Surrey · London and the South East
Electronic leak detection in Charlwood, Surrey
Get a clear view of the flat roof membrane at a property in Charlwood from an independent roof surveyor. Visits run on weekdays and weekends, in the daytime.
- Damp inside with no sign on the roof
- Patched roofs that still leak
- New membranes needing a check before handover
About our electronic leak detection in Charlwood
There are different ELD methods. Low-voltage testing is typically done with the surface wet and high-voltage methods need the membrane dry and exposed. The right method depends on the membrane and the build-up of the roof and we explain which we will use. If neither method suits your roof, we will tell you before any testing starts. We survey commercial flat roofs, green roofs and flat roof membranes, and common reasons people get in touch are damage from equipment installers and leaks showing away from the breach.
Older buildings in small places like Charlwood 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 is written in plain words, so it makes sense without any roofing background. Photographs show what each point refers to.
- Where
- Charlwood (RH6)
- Wider area
- Surrey
- Prices
- Quoted for your roof
- Report
- A written report with photos, by email
- When we survey
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
How the survey works
Once we have finished looking, we write up our findings in a report with photos, emailed to you. As for time on site, it typically takes more time on a big roof than a small one, with the construction of the roof playing a part too. Somewhere as small as Charlwood, access is frequently the only tricky part. Mention any outbuildings, barns or garages you want included, and anything about the roof you already know. Weekday and weekend visits are available.
- 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 method depends on the membrane and what sits above and below it.
- Testing runs across the roof to locate breaches in the membrane.
- We send a report with photos of each breach so your roofer can repair it.
Before we arrive
- Have any questions written down, so nothing gets missed
- Have keys ready for side gates, garages or roof access doors
- Have any paperwork from past roof work to hand
Book a survey
Photos help, if you have them. Take them safely from ground level or a window, and please don’t climb up for a closer look. To send them or to book, call 07833 053749 or send us an email.
Read more
Flat roofs in Charlwood
If your home is older, it’s worth knowing whether it is listed or in a conservation area before planning roof work. Changes that affect a listed building’s special interest need listed building consent, and councils can also use Article 4 directions to control changes in conservation areas. Charlwood has a number of hotels within about a mile and a half, and like offices and blocks, hotels often sit under flat roofs. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use.
Anyone responsible for a site like Charlwood Village Primary School will know that schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks. If your house is among the older ones in the streets near Church of St Nicholas, the joins between later flat roofs and the old walls are where problems typically start.
Charlwood is about 3 miles south-west of Horley, in Surrey. Roofs in Charlwood get the same thorough look as anywhere else in Surrey. Across Surrey, we cover Charlwood.
We work across the RH6 postcode area for electronic leak detection. If you need electronic leak detection at a property on The Street, Yew Tree Road and Rectory Lane or anywhere close by, we can survey it. If you’re just outside Charlwood, we cover Russ Hill (1 mile south-west), Norwood Hill (2 miles north), Cudworth (2 miles west), Ifieldwood (2 miles south) and Ifield (2 miles south). Within a short drive, we also cover Epsom (13 miles north), Horley (3 miles north-east), Redhill (6 miles north-east), Ewell (14 miles north), Reigate (6 miles north) and Caterham (11 miles north-east).
Near you in Charlwood
In Charlwood, that means homes and buildings near The Half Moon pub and Edolph's Copse, among other places. The closest station to Charlwood is Ifield station, about 2.8 miles south of the centre. Nearby you’ll also find Crawley Museum (3.1 miles south-east) and County Mall (3.4 miles south-east). For a walk, there is Tilgate Lake.
When you need someone else
In fairness, a roof survey has limits:
- Leaks from walls, copings or rooflights
- How wet the insulation is
- Fixing the holes we find
Not sure which survey suits your roof? You can phone 07833 053749 or email us and we’ll tell you before you book. What our survey covers.
Roof types and parts we check
- Green roofs
- Commercial flat roofs
- Roof terraces and balconies
- Single-ply roofs
- Liquid-applied waterproofing
- Flat roof membranes
Tips from our surveys
A little preparation and a few simple habits help, both for the survey and for the roof itself. Some pointers:
- Do not let outlets block
- Do not keep patching the same spot
- Record dates and spots where water appears
- Stay off the flat roof unless needed
Keep the report with the roof’s records. It’s a dated record of the membrane’s condition.
Keep outlets and gutters on flat roofs clear. Standing water puts more pressure on any weak point.
FAQs for Charlwood
How do I find out if my home in Charlwood is listed?
We can’t confirm that for you, but Historic England’s list and your council can. A change of roofing material may need consent in either case, and councils can also use Article 4 directions.
Do you look at commercial flat roofs near Charlwood, such as hotels?
Yes, commercial buildings, hotels included, are part of the work. Access to the roof is sorted out with whoever manages the building before the day.
Will I get photos?
Yes. Photos are part of every report, so you can see exactly what each finding refers to.
Will you walk on the roof?
Only if it’s safe. We inspect everything that’s safely in view: from ground level, from windows and vantage points, from the roof space, from the roof itself where safe and by drone where applicable. Anything we cannot see is noted in the report.
Are you structural engineers?
No. We’re experienced roof surveyors, and visible signs such as sagging are noted, but we do not provide calculations or an engineer’s opinion. If one is needed, the report says so.
Which days do you carry out surveys?
Visits run seven days a week in the daytime. Just say which days work for you.
When does the report arrive?
That depends on the survey you book: Basic within 48 hours, Standard in 24–48 hours and Premium the same day. Reports are sent by email.
Why act early in Charlwood
ELD before paving, ballast or planting goes on is simpler. Once layers are added, finding a breach is harder. In a place like Charlwood, a barn or garage roof left to fail puts whatever is inside at risk. A quick look before winter can save a lot.
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. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Why choose Independent Roof Survey in Charlwood
- Over 20 years’ experience
- 98% customer satisfaction
- More than 5,000 surveys completed
- Drone and thermal imaging surveys available
See how roof surveys are priced and what we found on two real jobs.
When to book a survey in Charlwood
Other trades on the roof can puncture the waterproofing. Fixings, equipment and foot traffic can leave small holes.
Most people get in touch when they’ve noticed one of these:
- Damp inside with no sign on the roof
- Holes around roof penetrations
- Leaks that return after repairs
- Leaks through a covered membrane
If you look after a shop, office or commercial unit, for example near County Mall, outlets and upstands on commercial flat roofs are the places to check before trouble starts.
Before you book any roof surveyor
- Will the report include photos?
- Which limits apply to the survey
- Their track record with similar roofs
- Their report turnaround times
Can I check my roof myself?
A DIY look is useful, but it is not a survey. From ground level, valleys, flashings and the backs of chimneys are frequently out of sight.
A lot can be seen from the ground. With binoculars, look for slipped or missing slates and tiles, gaps along the ridge and leaning chimneys. Please don’t climb up for a closer look.