Greater London · London and the South East
Electronic Leak Detection in Harlington
Electronic leak detection across Harlington, with over 20 years’ experience behind it. Every survey ends with a written report and photos.
- Leaks showing away from the breach
- New membranes needing a check before handover
- Patched roofs that still leak
About our electronic leak detection in Harlington
You get a report showing the location of each breach, with photographs. Your roofer can then repair those points rather than guessing. We do not estimate repair costs; that is for your roofer to price. Testing again after repairs can confirm the breaches have been dealt with if the build-up allows. Results come in a written report with photos. We survey single-ply roofs, flat roof membranes and green roofs, and common reasons people get in touch are holes around roof penetrations and leaks showing away from the breach.
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, each with its own weak points. In Harlington, 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.
Most points in the report come with a picture, so you can see each defect rather than just read about it. Anything out of sight on the day is listed as such.
- Where
- Harlington (UB3, TW6, UB7)
- Region
- Greater London
- Cost
- Quoted for your roof
- Report
- Emailed report with photos and recommendations
- Survey days
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
What we look for on each type of roof
Single-ply membranes
Single-ply membranes are common on commercial and newer roofs. Seams and penetrations are typical breach points.
Bituminous membranes
Many flat roofs use bitumen-based membranes. Whether ELD suits them depends on the build-up.
Tips from our surveys
Most of what helps is simple and safe from the ground. A few suggestions:
- Record dates and spots where water appears
- Find the breach before more patching
- Clear flat roof outlets regularly
- Get leaks traced quickly
If water has been getting in, insulation under the membrane may be wet. Your roofer can advise on that, and moisture readings can help.
Ask trades working on the roof to protect the membrane when fitting equipment. Have the roof looked at after other work.
Harlington: your questions answered
Do you look at commercial flat roofs near Harlington, like hotels?
Yes, commercial buildings, hotels included, are part of the work. Access to the roof is sorted out with whoever manages the building before the day.
Is my home in Harlington listed or in a conservation area?
Start with Historic England’s list for listing and your council for conservation areas. Either can affect what roof work is allowed, so it is worth checking before planning any.
Do you need to get into the loft?
If it’s needed and safe to reach, yes. We look for staining, damp, daylight and signs of movement, as far as the space allows.
What does electronic leak detection do?
ELD passes a small electrical current across the roof to locate holes in the membrane. The current only gets through where the membrane is breached so we can pinpoint it.
Do you test for asbestos?
No. Asbestos surveys and sampling are not something we do. Where a material might contain it, like old cement sheets on a building from before 2000, the report flags it.
Do you survey roofs on blocks of flats?
Yes, once access has been agreed. Roofs over flats are often shared, so the building owner or managing agent needs to agree access. We can only inspect what we are given access to.
Do you cover Harlington?
Yes. We survey roofs across London and South East England, Harlington included.
How it works
When we arrive, we start by asking what you’ve noticed and what you want to find out. After that, we check everything we can see safely, from ground level, from windows, in the loft space and by drone where applicable. Most surveys take longer on a large roof than a small one, and the build-up of the roof makes a difference too. In converted houses and mansion blocks, the loft hatch is frequently on a shared landing. If that applies to your building, it is useful to agree access with the neighbours or the managing agent first. Otherwise, the visit in Harlington runs like any other.
- First, we confirm which roof areas are included.
- We get the roof ready for testing.
- Testing runs across the agreed area.
- Each breach found is located and recorded.
- The report is sent for your roofer to act on.
Preparing for the visit
- Tell us where we can park nearby
- Keep pets in another room
- Unlock side gates and any roof access doors
Booking a survey
To arrange a survey, phone 07833 053749 or use the contact form with the address and what you’d like to know about the roof. You’ll know the price before anything is booked.
Advice
Local flat roofs in Harlington
With Osterley House about 3.6 miles east, Harlington sits in an area with a long building history. 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. Within a mile and a half or so of Harlington there are several hotels, and hotels, like offices and blocks of flats, often have flat roofs. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use.
If you own a rental within reach of Heathrow Terminals 2 & 3 Rail station, the flat roof over a let home is worth a look before it becomes a tenant complaint. If you run a business near Treaty Centre, flat roofs over shops and units are easy to forget until water comes through a ceiling. For hotels and guest houses around Harlington, a roof problem found early is far less disruptive than one found by a guest, so it is worth knowing the roof’s condition.
Harlington is about 2 miles south-east of West Drayton, in Greater London. From houses to flats and shops in Harlington, the roof can be surveyed. We cover towns and villages across Greater London. There’s also a page for London.
Here we cover the UB3, TW6 and UB7 postcode area for electronic leak detection. Local streets include New Road, Bath Road and Manor Lane, and we cover them all. If you’re just outside Harlington, we cover Sipson (1 mile north-west), Hatton (1 mile south-east), Cranford (1 mile south-east), Heathrow (1 mile south-west) and Harmondsworth (2 miles west). Further out, we also cover London (15 miles east), City of Westminster (12 miles east), Marylebone (13 miles east), Kensington (10 miles east), St Pancras (14 miles east) and Hoxton (15 miles east).
What’s near Harlington
Around Harlington, our work takes us to homes and buildings near The Red Lion pub, Harlington Community School and Lake Farm Country Park, among other places. The nearest railway station is Heathrow Terminals 2 & 3 Rail station, about 1.2 miles south-west of the centre. A little further out are Harlington (0.6 miles north-west) and Treaty Centre (3.4 miles east). For a walk, there’s Staines Reservoirs and Crane Meadows.
What a survey costs
When we price a survey, we consider:
- The size of the roof
- Height and safe access
- Any need for thermal images or a drone flight
- Chimneys, valleys, parapets and other details
All our prices include VAT. We quote electronic leak detection for each roof, as the method and time depend on the roof. You will know the price for your survey before booking.
What to tell us when you contact us
Here’s what helps us most when you get in touch:
- When you need the report by
- Where water is showing inside, if it is
- The kind of building and roof involved
- The reason for the survey, such as buying, a leak or storm damage
Surveys can be booked for weekdays, Saturdays or Sundays. To find a date that works for you, phone 07833 053749 or email us.
When you need someone else
This is not a RICS building survey, a structural engineer’s report or an asbestos survey. It also has these limits:
- How wet the insulation is
- Build-ups without a suitable layer below
- Parts of the roof covered by fixed equipment
If in doubt, phone 07833 053749 or drop us an email and we’ll recommend the right survey before booking. What our survey covers.
Roofs we survey in Harlington
- Commercial flat roofs
- Flat roof membranes
- Roof terraces and balconies
- Green roofs
- Single-ply roofs
- Liquid-applied waterproofing
Towns and villages near Harlington
Other services in Harlington
Landlords, agents and block managers in Harlington
Shared roofs need a little more planning: we need access agreed with the freeholder or managing agent. Mention it when you contact us and we’ll plan the visit with that in mind.
Buyers’ agents can book surveys on behalf of their clients. The report is emailed, so it can go straight to your client, photos included.