Surrey · London and the South East
Ranmore Common Electronic Leak Detection
Electronic leak detection to pinpoint holes in flat roof membranes for Ranmore Common, from an experienced roof surveyor. You get a clear written report with photos.
- Leaks through a covered membrane
- New membranes needing a check before handover
- Holes left by work on the roof
Leave it or get it looked at?
Opening up a roof to hunt for a leak is disruptive. ELD aims to locate the breach first so your roofer knows where to work. Matching old materials, like handmade tiles or stone slates, can take time to source. Spotting a problem early leaves room to find them.
The cost of a survey depends on the roof: how big it is, how high it is, the number of separate roofs and how safely it can be seen. We quote electronic leak detection for each roof, as the method and time depend on the roof.
Why book with us
- Surveys on weekdays and at weekends
- Drone flown under a CAA Flyer ID and Operator ID
- Insured for professional indemnity and public liability
- Every finding written up with photos
Read how roof surveys are priced and two real surveys.
How electronic leak detection works in Ranmore Common
Electronic leak detection, or ELD, finds holes in flat roof waterproofing membranes. It works with an electrical current which can only get through the membrane at a breach. It can find holes too small to spot by eye, so your roofer can repair them. The results come in a report with photos. If you’ve noticed patched roofs that still leak and breaches around outlets and penetrations, a survey will tell you what’s going on, whatever the roof.
Some older homes in villages like Ranmore Common 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. Knowing the roof’s condition is the starting point. Changes that affect a listed building’s special interest need listed building consent.
You can share the report with anyone who needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent, whichever applies.
- Place
- Ranmore Common (RH5)
- Wider area
- Surrey
- Price
- Quoted for your roof
- Your report
- A written report with photos, by email
- When we survey
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
What electronic leak detection looks like in Ranmore Common
Historic houses such as Polesden Lacey, about 1.2 miles north, show how far back building in the area around Ranmore Common goes. 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. Ranmore Common has a number of hotels within about a mile and a half. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use.
A roof leak in a hotel or guest house around Ranmore Common means lost rooms as well as repairs. For an older house near a landmark such as Church of St Barnabas, the joins between later flat roofs and the old walls are where problems typically start.
Ranmore Common is about 2 miles north-west of Dorking, in Surrey. Bookings from Ranmore Common are handled just like any other: a call or an email, a price, then a date. We cover towns and villages across Surrey. You can also see our page for Guildford.
Every address in RH5 is within our area for electronic leak detection. Neighbouring places we cover for electronic leak detection include Westcott (1 mile south), Westhumble (2 miles north-east), Dorking (2 miles south-east), Pixham (2 miles east) and Wotton (2 miles south-west). Larger places within reach include Guildford (9 miles west), Woking (10 miles north-west), Epsom (8 miles north-east), Horley (10 miles south-east), Redhill (8 miles east) and Ewell (9 miles north-east).
Around Ranmore Common
Locally, jobs take us to homes and businesses close to Pippbrook House, The Priory CofE Voluntary Aided School and Milton Heath and The Nower and the streets around them. The closest station to Ranmore Common is Dorking West station, roughly 1.1 miles east of the centre. Other landmarks nearby include Betchworth Castle (3 miles east) and Mesolithic Museum (3.3 miles south-west). Green spaces nearby include Box Hill and Combe Bottom.
Honest limits
Some things can’t be seen without opening up the roof, so a survey has limits:
- Repairing the breaches (that’s for your roofer)
- Water entering through details rather than the membrane
- Moisture spread under the membrane
Not sure which survey suits your roof? You can call 07833 053749 or send us an email and we’ll tell you. What our survey covers.
Roofs we survey in Ranmore Common
- Green roofs
- Single-ply roofs
- Roof terraces and balconies
- Flat roof membranes
- Liquid-applied waterproofing
- Commercial flat roofs
DIY checks: what’s safe
Keep a simple record: dates of leaks, photos from ground level and any work done on the roof. Share it with us when booking, as it helps us focus the survey.
A DIY look is useful, but it is not a survey. From the ground, valleys, flashings and the backs of chimneys are frequently out of sight.
Questions from Ranmore Common
Can you look at the flat roof of a hotel or office near Ranmore Common?
Yes, we cover commercial roofs as well as homes. Roof access is agreed with the building manager or owner beforehand.
How do I find out if my home in Ranmore Common is listed?
The council and Historic England’s list are the places to check. It is worth checking before planning roof work, as both can affect what’s allowed.
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. We’ll rearrange with you if the weather isn’t right.
Do you need to get into the loft?
Where it’s relevant to the survey and there’s safe access, yes. A clear path to the hatch helps, and if the loft cannot be reached safely, the report says so.
Do you carry professional indemnity insurance?
Every survey is covered by professional indemnity and public liability insurance, and we can provide details if a managing agent needs them.
Will you walk on the roof?
Only where it’s safe to do so. We look at everything that can be seen safely: from the ground, from windows, from inside the roof space, from the roof where it’s safe and by drone where applicable. Anything we cannot see is noted in the report.
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.
Places near Ranmore Common
Other services in Ranmore Common
The survey, step by step
We work from the outside in: first the slopes, edges and gutters from every safe viewpoint, then the loft space where it can be reached. All told, expect a time that depends on the size of the roof and how it’s built, and we’ll give you a guide when quoting. In a small place like Ranmore Common, access is normally the main thing to plan. Mention any outbuildings, barns or garages you want included, and anything about the roof you already know. Weekday and weekend visits are available.
- First, we confirm which roof areas are included.
- We get the roof ready for testing.
- We work across the roof with the test equipment.
- Each breach found is located and recorded.
- You receive the results to pass to your roofer.
Preparing for the visit
- Keep pets inside or away from the areas we’re looking at
- Make a note of anything you’d like us to look at
- Gather any invoices or paperwork from past roof work
How to book
To get a price for electronic leak detection in Ranmore Common, call 07833 053749 or use the contact form. The address, the type of property and what you need to know help us price the survey accurately.
Advice
Useful tips for Ranmore Common property owners
From years of surveys, a few habits stand out as worth the effort:
- Note where leaks show inside and when
- Have roof specifications to hand
- Act on new leaks promptly
- Use boards when working on the roof
Wet insulation may need attention after a leak. Your roofer can advise on that, and moisture readings can help.
Act on leaks quickly. The longer water gets in, the more insulation and decking can be affected.
What we’re asked to look at in Ranmore Common
Flat roof membranes can be punctured by foot traffic, dropped tools or debris. Many are tiny but water still finds them.
Problems we come across often include:
- Leaks through a covered membrane
- Damp inside with no sign on the roof
- Holes around roof penetrations
- Leaks through a flat roof with no obvious cause
If you own a rental within reach of Dorking West station, the flat roof over a let home is worth a look before it becomes a tenant complaint.
Before booking anyone
- Whether they hold professional indemnity and public liability insurance
- What’s outside the scope of the survey
- Do they have a CAA Flyer ID and Operator ID for drone work?
- Whether the roof space is looked at, where there is one