Surrey · London and the South East
Electronic Leak Detection in Redhill
Electronic leak detection to pinpoint holes in flat roof membranes in Redhill, using drones and thermal imaging where applicable. Call or email for a price.
- New membranes needing a check before handover
- Punctures from foot traffic or tools
- Failed seams and laps
Common roof problems in Redhill
Water travels under flat roof membranes. The leak may show some distance from where water gets in, so tracing it by eye is difficult.
Here are some of the things we see frequently:
- New roofs to check before paving or planting
- Failed seams and laps
- A flat roof leak that cannot be traced
- Patched roofs that still leak
For site and facilities teams at buildings like St Joseph's Catholic Primary School, schools and public buildings frequently have big flat roofs, and their outlets and upstands need regular checks.
Choosing a roof surveyor
- Is VAT included in the price?
- What they will not be able to tell you
- Do they have a CAA Flyer ID and Operator ID for drone work?
- Which parts of the roof they’ll actually see
About our electronic leak detection in Redhill
There are different ELD methods. Low-voltage methods typically need a wet roof surface 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’ll explain our choice. We will say if your roof doesn’t suit either method at the outset. We survey commercial flat roofs, single-ply roofs and green roofs, and common reasons people get in touch are stains far from any visible defect and gaps at membrane joints.
In a town like Redhill, flat roofs are common on rear extensions, garages, porches and dormers. Older ones are frequently felt, which frequently lasts around 15–20 years, while newer ones may be EPDM rubber or GRP fibreglass. The usual warning signs are standing water, splits and edges coming away. Standing water days after rain often shows a flat roof needs attention.
We write the report in plain English, so you do not need to be a roofer to follow it. Photos show what each point refers to.
- Place
- Redhill (RH1, RH2)
- Wider area
- Surrey
- Price
- Quoted for your roof
- Report
- A written report with photos, by email
- Appointments
- Weekdays, Saturdays and Sundays
- Insured
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Nearby places to Redhill
More services for Redhill
How it works
Expect us to ask a few questions before we start, about the roof’s history, any leaks and past repairs. The inspection then takes longer on a large roof than a small one, and the build-up of the roof makes a difference too. For a visit in Redhill, we need access to the loft, any rooms with leaks or stains, and the outside of the building. Mention gates, side passages and anything at the back. Visits can be on weekdays, Saturdays or Sundays.
- 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.
How to prepare
- Let us know about parking near the property
- Jot down any questions you want answered
- Move anything stored under the loft hatch
Booking a survey
Getting a price is simple: just ring 07833 053749 or use the contact form, let us know about the property and we’ll explain which survey suits. The price is agreed up front.
Advice
Different roofs, different checks
Single-ply membranes
ELD often works on single-ply membranes but it depends on the product and layers.
Green and ballasted roofs
Green roofs and ballasted roofs cover the waterproofing. Some methods can work through these layers, depending on the build-up.
Tips that help
A few practical points come up again and again on our surveys. They apply to most roofs:
- Share any drawings of the roof
- Act on new leaks promptly
- Ask contractors to protect the membrane
- Check new waterproofing before handover
After your roofer repairs the breaches, a retest can confirm them if the build-up allows.
Clear flat roof outlets regularly. Water that sits on the roof finds breaches faster.
What you can safely check yourself
The one thing to avoid is getting up close. Slates, tiles, flat roofs and rooflights can give way. That part is for a survey.
Keep a simple record: when leaks happen, ground-level photos and any past roof work. Share it with us as you book.
What this survey can’t tell you
In fairness, there are limits to any roof survey:
- The extent of water in the insulation
- Repairing the breaches (that is for your roofer)
- Roofs whose membrane or build-up is not suitable
If in doubt, phone 07833 053749 or use the contact form and we will point you to the right survey. What a survey covers and doesn’t.
Roof types and parts we check
- Commercial flat roofs
- Green roofs
- Flat roof membranes
- Liquid-applied waterproofing
- Roof terraces and balconies
- Single-ply roofs
Local flat roofs in Redhill
Handmade clay tiles and tile-hung walls are typical of Surrey’s older houses. Horsham stone slab roofs survive on some old buildings in Surrey. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. Before planning roof work on an older home, find out whether it is listed or in a conservation area. 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.
Take an older house close to Saint Matthew's Church: flat-roofed rear additions and dormers added over the years are worth checking. For landlords with property near Redhill station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Redhill is about 9 miles north of Crawley, in Surrey. Whether the building in Redhill is a house, a flat or a commercial unit, the roof can be surveyed. Our area takes in places right across Surrey, large and small. You can also see our page for Crawley.
Postcode districts we cover here for electronic leak detection: RH1 and RH2. You will find streets such as High Street, Station Road and Church Road, all of which we cover. With the A23 and A25 close by, Redhill is simple for us to get to. Nearby, we also carry out electronic leak detection in Earlswood (1 mile south), Holmethorpe (1 mile north-east), Meadvale (1 mile south-west), South Earlswood (2 miles south) and South Nutfield (2 miles south-east). Larger places within reach include Epsom (8 miles north-west), Horley (4 miles south), Ewell (9 miles north-west), Walton-on-Thames (14 miles north-west), Caterham (5 miles north-east) and Dorking (7 miles west). Redhill is one of the larger places we cover in Surrey.
Local landmarks in Redhill
We work in homes and buildings around The Carrington School, Nutfield Marshes and Dunottar School, among other places. There is a railway station in Redhill itself: Redhill station. Other landmarks nearby include The Belfry (under half a mile north) and Surrey Fire Museum (1.2 miles west). Green spaces nearby include Colley Hill and Reigate Heath.
Redhill questions
Does a conservation area affect roof work in Redhill?
Your council is the best source, with Historic England’s list for listed buildings. Both listing and conservation areas can limit changes of roofing material, and councils can also use Article 4 directions.
What do I need to do before a survey in Redhill?
Mostly, it is about access: the loft hatch, any locked gates and where to park in Redhill. It also helps to know about any leaks or earlier repairs.
Do you use low-voltage or high-voltage testing?
The method is chosen to suit the roof. Low-voltage testing typically needs a wet surface and high-voltage methods need the membrane dry and exposed.
Can you find leaks on a covered flat roof?
Sometimes. It depends on the build-up and the layers above the membrane and parts may need to be lifted. We’ll discuss it before we quote.
Does the report include photos?
Yes. The report includes photos of what we found, so you can see each point for yourself.
Do you survey roofs on blocks of flats?
Yes, once whoever controls the roof agrees access. We check the parts we’re given access to, and the report makes that clear.
Is it a structural engineer’s report?
No. Our survey isn’t a structural engineer’s report, and it does not include calculations. If we see signs that need an engineer’s opinion, we will recommend one.