Greater London · London and the South East
West Norwood Electronic Leak Detection
Find out the condition of the flat roof membrane at your property in West Norwood. Visits run on weekdays and weekends, in the daytime.
- Leaks showing away from the breach
- New membranes needing a check before handover
- Holes left by work on the roof
How electronic leak detection works in West Norwood
Electronic testing locates holes in the waterproofing, not every cause of water getting in. Leaks from walls, copings, rooflights or pipes need other checks. If the evidence points elsewhere, we’ll say so. It will not show water getting in through brickwork or around frames. The report makes clear what was and wasn’t tested. We’ll point you to the likely next step. Typical surveys look at leaks through a covered membrane and leaks that return after repairs, on liquid-applied waterproofing, green roofs and flat roof membranes.
London has a lot of flat roofs: rear additions, dormers, roof terraces and the roofs of blocks and offices. Coverings range from felt and asphalt to EPDM rubber, GRP fibreglass and single-ply membranes, each with its own weak points. In West Norwood, 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.
After the visit, you get a written report with photographs, emailed to you. It sets out the condition of the flat roof membrane, any defects and our written recommendations.
- Location
- West Norwood (SE19, SE27, SE21)
- Region
- Greater London
- Cost
- Quoted for your roof
- Reports
- A written report with photos, by email
- When we survey
- Weekdays and weekends
- Insured
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
Your questions about electronic leak detection in West Norwood
Do you cover West Norwood?
We do. Every survey there gets the same written report with photographs.
How do I find out if my home in West Norwood is listed?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it is in a conservation area. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Does electronic leak detection work on all membranes?
Not every roof is suitable. Some membranes conduct electricity and some roofs lack the layer the test needs. If your roof will not work, we will say so at the start.
Can you survey in bad weather?
Light rain is typically fine; heavy rain and wind are different. Strong wind or heavy rain can make access unsafe and ground a drone, so we’d move the date with you.
What’s the price of ELD?
Electronic leak detection is quoted for your roof, because the method depends on the roof. The price depends on the roof’s size and build-up. To get a quote, ring 07833 053749 or use the contact form.
How do you choose the testing method?
It depends on the membrane and the build-up. Low-voltage testing usually needs a wet surface, while high-voltage testing needs a dry, exposed membrane.
Will I get photos?
Yes, plenty. Pictures sit next to the findings they show, so you can see what we mean.
What we do, step by step
There is not much for you to do on the day. Show us any stains, drips or problem areas you know about, and we’ll get on with the inspection. The survey itself takes more time on a big roof than a small one, with the construction of the roof playing a part too. From the street, a London terrace typically shows only its front slope or parapet, so a visit in West Norwood moves between viewpoints: the pavement, upstairs windows, the loft and any safe spot at the back. If other people live in the building, let us know who can let us into the shared parts.
- 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.
Preparing for the visit
- Clear the way to the loft hatch
- Jot down any questions you want answered
- Dig out any old roof reports or invoices
Getting a price
Every survey is priced before it is booked, so you know where you stand. We quote electronic leak detection for each roof, as the method and time depend on the roof. For a price for your roof, phone 07833 053749 or use the contact form.
Advice
How we price electronic leak detection
Prices always include VAT. The things that change the price are:
- Roof area
- Whether it is a home or a commercial building
- Whether thermal imaging or a drone is needed
- The shape of the roof and its 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 the job before booking.
Getting in touch
You don’t need to know any roofing terms. It’s enough to let us know:
- Where the property is, with the postcode
- Any photos you have, taken from ground level or a window
- What made you get in touch
- When you need the report by
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 will know the price before anything is booked.
What we’re asked to look at in West Norwood
Seams are a common weak point in flat roof waterproofing. A gap that’s hard to see can let water in for months before it shows.
It’s worth booking a survey if you’ve seen:
- Damp inside with no sign on the roof
- Waterproofing to test before it’s covered
- Leaks at pipes, outlets or fixings
- Repairs that haven’t stopped the leak
For businesses in and around places such as Centrale Croydon, the flat roofs over shops and commercial units are worth checking before a leak, not after.
Before you book anyone
- Do they have a CAA Flyer ID and Operator ID for drone work?
- How they plan to inspect the roof safely
- Whether VAT is added on top
- Their track record with similar roofs
Honest limits
Every survey has limits, and it is better to know them up front. Keep these in mind:
- Roofs whose membrane or build-up is not suitable
- Sections we cannot safely access
- Moisture spread under the membrane
If you’re not sure which survey you need, call 07833 053749 or use the contact form and we’ll give you a straight answer before booking. The full list of what we check.
What this survey covers
- Flat roof membranes
- Liquid-applied waterproofing
- Green roofs
- Roof terraces and balconies
- Single-ply roofs
- Commercial flat roofs
What you can safely check yourself
Look up at the roof after a storm, from the ground: pieces of tile or slate on the ground, a gap in the ridge or a lifted flashing are all worth noting. Leave anything above ground level to a survey.
The one thing to avoid is getting up close. Slates, tiles, flat roofs and rooflights can give way, and a fall can be serious. That part is for a survey.
Towns and villages near West Norwood
What else we do in West Norwood
Flat and commercial roofs around West Norwood
Inner London’s Victorian and Edwardian terraces frequently have Welsh slate roofs. From the street you may see only a parapet, with a butterfly roof and a valley gutter behind it draining to the back. In a house like that, shared stacks, party-wall upstands and lead flashings all need looking at as far as they can be seen. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. The wider area around West Norwood has a long history of building, with Kingswood House about 0.6 miles east. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and any change of roofing material on a listed home needs checking with the council first.
If you look after a building such as St Luke's Church of England Primary School, large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly. If you own a rental within reach of West Norwood station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
West Norwood is about 5 miles south of London, in Greater London. Roofs in West Norwood get the same thorough look as anywhere else in Greater London. Our area takes in places right across Greater London, large and small.
Surveys in SE19, SE27 and SE21 work the same way as everywhere else we cover. Streets in the area include Crown Lane, Dover Road and Moore Road, and we cover them all. Being close to the A214 and A215, West Norwood is simple for us to get to. Other places close to West Norwood include Norwood New Town (1 mile south), Gipsy Hill (1 mile south-east), Upper Norwood (1 mile south-east), West Dulwich (1 mile north-east) and Crystal Palace (1 mile south-east). Further out, we also cover London (5 miles north), City of Westminster (7 miles north), Marylebone (7 miles north), Kensington (7 miles north-west), St Pancras (7 miles north) and Shoreditch (7 miles north).
Around West Norwood
Typical jobs here are in homes near Long Meadow, Norwood School and Hillcrest. The nearest railway station is West Norwood station, roughly 0.5 miles north-west. A little further out are Centrale Croydon (3.5 miles south) and St Christopher's Hospice (1.6 miles east). Open spaces near West Norwood include Dulwich Upper Wood and Battersea Park Lake.
For landlords and managing agents
Letting agents can arrange access with tenants. Surveys run on any day of the week, which can make access easier.
A roof problem in a let property affects your tenants as well as the building. A survey shows what needs attention, so you can plan the work.