Surrey · London and the South East
Electronic Leak Detection in Hammer
Electronic leak detection to pinpoint holes in flat roof membranes in Hammer, using drones and thermal imaging where applicable. Call or email for a price.
- Damp inside with no sign on the roof
- Breaches hidden under paving or planting
- Gaps at membrane joints
Electronic leak detection in Hammer: what you get
ELD finds breaches in the membrane but not every way water gets in. Leaks from walls, copings, rooflights or pipes need other checks. If the evidence points elsewhere, we’ll say so. The test shows breaches in the membrane, not water coming through masonry or around frames. Our report keeps that distinction clear. You will also know what to check next. Typical surveys look at leaking laps in the waterproofing and punctures from foot traffic or tools, across green roofs, commercial flat roofs and roof terraces and balconies.
Older buildings in small places like Hammer may be listed or in a conservation area, which can shape what a new flat roof may look like. If you are planning work, check with the council first. Knowing the roof’s condition is the starting point. Listed building consent is needed for changes that affect a listed building’s special interest.
The report records the flat roof membrane as we found it on the day. It’s useful straight away, and a good reference for later.
- Place
- Hammer (GU27)
- Wider area
- Surrey
- Price
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Appointments
- Weekdays, Saturdays and Sundays
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Hammer: your questions answered
Is my home in Hammer listed or in a conservation area?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. It matters most if you are planning to re-roof in a different material.
Do you cover smaller places like Hammer?
Yes, Hammer is covered. We work right across London and South East England, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can every flat roof be tested?
It depends on the membrane and the build-up. Let us know what you know about the roof and we will confirm suitability.
Will you photograph what you find?
Yes. We photograph the roof as we go, and the report uses them to show each finding.
Do you climb onto every roof?
Only where it is safe to do so. We inspect what can be seen safely: from the ground, from windows and vantage points, from the roof space, from the roof itself where safe and by drone where applicable. The report says if anything couldn’t be seen.
What if it rains on the day?
It can, depending on the survey. Drones cannot fly safely in high wind or heavy rain, and thermal imaging works best with a dry roof, little wind and a sunny day beforehand. If the conditions are not right, we’ll talk to you about another date.
What happens after the survey?
We email you the written report with photographs and recommendations. You can use it to talk to a seller, an insurer, a roofer or a managing agent, whichever applies.
Local flat roofs in Hammer
Many older homes in Surrey have handmade clay tiles and tile-hung upper walls. Some old buildings in Surrey and Sussex have Horsham stone slab roofs. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. What can be done to an older roof may depend on listing or a conservation area. The council is the place to check, along with Historic England’s list, before anyone quotes for re-roofing.
If you own a rental within reach of Haslemere station, the flat roof over a let home is worth a look before it becomes a tenant complaint. Anyone responsible for a site like Woolmer Hill School will know that ponding and blocked outlets on a wide flat roof are worth catching before the next wet season.
Hammer is about 9 miles south of Farnham, in Surrey. Hammer is one of many places we visit across Surrey, for houses, flats and commercial buildings. Across Surrey, we cover Hammer. Our Guildford page covers surveys nearby.
Electronic leak detection in GU27 are booked the same way as anywhere else. If you need electronic leak detection at a property on Hammer Lane, Moor Road and Copse Road or a nearby road, we can survey it. Nearby, we also carry out electronic leak detection in Woolmer Hill (1 mile south), Hammer Bottom (1 mile west), Shottermill (1 mile east), Bramshott Chase (1 mile north) and Linchmere (1 mile south-west). We also work in nearby towns such as Guildford (14 miles north-east), Farnham (9 miles north), Cranleigh (12 miles east), Ash (11 miles north), Godalming (9 miles north-east) and Farncombe (10 miles north-east).
Around Hammer
Around Hammer, our work takes us to homes and buildings near The Prince of Wales pub and Camelsdale Primary School. Hammer’s nearest station is Haslemere station, roughly 1.5 miles east of the centre. A little further out are Haslemere and District Hospital (2 miles east). For a walk, there’s Lynchmere Commons and Wheeler's Down.
Before and after the survey
Getting the most from electronic leak detection starts before we arrive and carries on afterwards. Some tips:
- Act on new leaks promptly
- Keep a note of leaks after rain
- Find the breach before more patching
- Keep outlets clear of debris
You receive a report showing where each breach was found, with photos. Your roofer uses it to carry out repairs.
Do not leave a flat roof leak running. The longer water gets in, the more insulation and decking can be affected.
DIY checks: what’s safe
After heavy rain, check ceilings and the tops of walls for new stains. Take a photo and write down when you saw it, as it helps a surveyor trace the cause.
Your own check is a good start, but it is not a survey. From the ground, valleys, flashings and the backs of chimneys are frequently out of sight.
Towns and villages near Hammer
More services for Hammer
How it works
It helps to start with what’s prompted the survey: a purchase, a leak, a storm, new work or simply peace of mind. That way we can focus on what matters to you. Most visits take a length of time set by the membrane area and the build-up, and we’ll give you a guide when quoting. Cottages and farmhouses around Hammer frequently have roofs at several levels, with lean-tos and outbuildings attached. Each part is looked at from wherever it can be seen safely.
- First, you tell us about the roof build-up and where water is showing.
- The roof is assessed to see if electronic testing will work on it.
- We pick the low-voltage or high-voltage method that suits the roof.
- Testing runs across the roof to locate breaches in the membrane.
- The breaches are recorded with photos in a report for your roofer.
Preparing for the visit
- Leave a clear route to the loft
- Have keys ready for side gates, garages or roof access doors
- Make sure pets are kept safely away
Arrange a survey
Every survey is priced before it’s booked, so you know the cost up front. Electronic leak detection is quoted for your roof, because the method depends on the roof. To book, call 07833 053749 or email us.
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What we are asked to look at in Hammer
Water travels under flat roof membranes. The stain inside can be far from the hole, so tracing it by eye is difficult.
It is worth booking a survey if you’ve seen:
- New membranes needing a check before handover
- Holes left by work on the roof
- Leaks showing away from the breach
- Leaks at pipes, outlets or fixings
The streets around a church such as St. Stephen's Church are frequently among the oldest in a place, and if you own one of the older houses nearby, later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear.
Before you book anyone
- When you’ll get the report
- Will they check the loft as well as the outside?
- Whether VAT is added on top
- Will the report include photos?
Landlords, agents and block managers in Hammer
Letting agents can arrange access with tenants. Surveys run seven days a week, which helps when tenants work during the week.
Managing agents and residents’ management companies use roof surveys to plan maintenance. The report sets out what needs attention now and what can wait.
What we look for on each type of roof
Single-ply membranes
Single-ply can be punctured by tools or fixings. Testing helps find them.
Green and ballasted roofs
ELD is easier on a new roof before it is covered.