Hertfordshire · London and the South East
South Mimms Electronic Leak Detection
Electronic leak detection across South Mimms, with over 20 years’ experience behind it. Every survey ends with a written report and photographs.
- Repairs that haven’t stopped the leak
- Leaks through a flat roof with no obvious cause
- Holes left by work on the roof
About our electronic leak detection in South Mimms
Some flat roofs can’t be tested electronically. Certain membranes conduct electricity and some roofs do not have a suitable layer beneath the membrane. If your roof isn’t suitable, we’ll tell you at the start. Any details you have about the membrane and build-up help us decide, including drawings, specifications or the roofer’s paperwork. It avoids arranging a test that cannot give results. Typical surveys look at breaches around outlets and penetrations and waterproofing to test before it’s covered, across flat roof membranes, liquid-applied waterproofing and commercial flat roofs.
In a village or hamlet like South Mimms, flat roofs are normally on extensions, garages, outbuildings or barn conversions. They need the same care as any town roof: the covering, the edges, the upstands and where water drains away. We simply plan the journey and access beforehand. If there are outbuildings or garages with flat roofs, mention them when booking.
Where we cannot see part of the flat roof membrane, the report says so. You will know exactly what was inspected and what wasn’t.
- Location
- South Mimms (EN6)
- Region
- Hertfordshire
- Price
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- When we survey
- Weekdays, Saturdays and Sundays
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
Questions from South Mimms
Does a conservation area affect roof work in South Mimms?
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. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Do you cover smaller places like South Mimms?
We do. Villages and rural addresses get the same survey as a town house.
I live in a flat. Can you survey the roof?
Yes. A shared roof needs access agreed first. Tell us about it when you book and we will plan the survey around it.
Can you inspect my roof with a drone?
Where it helps and the rules allow, yes. We hold a CAA Flyer ID and Operator ID and fly a drone under 250g, and every flight depends on the airspace and the weather.
Are you insured?
We hold professional indemnity and public liability insurance, for every survey we carry out.
What if it rains on the day?
It can, depending on the survey. Drones cannot fly safely in strong wind or heavy rain, and thermal imaging works best after a sunny day, with a dry roof and little wind. If the conditions are not right, we will talk to you about another date.
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, so it sits alongside a building survey rather than replacing it.
The survey, step by step
We look at the roof from outside and, where it is relevant and there is safe access, from inside the loft space too. Inside, we look for staining, damp, gaps and signs of movement. 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. Somewhere as small as South Mimms, access is frequently the only tricky part. Let us know about outbuildings, past repairs and any leaks you’ve noticed. Visits can be on weekdays, Saturdays or Sundays.
- You tell us about the roof and where water is showing.
- We check whether the membrane and build-up suit ELD.
- The test method is chosen to suit the roof.
- The membrane is tested and breaches are found.
- You get a report with photos of each breach.
Before we arrive
- Leave a clear route to the loft
- Agree roof access with the managing agent if it’s shared
- Check pets are kept safely away
Arrange a survey
If you have photos of the roof, send them over. Take them safely from the ground or a window. To get started, call 07833 053749 or send us an email.
Advice
What this survey can’t tell you
In fairness, there are limits to any roof survey:
- Leaks from plumbing or windows
- Carrying out the repair work
- Parts of the roof covered by fixed equipment
If in doubt, ring 07833 053749 or send us an email and we’ll suggest the right survey before you book. What our survey covers.
What this survey covers
- Roof terraces and balconies
- Flat roof membranes
- Liquid-applied waterproofing
- Green roofs
- Commercial flat roofs
- Single-ply roofs
Practical tips
Over many surveys, some simple habits stand out as worth the effort:
- Note where leaks show inside and when
- Avoid repeated repairs without finding the cause
- Do not let outlets block
- Have roof specifications to hand
Wet insulation may need attention after a leak. Your roofer can advise on that, and moisture readings can help.
Act on leaks quickly. Water under a membrane can spread.
How we price electronic leak detection
What a survey costs depends on the time and equipment it needs. That comes down to:
- Commercial roofs and larger buildings
- Extensions, dormers and garages with roofs of their own
- Building height and the viewpoints available
- Chimneys, valleys, parapets and other details
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. The price is confirmed before you book.
Getting in touch
Some details help us point you to the right survey and price. When you contact us, tell us:
- The kind of building and roof involved
- Whether there is a loft hatch, a shared roof or tricky access
- Any marks or damp showing indoors
- Your postcode, so we can check access and travel
Every survey is priced before it’s booked, so you know the cost up front. We quote electronic leak detection for each roof, as the method and time depend on the roof. For a price for your roof, phone 07833 053749 or send us an email.
Towns and villages near South Mimms
What else we do in South Mimms
Leave it or get it looked at?
Not every leak is in the membrane. ELD helps rule the membrane in or out, so other causes can be checked. Outbuildings and barns around South Mimms are easy to forget, but a failed roof there can spoil what’s stored inside. A quick look before winter can save a lot.
To find out what your survey will cost, call 07833 053749 or send us an email and let us know about the roof. The price is agreed before a date is set.
Why book us in South Mimms
- Every finding written up with photos
- Drone flown under a CAA Flyer ID and Operator ID
- Drone and thermal imaging surveys available
- An independent view of the roof
Read how roof surveys are priced and what we found on two real jobs.
DIY checks: what’s safe
The one thing to avoid is getting up close. Slates, tiles, flat roofs and rooflights can give way. That’s where a survey comes in, using safe viewpoints and a drone where it applies.
Fresh stains on ceilings or walls after rain are worth noting. Photograph them and note the date, which helps when we check the roof.
Electronic leak detection in South Mimms: local notes
Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates, and flat-roofed additions turn up almost everywhere. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. Historic houses such as Wyllyotts Manor, about 1.6 miles east, show how far back building in the area around South Mimms goes. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and any change of roofing material on a listed home needs checking with the council first.
For site and facilities teams at buildings such as St Giles' CofE Primary School, ponding and blocked outlets on a wide flat roof are worth catching before the next wet season. The streets around a church such as Church of St Giles are often among the oldest in a place, and if your home is one of the older ones nearby, flat-roofed rear additions and dormers added over the years are worth checking. If you own a rental within reach of Potters Bar station, a flat roof over a rented flat is easy to forget until the tenant reports a leak.
South Mimms is about 2 miles west of Potters Bar, in Hertfordshire. In South Mimms, as across Hertfordshire, every roof gets the same careful survey. South Mimms is one of the places in Hertfordshire where we work for electronic leak detection. There’s also a page for London.
Surveys in EN6 are booked the same way as anywhere else. We offer electronic leak detection to properties on St Giles' Avenue, Blanche Lane and Greyhound Lane. If you’re just outside South Mimms, we cover Ridge (1 mile south-west), Dancers Hill (1 mile south-east), Kitts End (2 miles south-east), Well End (2 miles south-west) and Green Street (2 miles south-west). Within a short drive, we also cover Watford (8 miles west), Hemel Hempstead (11 miles west), Stevenage (15 miles north), St Albans (6 miles north-west), Welwyn Garden City (7 miles north) and Harpenden (10 miles north-west).
Local landmarks in South Mimms
Around South Mimms, our work takes us to homes and buildings near The White Hart Public House, North Mimms Park and Dame Alice Owen's School, among other places. The nearest railway station is Potters Bar station, roughly 1.6 miles east. Well-known places in the area include Spires Shopping Centre (2.9 miles south-east) and Shenley Hospital (2.7 miles west). Not far away are Darland's Lake and Furzefield Wood and Lower Halfpenny.