes
Perivale questions
How do I find out if my home in Perivale is listed?
For listing, use Historic England’s list; for conservation areas, ask the council. The answer matters most when a change of material is on the cards.
Do you cover Perivale?
Yes, Perivale is within the area we cover. We work right across London and South East England. You can call 07833 053749 or use the contact form with the address and a few details.
I live in a flat. Can you survey the roof?
Yes. Shared roofs just need a little more planning. Let us know about it when booking and we’ll explain what’s needed.
Do you look in the loft space?
If the survey needs it and the loft space can be reached safely, yes. A clear path to the hatch helps, and if the loft cannot be reached safely, the report says so.
Can you survey in bad weather?
Some surveys depend on the weather more than others. Drone flights need calm, dry weather, and thermal imaging works best with a dry roof, little wind and a sunny day beforehand. If the conditions aren’t right, we’ll talk to you about another date.
Which days do you carry out surveys?
We survey on any day from Monday to Sunday, during the day. Let us know your preferred days when booking.
What happens next?
The report comes by email, and what you do next is up to you: raise it with a seller, send it to an insurer, brief a roofer or share it with a managing agent.
How the survey works
Every visit follows the same pattern: we listen to what’s been worrying you, inspect the roof from every safe vantage point, take photos as we go and make notes for the report. Most visits take longer on a large roof than a small one, and the build-up of the roof makes a difference too. Many London properties are flats or terraces with no side access, so rear slopes are viewed from windows, the loft or, where a flight is allowed, by drone. If the building has a managing agent or access rules, let us know when you book.
- We start with what you know about the roof and the leak.
- We check whether the membrane and build-up suit ELD.
- The test method is chosen to suit the roof.
- We test the roof and locate any breaches.
- A report with photos shows where each breach is.
Before we arrive
- Have any paperwork from past roof work to hand
- Tell us about parking before the day
- Leave side gates unlocked
Getting a price
To arrange a survey, call 07833 053749 or send us an email and let us know the address and what’s prompted the survey. You will know the price before anything is booked.
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How the survey changes by roof type
EPDM rubber roofs
ELD on EPDM depends on the product and the layers. We look at this first.
Liquid-applied waterproofing
Liquid-applied coatings form a seamless layer but holes and thin areas can occur. Suitability for ELD depends on the system.
Signs you need electronic leak detection in Perivale
On a flat roof, water spreads under the waterproofing. The stain inside can be far from the hole which makes it hard to find by looking.
Signs worth acting on include:
- Punctures from foot traffic or tools
- New membranes needing a check before handover
- Failed seams and laps
- Damp inside with no sign on the roof
As a London address, Perivale can be tricky for parking: a visitor permit or a nearby bay makes the day easier.
Before booking anyone
- Whether VAT is added on top
- How they plan to inspect the roof safely
- What’s outside the scope of the survey
- How much experience they have with roofs like yours