Essex · London and the South East
Electronic Leak Detection in Theydon Bois
An experienced roof surveyor for electronic leak detection in Theydon Bois. More than 20 years and over 5,000 surveys.
- Water coming in under a flat roof
- Damp inside with no sign on the roof
- Repairs that haven’t stopped the leak
Electronic leak detection in Theydon Bois: local notes
About 2.3 miles east lies Hill Hall, a reminder of how long the area around Theydon Bois has been built on. 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 buildings in Essex often have clay tiles and weatherboarding, and lots of post-war and modern estates besides. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
If you live in an older home near Parish Church of St Mary, the flat roofs on later extensions tend to wear out long before the main roof. Anyone responsible for a site like Theydon Bois Primary School will know that schools and public buildings often have big flat roofs, and their outlets and upstands need regular checks. For landlords with property near Chingford station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Theydon Bois is about 2 miles north-east of Loughton, in Essex. We survey roofs in Theydon Bois and the rest of Essex, as part of our work across London and the South East. Across Essex, we cover Theydon Bois and the places around it. We also survey roofs in London.
We cover every part of the CM16 postcode area for electronic leak detection and the streets around it. You’ll find streets such as Buxton Road, Orchard Drive and Elizabeth Drive. Theydon Bois is on the B172, which makes it straightforward to reach. Other places close to Theydon Bois include Debden Green (1 mile south-west), Debden (2 miles south), Loughton (2 miles south-west), Upshire (3 miles north-west) and High Beech (3 miles west). Further out, we also cover Harlow (7 miles north), Brentwood (9 miles east), Billericay (14 miles east), Harold Wood (8 miles south-east), Laindon (15 miles south-east) and Buckhurst Hill (4 miles south-west).
Landmarks near Theydon Bois
In Theydon Bois, that means homes and buildings near Queen Victoria Public House and Davenant Foundation School. For rail, the closest station is Chingford station, roughly 4.7 miles south-west. Nearby you will also find St. Margaret's Hospital (2.5 miles north-east) and Epping Signalling Museum (1.6 miles north-east). Open spaces near Theydon Bois include Lippitts Hill and Home Mead.
How electronic leak detection works in Theydon Bois
Not every flat roof suits electronic testing. Certain membranes conduct electricity and some roofs do not have a suitable layer beneath the membrane. If your roof isn’t suitable, we will tell you at the start. Telling us what you know about the roof’s membrane and layers helps, including drawings, specifications or the roofer’s paperwork. It avoids arranging a test that can’t give results. We survey green roofs, single-ply roofs and flat roof membranes, and the problems we are asked to look at most are leaking laps in the waterproofing and holes left by work on the roof.
In smaller places like Theydon Bois, flat roofs are mostly on extensions, garages, porches and dormers. Even a small flat roof can let plenty of water into the room below. Knowing the covering and how it was laid tells you what to expect from it, from felt and asphalt to EPDM rubber and GRP. From an upstairs window, look for standing water, splits and edges coming away.
We keep jargon out of it: where something needs attention, it says so plainly, along with how urgent it is.
- Where
- Theydon Bois (CM16)
- Wider area
- Essex
- Cost
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- Appointments
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Page updated
- 27 October 2026
Also near Theydon Bois
What else we do in Theydon Bois
Tips from our surveys
A survey works best with a little help from you, before and after. Some tips:
- Do not keep patching the same spot
- Act on new leaks promptly
- Use boards when working on the roof
- Have roof specifications to hand
Where the evidence points to walls, copings or rooflights, we will note it, so other causes can be checked.
Keep people off the flat roof unless they need to be there. Many breaches come from foot traffic.
What electronic leak detection doesn’t cover
Our findings are based on what we can see safely on the day, so some things are outside what a survey can do:
- Carrying out the repair work
- How wet the insulation is
- Leaks from walls, copings or rooflights
If in doubt, ring 07833 053749 or email us and we’ll point you to the right survey. The full list of what we check.
What we check
- Flat roof membranes
- Green roofs
- Roof terraces and balconies
- Liquid-applied waterproofing
- Single-ply roofs
- Commercial flat roofs
Surveys for landlords and agents in Theydon Bois
With a portfolio of properties, surveys can be booked for more than one address. To arrange surveys for several addresses, call 07833 053749 or drop us an email with the addresses.
Roof problems in a rented home affect tenants as well as the building. A survey shows what needs attention, so you can plan the work with less disruption.
Can I check my roof myself?
A lot can be seen from the ground. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Never climb onto the roof to look.
What you can’t do safely is get up close. Roofs are fragile and slippery. That part is for a survey.
Roof by roof
Single-ply membranes
ELD frequently works on single-ply membranes but it depends on the product and layers.
Bituminous membranes
Older felt roofs often have seams and patches that can leak. Testing depends on the roof.
FAQs for Theydon Bois
Is my home in Theydon Bois listed or in a conservation area?
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.
Do you cover Theydon Bois?
Yes, Theydon Bois is one of the places we work. The survey and report are the same in Theydon Bois as anywhere else.
Does ELD include fixing the breach?
No. ELD is testing only. You get the breach locations with photos so your roofer can fix them.
Do I need to be at home?
If the survey includes the loft or the inside of the building, someone needs to let us in. We’ll talk about access when you book.
Which days do you carry out surveys?
We survey seven days a week: Monday to Friday, Saturdays and Sundays. Just tell us the days that suit you.
Is my roof suitable for ELD?
That depends on the roof’s membrane and layers. Share any details you have and we will check whether ELD will work.
Can you survey a shared roof?
Yes. Shared roofs just need a little more planning. Tell us about it when booking and we’ll plan the survey around it.
What we do, step by step
A survey visit follows a simple order: we hear what you’ve seen, look at the roof from every safe viewpoint, photograph what we find and make notes for the report. It normally takes a time that depends on the membrane area and the build-up, and we’ll give you a guide when quoting. With a bit of garden around a house, as there often is around Theydon Bois, the roof can be viewed from several angles. Mention any side of the property we cannot get to. The loft, where there is safe access, completes the picture.
- We ask about the roof, its age, its membrane and where leaks appear inside.
- The roof is assessed to see if electronic testing will work on it.
- The testing method is chosen to suit the membrane and build-up.
- The roof is tested and any breaches are located.
- The breaches are recorded with photographs in a report for your roofer.
Before we arrive
- Show us where any leaks or stains appear
- Let us know where we can park nearby
- Have any questions written down, so nothing gets missed
How to book
A quick phone call is normally the easiest start: ring 07833 053749 or drop us an email and we will ask a few questions about the roof. You’ll have a price before anything is arranged.