Hertfordshire · London and the South East
Electronic leak detection in Codicote, Hertfordshire
Wondering about the flat roof membrane at a property in Codicote? We carry out electronic leak detection in Codicote and across Hertfordshire.
- Gaps at membrane joints
- Repairs that haven’t stopped the leak
- Damage from equipment installers
Rented homes, blocks and businesses
Buyers’ agents can book surveys on behalf of their clients. Reports are emailed, so they’re easy to pass on, photographs included.
Landlords and agents in Codicote book surveys as well as homeowners. A written report with photographs gives you a clear record of the flat roof membrane, useful for planning maintenance.
Electronic leak detection in Codicote
A leak in a flat roof frequently shows up a long way from where the water gets in. So the stain inside rarely sits under the hole. ELD tests the waterproofing directly and locates the breach. It is testing only, and the repair is for your roofer. On a suitable roof, it takes the guesswork out of finding the hole. We then send you the results in a written report. We’re often asked to look into water coming in under a flat roof and waterproofing to test before it’s covered, on single-ply roofs, green roofs and flat roof membranes.
In smaller places like Codicote, flat roofs are mostly on extensions, garages, porches and dormers. Even a small flat roof can let a good many water into the room below. What it’s covered in, and how well it was laid, decides what it needs. Ponding, splits and lifting edges are the signs to look for from a window.
Findings are set out part by part, from the coverings down to the gutters, each with a short note and a photo. You’ll see the good as well as the bad.
- Place
- Codicote (SG4)
- Region
- Hertfordshire
- Cost
- Quoted for your roof
- Report
- Emailed report with photos and recommendations
- Appointments
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Page updated
- 27 October 2026
How the survey works
When we arrive, we begin with a quick chat about the roof and anything that is worrying you. We then inspect everything that can be seen safely. Most surveys take more time on a big roof than a small one, with the construction of the roof playing a part too. A visit to a smaller place like Codicote is no different on the day: outside, inside and from any safe vantage point, in that order. It helps to show us anything you’ve already noticed.
- We agree the area to be tested.
- We get the roof ready for testing.
- Testing runs across the agreed area.
- Each breach found is located and recorded.
- The report is sent for your roofer to act on.
Before we arrive
- For flats, make sure roof access has been agreed
- Gather any invoices or paperwork from past roof work
- Jot down any questions you want answered
Booking a survey
Every survey is priced before it’s booked, so you know where you stand. We quote electronic leak detection for each roof, as the method and time depend on the roof. To book, ring 07833 053749 or send us an email.
Related advice
What affects the price in Codicote
All our prices include VAT. The things that change the price are:
- The size of the roof
- How many separate roofs there are, like extensions, dormers and garages
- Building height and the viewpoints available
- If the survey needs thermal imaging or a drone
To find out what your survey will cost, call 07833 053749 or drop us an email and tell us about the roof. The price is agreed before a date is set.
Booking your survey
There is no need for technical words. Just tell us:
- Dates you are working to, such as exchange
- What made you get in touch
- What kind of property and roof it is
- The address and postcode of the property
A quick phone call is typically the easiest start: ring 07833 053749 or use the contact form and we will ask a few questions about the roof. The price is agreed before a date is set.
Why get it checked now?
Testing a new membrane before it’s covered is easier than tracing a leak later. Once layers are added, finding a breach is harder. Blocked gutters on homes around Codicote overflow and soak walls, particularly where trees overhang. It’s easy to sort the cause early and slow to dry a damp wall.
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. You’ll know the price for your survey before you book.
What you get with us
- Thermal imaging and drones used where they help
- Satisfaction rate of 98%
- Every finding written up with photos
- More than 5,000 surveys completed
Practical tips
There is plenty you can do without going near the roof. What helps most:
- Make sure trades protect the waterproofing
- Test new membranes before covering them
- Note where leaks show inside and when
- Get leaks traced quickly
You receive a report showing where each breach was found, with photos. Pass it to your roofer to repair the breach points.
Don’t leave a flat roof leak running. Water under a membrane can spread.
Codicote questions
Is Codicote within the area you cover?
Yes, smaller places are covered as well as towns. We cover the whole of London and South East England. Just mention lanes, gates or anything else about the route when booking.
Is Codicote in the area you cover?
Yes, Codicote is within the area we cover. Our area covers London and South East England. Just phone 07833 053749 or email us and let us know about the property.
Will you repair the leak?
No, our part is finding the breaches. The report gives your roofer the locations.
Will you fly a drone over my roof?
Yes, where it is applicable. Flights depend on the weather on the day and airspace rules, including flight restriction zones near airports. We hold a CAA Flyer ID and Operator ID.
Can you test a green or ballasted roof?
In some cases. The layers on top and the build-up below decide it, and some may need lifting. We talk this through first.
How long have you been surveying roofs?
More than 5,000 surveys over 20+ years, across London and South East England.
What’s in the survey report?
It works through the roof part by part, in writing and with photos. Points are put with the most urgent first where relevant.
Electronic leak detection in Codicote: local notes
Historic houses such as Shaw's Corner, about 1.7 miles south-west, show how far back building in the area around Codicote 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. Older houses in the South East often have slate or clay tile roofs, while many later estates have concrete tiles, and flat-roofed additions turn up almost everywhere. Mixed in with those pitched roofs are a good many flat ones, over rear extensions, dormers, garages and shops.
Anyone responsible for a site like Codicote Church of England Primary School will know that a large flat roof with plenty of outlets and rooflights has many places where a membrane can fail. If you run a business near Howard Centre, a flat roof over a business is out of sight and out of mind until it leaks. For an older house near a landmark such as Parish Church of St Giles, the joins between later flat roofs and the old walls are where problems normally start.
Codicote is about 4 miles north-west of Welwyn Garden City, in Hertfordshire. Surveys in Codicote work the same way as everywhere we cover: a proper look at whatever is safely visible, photos and a clear written report. Our area takes in places right across Hertfordshire. There’s also a page for London.
We survey roofs across the SG4 postcode area for electronic leak detection. That includes homes and businesses on High Street, Baker's Lane and The Green and the roads around them. Close by, we survey roofs in Codicote Bottom (1 mile west), Driver's End (1 mile north), Nup End Green (1 mile north-east), Pottersheath (1 mile east) and Ayot St Lawrence (1 mile south-west). Within a short drive, we also cover Watford (15 miles south-west), Hemel Hempstead (12 miles south-west), Stevenage (5 miles north-east), St Albans (8 miles south-west), Welwyn Garden City (4 miles south-east) and Harpenden (5 miles south-west).
Landmarks near Codicote
Typical jobs here are in homes near The Goat Public House, Monk's Walk School and Danesbury Park. For rail, the closest station is Knebworth station, about 2.4 miles north-east. Well-known places in the area include Howard Centre (3.6 miles south) and Queen Elizabeth II Hospital (5 miles south-east). Not far away are Mardley Heath.
Different roofs, different checks
Single-ply membranes
Many offices and units have single-ply roofs. Laps and fixings are where holes often appear.
Inverted and paved roofs
Paving and terraces cover the membrane. Suitability depends on the layers.