Hertfordshire · London and the South East
Electronic Leak Detection in Sarratt
Electronic leak detection to pinpoint holes in flat roof membranes in Sarratt, with drones and thermal imaging where they help. Get in touch for a price.
- Failed seams and laps
- Leaks through a covered membrane
- Holes left by work on the roof
Local flat roofs in Sarratt
Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere. The wider area around Sarratt has a long history of building, with Chenies Manor House about 1.8 miles west. If you own one of the older houses, expect a mix of original materials and later repairs on the roof, and a listed home or one in a conservation area may need consent for changes of material.
For an older house near a landmark such as Church of the Holy Cross, flat-roofed rear additions and dormers added over the years are worth checking. If you own a rental within reach of Chorleywood station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Sarratt is about 3 miles north of Rickmansworth, in Hertfordshire. Bookings from Sarratt are handled just like any other: a call or an email, a price, then a date. Sarratt is one of the towns and villages in Hertfordshire where we work for electronic leak detection. There is also a page for London.
Electronic leak detection in WD3 work the same way as everywhere else we cover. Whether your property is on Alexandra Road, Downer Drive and The Briars or anywhere close by, we can survey it. If you are just outside Sarratt, we cover Micklefield Green (1 mile south-east), Bucks Hill (1 mile north-east), Chandler's Cross (2 miles south-east), Loudwater (2 miles south) and Chorleywood West (2 miles south). Within a short drive, we also cover Watford (4 miles east), Hemel Hempstead (5 miles north), St Albans (8 miles north-east), Welwyn Garden City (15 miles north-east), Harpenden (11 miles north-east) and Hatfield (12 miles north-east).
Around Sarratt
Locally, jobs take us to homes and businesses close to The Boot Public House and St Clement Danes School. For rail, the closest station is Chorleywood station, roughly 2.3 miles south-west of the centre. Other landmarks nearby include Chiltern Open Air Museum (3.8 miles south-west) and Leavesden Hospital (4 miles east). Not far away are Sarratt Bottom nature reserve and Tumbling Bay.
Electronic leak detection in Sarratt: what you get
You get a report showing the location of each breach with photos. It tells your roofer exactly where to repair instead of hunting for the leak. Repair costs aren’t part of the report, so your roofer prices the work. Testing again after repairs can confirm the breaches have been dealt with if the build-up allows. Results come in a written report with photos. If you’re worried about a flat roof leak that can’t be traced and breaches hidden under paving or planting, we can find out what’s behind it, on green roofs, flat roof membranes and roof terraces and balconies alike.
In a small place like Sarratt, a flat roof can stand in the open, so edges, upstands and laps take a beating. Older felt roofs, often around 15–20 years in life, show it first. Rubber and GRP last longer, though trims and joints still need a look. Exposed edges are usually the first part of a flat roof to go.
We keep jargon out of it: if work is needed, the report says so clearly, along with how urgent it is.
- Location
- Sarratt (WD3)
- Wider area
- Hertfordshire
- Cost
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
How it works
Where it’s relevant and can be reached safely, the roof space is checked as well as the outside. Inside, we look for staining, damp, gaps and signs of movement, as far as the space allows. All in, the survey normally takes more time on a big roof than a small one, with the construction of the roof playing a part too. In a hamlet or village like Sarratt, a postcode does not always lead to the right gate, so a few directions are welcome. The visit itself is the same as anywhere else.
- First, you tell us about the roof build-up and where water is showing.
- We confirm whether the roof is suitable for electronic testing.
- 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.
How to prepare
- Dig out any old roof reports or invoices
- Keep pets in another room
- If you’re buying, let the agent know when we’re coming
Arrange a survey
Photos help, if you have them. Take them safely from the ground or a window; never climb up to get a better view. To send them or to book, call 07833 053749 or email us.
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Signs you need electronic leak detection in Sarratt
Joints and laps in a membrane can fail over time. A gap that’s hard to see can let water in for months before it shows.
Common reasons to book include:
- Punctures from foot traffic or tools
- Leaks that return after repairs
- Leaks through a flat roof with no obvious cause
- Breaches hidden under paving or planting
If you look after a building such as Sarratt Church of England Primary School, large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Before booking any roof surveyor
- Will the report include photos?
- How they’ll see the roof: from the ground, the loft, the roof or by drone
- What insurance they carry
- Whether the price includes VAT
Questions from Sarratt
Is my home in Sarratt listed or in a conservation area?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it is in a conservation area. 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.
Do you cover smaller places like Sarratt?
Yes, Sarratt is on our map. A small place gets exactly the same survey as a big one, with the route planned beforehand.
What’s the best way to book?
To arrange a survey, ring 07833 053749 or email us and let us know the address and what you’d like to know. We will confirm the price and agree a day with you.
Does this replace a RICS home survey?
No. Our survey is a roof survey, not a RICS Level 2 or Level 3 survey of the whole building. It focuses on the roof and can sit alongside a RICS survey.
Are you structural engineers?
No. Visible signs like deflection or sagging are recorded, but calculations and an engineer’s opinion are outside what we do. If one is needed, the report says so.
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.
Will you repair the leak?
No, our part is finding the breaches. Your roofer uses the report to target the repair.
Nearby places to Sarratt
Other services in Sarratt
Landlord and commercial surveys in Sarratt
Landlords, agents and building managers in Sarratt and across Hertfordshire can book any of our surveys. To discuss a property or a block, phone 07833 053749 or drop us an email.
A roof problem in a let property affects your tenants as well as the building. A survey helps you spot issues early and plan the work around your tenants.
What happens if roof problems are left?
ELD before paving, ballast or planting goes on is simpler. Once layers are added, finding a breach is harder. For older village homes like those around Sarratt, the right replacement materials are not always easy to find quickly. Spotting a problem early leaves room to find them.
For a price for your roof in Sarratt, ring 07833 053749 or email us with the address and a few details. The price is agreed before a date is set.
Why us?
- Over 5,000 surveys carried out
- Over 20 years’ experience
- Thermal imaging and drones used where they help
- An independent view of the roof
Take a look at our cost guide and what we found on two real jobs.
What you can safely check yourself
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.
Your own check is a good start, but it isn’t a survey. From the ground, valleys, flashings and the backs of chimneys are often out of sight.
What affects the cost of electronic leak detection
We confirm the price for the job before you book. This is what makes a difference:
- If the survey needs thermal imaging or a drone
- Extensions, dormers and garages with roofs of their own
- Commercial roofs and larger buildings
- How complicated the roof is, with its valleys, chimneys and parapets
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. We confirm the exact price before booking.
Helping us price your survey
A little information up front helps. Please include:
- Photos of the roof, taken safely from the ground or a window
- How the loft is reached, if there is one
- Where any leaks, stains or damp patches show inside
- The type of building and roof, such as pitched or flat
You can call us seven days a week, including Saturdays and Sundays. For a price or to book, ring 07833 053749 or email us.