Greater London · London and the South East
Electronic leak detection in Greenford, Greater London
A careful look at the flat roof membrane at your property in Greenford, and put it all in a report with photographs.
- Leaks that return after repairs
- Punctures from foot traffic or tools
- Failed seams and laps
About our electronic leak detection in Greenford
ELD is a way of pinpointing breaches in a flat roof’s waterproofing membrane. It works with an electrical current that passes through the membrane only where there’s a breach. That lets us locate holes that are too small to see so your roofer knows exactly where to repair. You get a written report with photographs of each breach found. Typical surveys look at new membranes needing a check before handover and damp inside with no sign on the roof, on green roofs, single-ply roofs and commercial flat roofs.
London has a lot of flat roofs: rear additions, dormers, roof terraces and the roofs of blocks and offices. They’re covered in felt, asphalt, EPDM rubber, GRP fibreglass or single-ply membranes, each with its own weak points. Which one is on a roof in Greenford shapes how it is checked. Many older flat roofs are felt or asphalt, and many newer ones EPDM rubber or GRP.
The report records the flat roof membrane as we found it on the day. That makes it useful now and a handy reference later.
- Location
- Greenford (UB6, UB5, UB1)
- Wider area
- Greater London
- Prices
- Quoted for your roof
- Report
- A written report with photos, by email
- When we survey
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Updated
- 27 October 2026
FAQs for Greenford
Does a conservation area affect roof work in Greenford?
We can’t confirm that for you, but Historic England’s list and your council can. Both listing and conservation areas can limit changes of roofing material.
Is parking a problem for a survey in Greenford?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
How much does electronic leak detection cost?
We quote for each roof individually. Tell us about the roof and where it leaks. Just ring 07833 053749 or use the contact form for a quote.
Which days do you carry out surveys?
We carry out surveys seven days a week. To find a day that suits you, ring 07833 053749 or email us.
How long have you been surveying roofs?
More than 5,000 surveys over 20+ years.
Do you work in Greenford?
Yes. Our area covers London and South East England, and that includes Greenford.
Do you need to get into the loft?
Where it’s relevant to the survey and there is safe access, yes. A clear path to the hatch helps.
Also near Greenford
Also in Greenford
What you can safely check yourself
What you can’t do safely is get up close. Roofs are fragile and slippery, and falls from height are serious. That is where a survey comes in, using safe viewpoints and a drone where applicable.
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 affects the price in Greenford
All our prices include VAT. What changes the price is:
- Extensions, dormers and garages with roofs of their own
- Roof area
- How tall the building is and how easy the roof is to see
- If the survey needs thermal imaging or a drone
All our prices include VAT. We quote electronic leak detection for each roof, as the method and time depend on the roof. We confirm the price for the job before booking.
What we need to know
When you call or email, these details help:
- Your postcode, so we can check access and travel
- Any stains, drips or damp patches you’ve seen indoors
- How the loft is reached, if there is one
- The type of building and roof, such as pitched or flat
We confirm the price for your survey before booking, so you know where you stand. Electronic leak detection is quoted for your roof, because the method depends on the roof. For a price for your roof, ring 07833 053749 or send us an email.
What happens if roof problems are left?
Some flat roof leaks come from walls or details. ELD helps rule the membrane in or out, so other causes can be checked. In Greenford, as across London, an overflowing gutter soaks the wall below, which can lead to damp inside. A small blockage left for a few winters becomes a damp problem.
To find out what your survey will cost, call 07833 053749 or send us an email and tell us about the roof. We will confirm the figure before booking.
What you get with us
- More than 5,000 surveys completed
- Thermal imaging and drones used where they help
- An independent look at the roof
- Satisfaction rate of 98%
Take a look at how roof surveys are priced or what we found on two real jobs.
Electronic leak detection in Greenford: local notes
Outer London has a good many Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, frequently with hipped roofs in clay or concrete tiles. Hips, bay roofs and later loft conversions are typical of those semis, if your home is one of them. Next to the main roofs there is usually a flat roof somewhere, whether on an extension, a garage or a commercial unit. The wider area around Greenford has a long history of building, with Northolt Manor about 1 mile north-west. If you own one of the older houses, expect a mix of original materials and later repairs on the roof, and a listed home or one in a conservation area may need consent for changes of material.
The streets around a church such as Parish Church of the Holy Cross (old Church) are frequently among the oldest in a place, and if your home is one of the older ones nearby, later flat-roofed additions are common on older houses, and their edges and upstands frequently show the first signs of wear. Shop and office owners around London Designer Outlet may find that outlets and upstands on commercial flat roofs are the places to check before trouble starts.
Greenford is about 3 miles north-west of Ealing, in Greater London. We survey roofs in Greenford and the rest of Greater London. Greenford is one of the places in Greater London we cover for electronic leak detection. London is in our area too.
Every address in UB6, UB5 and UB1 is within our area for electronic leak detection, from the main roads to the quietest streets. We cover properties on Courthope Road, Oldfield Farm Gardens and Greenford Road. Greenford sits on or near the A4090 and A4127, which makes travel easy. Nearby, we also carry out electronic leak detection in Northolt (1 mile north-west), Perivale (1 mile east), Sudbury (2 miles north-east), Sudbury Hill (2 miles north-east) and Dormers Wells (2 miles south-west). We also work in nearby towns like London (11 miles east), City of Westminster (9 miles east), Marylebone (9 miles east), Kensington (7 miles south-east), St Pancras (10 miles east) and Shoreditch (12 miles east).
What’s near Greenford
In Greenford, that means homes and buildings near Ada Lovelace Church of England High School, The Railway pub and Northala Fields and the streets around them. Greenford has its own railway station: Greenford station. A little further out are London Designer Outlet (3 miles north-east) and Clementine Churchill Hospital (2 miles north). Not far away are Northala Fields and Litten Nature Reserve.
Signs you need electronic leak detection in Greenford
Water travels under flat roof membranes. The leak may show some distance from where water gets in which makes it hard to find by looking.
Here are some of the things we see often:
- Leaking laps in the waterproofing
- Water coming in under a flat roof
- Leaks showing away from the breach
- Breaches hidden under paving or planting
If you let a flat or house near Greenford station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Before booking anyone
- Which parts of the roof they’ll actually see
- How soon the report will arrive
- What follow-up you get after the report
- Whether they hold professional indemnity and public liability insurance
How the survey works
We’ll ask a few questions first, like when any problem began and what work has been done before. The inspection then takes as long as needed for the roof’s area and construction, which we’ll explain when we quote. In Greenford, visits are available on weekdays and at weekends. It helps if you can point us to a visitor permit or a nearby bay. Upstairs rooms at the back are useful too, as they often give the best view of a rear addition.
- We start with what you know about the roof and the leak.
- We check whether the membrane and build-up suit ELD.
- We choose a low-voltage or high-voltage method to match the roof.
- The membrane is tested and breaches are found.
- A report with photographs shows where each breach is.
How to prepare
- Show us where any leaks or stains appear
- Have any paperwork from past roof work to hand
- For a flat or shared roof, check access with the freeholder or managing agent
Booking a survey
If you’re buying, it’s useful to book soon after your offer is accepted, so there is time to use the report before exchange. For any other survey, just ring 07833 053749 or drop us an email when you’re ready.
Advice
Before and after the survey
From years of surveys, a few habits stand out:
- Note where leaks show inside and when
- Keep outlets clear of debris
- Find the breach before more patching
- Don’t leave water getting in
Keep the report with the roof’s records. It shows the condition of the membrane on that date.
Check contractors protect the waterproofing when fitting equipment. Check the roof after they’ve finished.