Surrey · London and the South East
Electronic leak detection in Coldharbour, Surrey
Know where you stand with the flat roof membrane before you spend money on it. We carry out electronic leak detection in Coldharbour, with photos and a clear written report.
- Patched roofs that still leak
- Leaks at pipes, outlets or fixings
- Failed seams and laps
What we do, step by step
We’ll ask a few questions first, about the roof’s history, any leaks and past repairs. The inspection then takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. Somewhere like Coldharbour needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. On the day, we inspect whatever is safely visible, inside and out.
- We agree the area to be tested.
- We get the roof ready for testing.
- Testing runs across the agreed area.
- We mark the breach locations in our records.
- You receive the results to pass to your roofer.
How to prepare
- Let us know where we can park nearby
- If you’re buying, let the agent know when we’re coming
- Jot down any questions you want answered
Book a survey
You can call us seven days a week. For a price or to book, call 07833 053749 or send us an email.
Advice
Electronic leak detection for homes and businesses in Coldharbour
Electronic leak detection works on many flat roof membranes over offices, units, blocks of flats and homes. It can be used to trace an existing leak or check a new membrane before handover. Each roof is quoted on its size and build-up. We can test on weekdays and at weekends, depending on the weather. Let us know about your roof to find out more. Common reasons to book are holes left by work on the roof and a flat roof leak that can’t be traced, across liquid-applied waterproofing, flat roof membranes and roof terraces and balconies.
Some older homes in villages like Coldharbour are listed or in a conservation area, which can shape what a new flat roof may look like. Check with the council before planning any change of material. Finding out what state the roof is in gives you the facts to plan with. Changes that affect a listed building’s special interest need listed building consent.
You can share the report with anyone who needs it: your solicitor, the seller, your insurer, a roofer or the building’s managing agent.
- Location
- Coldharbour (RH5)
- Region
- Surrey
- Cost
- Quoted for your roof
- Reports
- Written, with photos, emailed to you
- Appointments
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Page updated
- 27 October 2026
What we’re asked to look at in Coldharbour
When the membrane is buried, holes can’t be seen at all. ELD can work on some covered roofs, depending on the build-up.
It’s worth booking a survey if you’ve seen:
- Leaking laps in the waterproofing
- New roofs to check before paving or planting
- Patched roofs that still leak
- Holes around roof penetrations
If you live in an older home near Christ Church, the flat roofs on later extensions tend to wear out long before the main roof.
Before booking any roof surveyor
- Will the report include photos?
- What happens after the report arrives
- Their drone registration, if they fly one
- Whether the inside of the roof is included
Local flat roofs in Coldharbour
Older buildings may be listed or sit in a conservation area. To find out, check Historic England’s list and ask the council about conservation areas. Re-roofing in different materials may need permission there. Handmade clay tiles and tile-hung walls are typical of Surrey’s older houses. A few of Surrey’s oldest buildings have heavy Horsham stone slab roofs. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere.
Landlords with a home close to Holmwood station may find that flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Coldharbour is about 4 miles south of Dorking, in Surrey. Coldharbour is part of the area we cover as part of our work across London and the South East. We cover towns and villages across Surrey. Our Crawley page covers surveys nearby.
We cover every part of RH5 for electronic leak detection. We also cover the places around Coldharbour: Abinger Bottom (2 miles north-west), South Holmwood (2 miles north-east), Holmwood Corner (2 miles east), Friday Street (2 miles north-west) and Beare Green (2 miles east). We also work in nearby towns such as Guildford (10 miles north-west), Woking (13 miles north-west), Epsom (11 miles north), Horley (8 miles east), Redhill (9 miles north-east) and Ewell (13 miles north).
Landmarks near Coldharbour
Locally, jobs take us to homes and businesses close to Wotton and Abinger Commons and Plough Inn, among other places. The nearest railway station is Holmwood station, about 1.6 miles east of the centre. Well-known places in the area include Mesolithic Museum (2.6 miles north-west) and Abinger Castle (2.6 miles north-west). Open spaces near Coldharbour include Vann Lake and Leith Hill.
What electronic leak detection doesn’t cover
It is a careful look at the flat roof membrane, not the whole story. Its limits include:
- Parts of the roof covered by fixed equipment
- Build-ups without a suitable layer below
- Moisture spread under the membrane
Not sure which survey suits your roof? You can phone 07833 053749 or drop us an email and we will tell you. What our survey covers.
What we look at
- Single-ply roofs
- Liquid-applied waterproofing
- Commercial flat roofs
- Flat roof membranes
- Roof terraces and balconies
- Green roofs
What a survey costs
We confirm the exact price before booking. These are the things that affect it:
- Extensions, dormers and garages with roofs of their own
- If the survey needs thermal imaging or a drone
- The shape of the roof and its details
- Whether it is a home or a commercial building
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. You will know the figure before booking.
What we need to know
There is no need for technical words. Just let us know:
- Any marks or damp showing indoors
- Dates you’re working to, such as exchange
- Where the property is, with the postcode
- Access details, like a loft hatch or a shared roof
For a price for electronic leak detection in Coldharbour, call 07833 053749 or email us. A few details about the property and the roof help us price the survey accurately.
Towns and villages near Coldharbour
Other services in Coldharbour
Checking the roof from the ground
Your own check is a good start, but it isn’t a survey. From ground level, valleys, flashings and the backs of chimneys are frequently out of sight, and those are details a survey looks at closely.
Inside, the loft is a good place to look, with care. Take a torch and only step on boards or joists, and look for staining, damp timber or daylight coming through.
Rented homes, blocks and businesses
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. Recommendations are set out by urgency where it matters.
Landlords, agents and building managers in Coldharbour and across Surrey can book any of our surveys. To discuss a property or a block, ring 07833 053749 or drop us an email.
Your questions about electronic leak detection in Coldharbour
Will you come out to Coldharbour?
Yes, Coldharbour is covered. We cover the whole of 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 Coldharbour?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. 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.
How do I arrange electronic leak detection in Coldharbour?
To book, phone 07833 053749 or send us an email with the address, the type of property and what’s prompted the survey. We will confirm the price and agree a day with you.
Can you find leaks on a covered flat roof?
On some roofs, yes. What sits on the membrane affects the method so we look at the roof first.
Do you use drones?
Where it helps and the rules allow, yes. We hold a CAA Flyer ID and Operator ID and fly a drone under 250g, and every flight depends on the airspace and the weather.
Which method do you use?
It depends on the membrane and the build-up. Low-voltage methods are normally carried out on a wet roof and high-voltage methods need the membrane dry and exposed.
Can you survey at the weekend?
We carry out surveys on weekdays, Saturdays and Sundays. To find a day that suits you, phone 07833 053749 or email us.