Surrey · London and the South East
Electronic leak detection in Hamsey Green, Surrey
An experienced roof surveyor for electronic leak detection in Hamsey Green. More than 20 years and over 5,000 surveys.
- Damp inside with no sign on the roof
- Damage from equipment installers
- Repairs that haven’t stopped the leak
About our electronic leak detection in Hamsey Green
Some flat roofs can’t be tested electronically. Some membranes conduct electricity themselves, and some build-ups lack the layer the test needs below the membrane. We’ll say if ELD won’t work on your roof at the start. Telling us what you know about the roof’s membrane and layers helps, including drawings, specifications or the roofer’s paperwork. It avoids arranging a test that cannot give results. We survey commercial flat roofs, single-ply roofs and green roofs, and people most often book us about breaches hidden under paving or planting and leaks through a flat roof with no obvious cause.
Older buildings in small places like Hamsey Green may be listed or in a conservation area, and that can affect how an extension roof or dormer is re-covered. Check with the council before planning any change of material. Knowing the roof’s condition is the starting point. Changes that affect a listed building’s special interest need listed building consent.
Findings are set out part by part, from the main slopes down to the gutters and outlets, each with a short note and a photo. It records what’s sound as well as what is not.
- Place
- Hamsey Green (CR6, CR2)
- Region
- Surrey
- Cost
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- Appointments
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
How we price electronic leak detection
Not every roof costs the same to survey, and it comes down to:
- Commercial roofs and larger buildings
- Any need for thermal images or a drone flight
- Building height and the viewpoints available
- 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. We confirm the price for your roof before booking.
Helping us price your survey
Here’s what helps us most when you contact us:
- Anything about access we should know
- The address and postcode of the property
- The style of property, from a terrace to a block
- When you need the report by
If you are buying, it is useful to book soon after your offer is accepted, so there’s time to use the report before exchange. Otherwise, simply phone 07833 053749 or use the contact form whenever suits you.
What electronic leak detection looks like in Hamsey Green
Many older homes in Surrey have handmade clay tiles and tile-hung upper walls. A few of Surrey’s oldest buildings have heavy Horsham stone slab roofs. Mixed in with those pitched roofs are plenty of flat ones, over rear extensions, dormers, garages and shops. The wider area around Hamsey Green has a long history of building, with Addington Palace about 2.8 miles north. 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.
Take an older house close to St Antony: the flat roofs on later extensions tend to wear out long before the main roof. If you own a rental within reach of Upper Warlingham station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Hamsey Green is about 1 mile north of Warlingham, in Surrey. We carry out electronic leak detection for householders, landlords and businesses in Hamsey Green and nearby. Hamsey Green is one of the places in Surrey where we work. Our London page covers surveys nearby.
Surveys in CR6 and CR2 work the same way as everywhere else we cover. Whether your property is on Clyde Avenue, Crewe's Lane and Princes Avenue or anywhere close by, we can survey it. We also cover the places around Hamsey Green: Warlingham (1 mile south), Whyteleafe (1 mile south-west), Chelsham (1 mile east), Sanderstead (1 mile north-west) and Farleigh (1 mile east). We also work in nearby towns such as Epsom (9 miles west), Horley (11 miles south-west), Redhill (7 miles south-west), Ewell (9 miles west), Reigate (8 miles south-west) and Caterham (3 miles south-west).
Local landmarks in Hamsey Green
In Hamsey Green, that means homes and buildings near Blanchman's Farm, The White Lion Public House and Warlingham School, among other places. Hamsey Green’s nearest station is Upper Warlingham station, roughly 1 mile south-west of the centre. A little further out are Warlingham Park Hospital (1.4 miles east) and East Surrey Museum (2.6 miles south). For a walk, there’s South London Downs National Nature Reserve and Nore Hill.
What happens on the day
Photos are taken throughout the visit, so you can see in the report what we found and where. Close-ups come from the safest viewpoint available. A typical visit takes longer on a large roof than a small one, and the build-up of the roof makes a difference too. Older roofs in small places like Hamsey Green can have low, tight loft spaces, so let us know about the loft hatch and any ladder. Only areas that can be reached safely are inspected.
- First, you tell us about the roof build-up and where water is showing.
- We check that the membrane and build-up suit electronic leak detection.
- The testing method is chosen to suit the membrane and build-up.
- We test the membrane and find where current is passing through it.
- The breaches are recorded with photos in a report for your roofer.
Before we arrive
- Make a note of anything you’d like us to look at
- Dig out any old roof reports or invoices
- Check we can get to the back of the property
Getting a price
You can call us seven days a week. For a price or to book, phone 07833 053749 or email us.
Advice
Leave it or get it looked at?
Testing a new membrane before it’s covered is easier than tracing a leak later. Once layers are added, finding a breach is harder. Older cottages and farmhouses around Hamsey Green can have roof timbers that have been there a very long time, where water from a failed roof can cause rot if it is left.
Larger roofs, taller buildings and commercial roofs take longer, so the price reflects that. The price is confirmed before booking.
Why choose Independent Roof Survey in Hamsey Green
- 5,000+ surveys completed
- Professional indemnity and public liability insurance
- An independent look at the roof
- Surveys seven days a week
Common questions in Hamsey Green
Is Hamsey Green in the area you cover?
Yes. We cover the whole of London and South East England, and Hamsey Green is part of that. You can phone 07833 053749 or email us with the address and a few details.
Does a conservation area affect roof work in Hamsey Green?
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.
Can you test a green or ballasted roof?
It can be possible, depending on the roof. Covered roofs limit the methods we can use, so we check the build-up first.
How does ELD work?
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, which shows us where the hole is.
When does the report arrive?
The Premium Survey report comes the same day, the Standard within 24–48 hours and the Basic within 48 hours. All of them come by email, ready to forward.
What’s the price of ELD?
We quote electronic leak detection for each roof, as the method and time depend on the roof. The price depends on the roof’s size and build-up. To get a quote, phone 07833 053749 or send us an email.
What’s the best way to book?
It’s easiest to call 07833 053749 or use the contact form. Let us know the address and a little about the roof, and we’ll take it from there. We survey on weekdays and at weekends.
Do you need electronic leak detection in Hamsey Green?
Joints and laps in a membrane can fail over time. Small openings at laps can leak for months before it shows.
A survey can pick up problems such as:
- Leaking laps in the waterproofing
- New membranes needing a check before handover
- Breaches around outlets and penetrations
- Leaks through a covered membrane
If you look after a building such as Hamsey Green Primary, schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks.
Before booking any roof surveyor
- Which viewpoints they use to see the roof
- How long the report takes to arrive
- What insurance they carry
- What they won’t be able to tell you
What we look for on each type of roof
Inverted and paved roofs
On inverted roofs, insulation sits above the membrane, which affects testing.
Liquid-applied waterproofing
Small holes in liquid waterproofing may leak. ELD can help locate them on suitable roofs.
What we cannot see
No survey can tell you everything, and we’d rather be clear about that before you book. Keep these in mind:
- Water entering through details rather than the membrane
- Areas we can’t reach or that cannot be tested
- The extent of water in the insulation
If in doubt, call 07833 053749 or send us an email and we’ll suggest the right survey. What a survey covers and doesn’t.
Roof types and parts we check
- Roof terraces and balconies
- Green roofs
- Liquid-applied waterproofing
- Flat roof membranes
- Commercial flat roofs
- Single-ply roofs