Slough · London and the South East
Electronic Leak Detection in Longford
Electronic leak detection in Longford, backed by more than 20 years’ experience. Every survey ends with a written report and photographs.
- Damage from equipment installers
- New membranes needing a check before handover
- Gaps at membrane joints
How electronic leak detection works in Longford
Green roofs, ballasted roofs and roofs under paving are harder to test. The layers on top can limit the methods we can use and parts may need to be lifted. We will discuss it with you when we quote. Any details of the build-up help because they show what’s under the surface. We will tell you if the roof can’t be tested. If you’ve noticed patched roofs that still leak and gaps at membrane joints, we can find out what’s behind it, whatever the roof.
Somewhere as small as Longford, flat roofs tend to be on extensions, garages and converted outbuildings. The checks are the same as anywhere: outlets, upstands, edges and the covering itself. We simply plan the journey and access beforehand. Garages and outbuildings are easy to forget, so mention any you want included when you book.
Most points in the report come with a picture, because a photo of a cracked flashing says more than a paragraph. If something couldn’t be seen safely, the report is clear about it.
- Place
- Longford (SL3, UB7, TW6)
- Wider area
- Slough
- Prices
- Quoted for your roof
- Report
- Emailed report with photos and recommendations
- When we survey
- Monday to Sunday, daytime
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
Before and after the survey
Some practical points come up on survey after survey. They apply to most roofs:
- Do not leave water getting in
- Use boards when working on the roof
- Do not let outlets block
- Stay off the flat roof unless needed
If anything in the report isn’t clear, ask us. We will explain what was found and what it means.
Keep outlets and gutters on flat roofs clear. Water that sits on the roof finds breaches faster.
How the survey works
Where it is relevant and can be reached safely, the loft space is checked as well as the outside. Inside, we look for staining, damp, gaps and signs of movement, as far as the space allows. The whole visit normally takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. Around Longford, older homes can have small or awkward roof spaces, so it’s useful to know whether there’s a loft hatch and how easy it is to reach. Only areas that can be reached safely are inspected.
- You let us know 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.
- The membrane is tested and breaches are found.
- You get a report with photos of each breach.
Preparing for the visit
- Check pets are kept safely away
- Check the loft hatch can be reached
- Agree roof access with the managing agent if it’s shared
Booking a survey
Most bookings start with a short call: phone 07833 053749 or send us an email and we will ask a few questions about the roof. The price is agreed before a date is set.
Related advice
Longford questions
Is Longford within the area you cover?
Yes, Longford is covered. We work right across London and South East England, and smaller places are part of that. Longer journeys are simply planned beforehand.
Does a conservation area affect roof work in Longford?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it’s in a conservation area. 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.
Can you survey at the weekend?
We survey on any day from Monday to Sunday, during the day, which suits people who work during the week. Just say which days work for you.
What’s the price of ELD?
We quote electronic leak detection for each roof, as the method and time depend on the roof. Size, build-up and access all affect the price. For a quote, phone 07833 053749 or email us.
Do you look in the loft space?
Yes, where the survey calls for it and there is safe access. Inside, we look for damp, staining, gaps and sagging.
What does the report include?
It sets out what we found, why it matters and what we recommend, backed by photographs. Anything we couldn’t see safely is noted too.
Does electronic leak detection work on all membranes?
That depends on the roof’s membrane and layers. Share any details you have and we’ll confirm suitability.
Roof by roof
Green and ballasted roofs
Parts of the covering may have to come up. We discuss this before quoting.
Liquid-applied waterproofing
Liquid-applied coatings form a seamless layer but holes and thin areas can occur. Whether ELD works depends on the coating and build-up.
Electronic leak detection in Longford: local notes
Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles. Mixed in with those pitched roofs are lots of flat ones, over rear extensions, dormers, garages and shops. About 4.3 miles west lies Frogmore House, a reminder of how long the area around Longford has been built on. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead, and the council can say whether a home is in a conservation area.
For landlords with property near Heathrow Terminal 5 Rail station, flat roofs on let property tend to be checked only when they fail, which is the costly way round. Anyone responsible for a site like Pippins School will know that large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Longford is about 2 miles south-west of West Drayton, in Slough. Longford is part of the area we cover across London and South East England. Longford is one of the places in Slough where we work. Our Guildford page covers surveys nearby.
Postcode districts we cover here for electronic leak detection: SL3, UB7 and TW6. Streets in the area include Wallis Road, Widgeon Road and Stanwell Moor Road, all of which we cover. Main roads around Longford include the A3044, which makes travel easy. If you are just outside Longford, we cover Harmondsworth (1 mile north-east), Stanwell (2 miles south-east), Heathrow (2 miles east), Sipson (2 miles north-east) and West Bedfont (2 miles south-east). Further out, we also cover Slough (6 miles north-west), Cippenham (7 miles north-west), Chalvey (5 miles west), Britwell (7 miles north-west), Langley (3 miles north-west) and Upton (5 miles north-west).
Landmarks near Longford
We work in homes and buildings around The Kings Arms and Arthur Jacob Nature Reserve and the streets around them. Longford’s nearest station is Heathrow Terminal 5 Rail station, roughly 0.5 miles south-east of the centre. A little further out are Windsor Castle (4.8 miles west) and Harlington (2.1 miles north-east). Open spaces near Longford include Crane Meadows and Staines Reservoirs.
Common roof problems in Longford
Joints and laps in a membrane can fail over time. A gap that’s hard to see can let water in for months before it shows.
Common reasons to book include:
- Repairs that haven’t stopped the leak
- Leaks under green or ballasted roofs
- A flat roof leak that can’t be traced
- Leaks at pipes, outlets or fixings
A roof leak in a hotel or guest house around Longford means lost rooms as well as repairs.
Before you book anyone
- Is VAT included in the price?
- What experience they bring
- How long the report takes to arrive
- What the report includes, and whether it has photographs
Towns and villages near Longford
Also in Longford
Honest limits
Every survey has limits, and it is better to know them up front. Bear these in mind:
- The extent of water in the insulation
- Leaks from walls, copings or rooflights
- Fixing the holes we find
Not sure which survey suits your roof? You can phone 07833 053749 or email us and we’ll tell you before booking. What our survey covers.
What we look at
- Roof terraces and balconies
- Liquid-applied waterproofing
- Single-ply roofs
- Green roofs
- Flat roof membranes
- Commercial flat roofs
Rented homes, blocks and businesses
Letting agents can arrange access with tenants, at a time agreed in advance. Surveys run on any day of the week, which can make access easier.
An agent can book and manage the survey for a landlord, and the report can go to both. Access is agreed with the tenant ahead of time.