Hertfordshire · London and the South East
Nettleden Electronic Leak Detection
Find out the condition of the flat roof membrane at your property in Nettleden from an independent roof surveyor. We visit on weekdays and at weekends.
- Leaks that return after repairs
- Stains far from any visible defect
- Waterproofing to test before it’s covered
Electronic leak detection in Nettleden: what you get
Our ELD report shows where each breach was found with photos. Your roofer can then repair those points instead of hunting for the leak. Repair costs are not part of the report; that’s for your roofer to price. Testing again after repairs can confirm the breaches have been dealt with if the build-up allows. You get a photo-illustrated written report. We survey single-ply roofs, roof terraces and balconies and flat roof membranes, and people most often book us about gaps at membrane joints and patched roofs that still leak.
Flat roofs on exposed homes in small places like Nettleden take more wind and rain, which is hard on edges, upstands and joins in the covering. Felt roofs, which often last around 15–20 years, usually show it first. EPDM rubber and GRP coverings last longer, but their edges and joints still need checking. On an exposed roof, the edges tend to go first.
Where we can’t see part of the flat roof membrane, the report says so. That way, it’s clear what was covered and what wasn’t.
- Location
- Nettleden (HP1)
- Region
- Hertfordshire
- Cost
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- Appointments
- Weekdays, Saturdays and Sundays
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
Before and after the survey
A survey works best with a little help from you, before and after. Some tips:
- Keep foot traffic on flat roofs to a minimum
- Make sure trades protect the waterproofing
- Note where leaks show inside and when
- Have roof specifications to hand
Where the evidence points to walls, copings or rooflights, we’ll note it, with a suggestion of what to check next.
Keep people off the flat roof unless they need to be there. Feet and dropped tools are a common cause of holes.
Towns and villages near Nettleden
Other services in Nettleden
What we are asked to look at in Nettleden
Flat roof membranes can be punctured by foot traffic, dropped tools or debris. Some are too small to see, but still let water through.
Look out for signs like these:
- Water coming in under a flat roof
- Punctures from foot traffic or tools
- Holes around roof penetrations
- Patched roofs that still leak
If you look after a building like Great Gaddesden Church of England Primary School, a large flat roof with a good many outlets and rooflights has many places where a membrane can fail.
What to check before booking
- What the report includes, and whether it has photographs
- What they will not be able to tell you
- Do they have a CAA Flyer ID and Operator ID for drone work?
- Whether they hold professional indemnity and public liability insurance
How the survey works
After the inspection, everything we found is written up in a report with photographs, sent to you by email. On timing, it normally takes longer on a large roof than a small one, with the construction of the roof playing a part too. Somewhere like Nettleden needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. The roof is looked at from ground level, from windows, from the loft where there is safe access and from the roof where it is safe.
- We start by finding out what the roof is made of and where it leaks.
- We confirm whether the roof is suitable for electronic testing.
- We pick the low-voltage or high-voltage method that suits the roof.
- The roof is tested and any breaches are located.
- You get a report showing where each breach is, for your roofer to repair.
Getting ready for the survey
- Have any questions written down, so nothing gets missed
- Make sure pets are kept safely away
- Point out any leaks or damp patches
Booking a survey
You can call us seven days a week, including Saturdays and Sundays. For a price or to book, ring 07833 053749 or drop us an email.
Related advice
What a survey costs
What a survey costs depends on the time and equipment it needs. That comes down to:
- The type of building, from a house to a block or an office
- The number of roofs, including extensions and garages
- The height of the building and how the roof can safely be seen
- The shape of the roof and its details
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. The price is confirmed before booking.
What to tell us when you contact us
Here’s what helps us most when you get in touch:
- The kind of building and roof involved
- What’s prompted the survey
- Where any leaks, stains or damp patches show inside
- The property’s address and postcode
To get a price for electronic leak detection in Nettleden, phone 07833 053749 or email us. A few details about the property and the roof help us give you an accurate price.
What this survey cannot tell you
This is not a RICS building survey, a structural engineer’s report or an asbestos survey. It also has these limits:
- Fixing the holes we find
- Some conductive membranes
- Sections we can’t safely access
If you are not sure which survey you need, ring 07833 053749 or email us and we will give you a straight answer. What a survey covers and doesn’t.
Roof types and parts we check
- Green roofs
- Liquid-applied waterproofing
- Flat roof membranes
- Commercial flat roofs
- Roof terraces and balconies
- Single-ply roofs
What we look for on each type of roof
Bituminous membranes
Bitumen roofs can frequently be tested electronically, depending on what’s below.
Inverted and paved roofs
If the build-up rules out ELD, we’ll say so.
Common questions in Nettleden
How do I find out if my home in Nettleden is listed?
Your council is the best source, with Historic England’s list for listed buildings. A change of roofing material may need consent in either case, and councils can also use Article 4 directions.
Will you come out to Nettleden?
Yes, smaller places are covered as well as towns. Our area covers London and South East England. Just mention lanes, gates or anything else about the route when booking.
What’s in the survey report?
It sets out what we found, why it matters and what we recommend, backed by photos. Anything we couldn’t see safely is noted too.
Will you repair the leak?
No. ELD is testing only. The report shows where each breach is so your roofer can fix them.
Can you inspect my roof with a drone?
Yes, where it’s 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.
Do you test for asbestos?
No. Asbestos surveys and testing aren’t part of what we do. If we see materials that could contain asbestos, such as cement roof sheets or soffits on buildings from before 2000, we flag them and suggest a specialist asbestos surveyor checks them before any work.
Can every flat roof be tested?
It depends on the membrane and the build-up. Share any details you have and we will check whether ELD will work.
Flat roofs in Nettleden
Older houses in the South East frequently have slate or clay tile roofs, while many later estates have concrete tiles. Mixed in with those pitched roofs are lots of flat ones, over rear extensions, dormers, garages and shops. An older home may be listed, or stand in a conservation area. To find out, check Historic England’s list and ask the council about conservation areas. In either case, a change of roofing material may need consent.
If your house is among the older ones in the streets near Church of St Lawrence, the flat roofs on later extensions tend to wear out long before the main roof. If you own a rental within reach of Berkhamsted station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Nettleden is about 3 miles north-east of Berkhamsted, in Hertfordshire. We survey roofs in Nettleden and the rest of Hertfordshire, as part of our work across London and South East England. Our Hertfordshire coverage includes Nettleden. You can also see our page for Milton Keynes.
Here we cover the HP1 postcode area for electronic leak detection. Close by, we survey roofs in Frithsden (1 mile south-west), Great Gaddesden (1 mile north-east), Potten End (1 mile south), Fields End (2 miles south) and Ashridge (2 miles north-west). We also work in nearby towns such as Watford (10 miles south-east), Hemel Hempstead (3 miles south-east), St Albans (9 miles east), Welwyn Garden City (14 miles east), Harpenden (8 miles east) and Hatfield (12 miles east).
What’s near Nettleden
Around Nettleden, our work takes us to homes and buildings near John F Kennedy Catholic School. For rail, the closest station is Berkhamsted station, roughly 2.2 miles south-west. Nearby you will also find Hemel Hempstead Hospital (3.1 miles south-east). For a walk, there’s Long Deans.