Essex · London and the South East
Theydon Garnon Electronic Leak Detection
Not sure what state the flat roof membrane is in? We carry out electronic leak detection in Theydon Garnon and across Essex, with plain-English findings.
- Leaks that return after repairs
- New roofs to check before paving or planting
- Holes around roof penetrations
How electronic leak detection works in Theydon Garnon
Our ELD testing covers flat roofs in Theydon Garnon and the rest of London and South East England. Testing usually takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. Every roof is quoted on its size and build-up. The results come in a written report with photos. We survey green roofs, roof terraces and balconies and commercial flat roofs, and the problems we are asked to look at most are damp inside with no sign on the roof and gaps at membrane joints.
In a small place like Theydon Garnon, a flat roof can stand in the open, which is hard on edges, upstands and joins in the covering. 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
- Theydon Garnon (CM16)
- Wider area
- Essex
- Prices
- Quoted for your roof
- Reports
- Emailed report with photos and recommendations
- Survey days
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
For landlords and managing agents
Businesses and commercial landlords can book us too, from shops and offices to industrial units. Bigger roofs take more time, so they’re priced to suit.
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.
What affects the price in Theydon Garnon
We confirm the exact price before booking. These are the things that affect it:
- How many separate roofs there are, such as extensions, dormers and garages
- How big the roof is
- Features like valleys, chimneys, dormers and parapets
- Building height and the viewpoints available
Every price we give includes VAT. We quote electronic leak detection for each roof, as the method and time depend on the roof. We confirm the price for the job before booking.
Booking your survey
Getting the details right at the start saves time. Please include:
- Your postcode, so we can check access and travel
- Any deadline, like an exchange date
- What kind of property and roof it is
- Pictures from the garden or a window, if you have them
Most bookings start with a short call: phone 07833 053749 or use the contact form and we’ll ask a few questions about the roof. You’ll have a price before anything is arranged.
Electronic leak detection around Theydon Garnon
Older buildings in Essex often have clay tiles and weatherboarding, and lots of post-war and modern estates besides. Flat roofs on extensions, dormers, garages and business units are found alongside them almost everywhere. About 1.2 miles east lies Hill Hall, a reminder of how long the area around Theydon Garnon has been built on. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead.
For an older house near a landmark such as Church of All Saints, flat-roofed rear additions and dormers added over the years are worth checking.
Theydon Garnon is about 3 miles north-east of Loughton, in Essex. Whether the building in Theydon Garnon is a house, a flat or a commercial unit, we can survey the roof. Theydon Garnon is one of the places in Essex we cover. For surveys nearby, see our London page.
Electronic leak detection in CM16 are booked the same way as anywhere else. We also cover the places around Theydon Garnon: Hobbs Cross (1 mile east), Steward's Green (1 mile north), Fiddlers Hamlet (1 mile north), Abridge (1 mile south) and Ivy Chimneys (2 miles north-west). Further out, we also cover Harlow (7 miles north), Brentwood (8 miles east), Billericay (13 miles east), Loughton (3 miles south-west), Waltham Abbey (5 miles west) and Harold Wood (7 miles south-east).
What’s near Theydon Garnon
Around Theydon Garnon, our work takes us to homes and buildings near Davenant Foundation School and The Bull Public House. Nearby you’ll also find Epping Signalling Museum (1.6 miles north) and St. Margaret's Hospital (2.3 miles north). The countryside around Theydon Garnon includes Home Mead and Lippitts Hill.
Common questions in Theydon Garnon
Do you cover Theydon Garnon?
Yes. We survey roofs across London and South East England, and Theydon Garnon is part of that. Just ring 07833 053749 or use the contact form and tell us about the property.
Is my home in Theydon Garnon listed or in a conservation area?
We can’t confirm that for you, but Historic England’s list and your council can. A change of roofing material may need consent in either case, and councils can also use Article 4 directions.
How do I arrange electronic leak detection in Theydon Garnon?
The quickest way is to ring 07833 053749 or send us an email. Tell us the address and a little about the roof, and we’ll recommend the right survey. We survey on any day of the week.
Will you fly a drone over my roof?
Yes, where it is applicable. Our sub-250g drone is flown by a CAA-registered operator with a Flyer ID and Operator ID, and every flight depends on the airspace and the weather.
How long does electronic leak detection take?
The roof’s size and build-up decide how long it takes. You’ll know roughly how long before we start.
How much does electronic leak detection cost?
We quote electronic leak detection for each roof, as the method and time depend on the roof. Size, build-up and access all affect the price. To get a quote, call 07833 053749 or send us an email.
Is it the same as a RICS Level 2 or Level 3 survey?
No. Our survey looks at the roof, not the whole building. If you need a full building survey, you’ll need a RICS survey as well.
Places near Theydon Garnon
Other services in Theydon Garnon
Do you need electronic leak detection in Theydon Garnon?
Other trades on the roof can puncture the waterproofing. Fixings, equipment and foot traffic can leave small holes.
Signs worth acting on include:
- Waterproofing to test before it is covered
- Breaches hidden under paving or planting
- Repairs that haven’t stopped the leak
- Damage from equipment installers
Anyone responsible for a site like Theydon Bois Primary School will know that a large flat roof with plenty of outlets and rooflights has many places where a membrane can fail.
Before you book anyone
- Their track record with similar roofs
- Which limits apply to the survey
- Is there a chance to talk the report through?
- What the report includes, and whether it has photos
What happens on the day
Photographs are taken throughout the visit, so you can see in the report what we found and where. We take close-ups from wherever is safe, including by drone where it’s applicable and the weather allows. Most surveys take a length of time set by the size of the roof and how it’s built, and we’ll give you a guide when quoting. Somewhere as small as Theydon Garnon, access is often the only tricky part. Mention any outbuildings, barns or garages you want included, and anything about the roof you already know. Weekday and weekend visits are available.
- First, you let us know 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.
- The breaches are recorded with photographs in a report for your roofer.
How to prepare
- Buyers: confirm access with the estate agent or seller
- Dig out any old roof reports or invoices
- Jot down any questions you want answered
Arrange a survey
We survey roofs on any day of the week. To find a date that works for you, phone 07833 053749 or send us an email with the address and the days you’d prefer.
Related advice
Leave it or get it looked at?
ELD before paving, ballast or planting goes on is simpler. Covered roofs are harder to test. In a small place like Theydon Garnon, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
To find out what your survey will cost, ring 07833 053749 or send us an email and tell us about the roof. The price is agreed before a date is set.
What you get with us
- Drones and thermal imaging where it applies
- Surveys seven days a week
- An independent view of the roof
- Covered by professional indemnity and public liability insurance
Read what a roof survey costs or our case studies.
What this survey cannot tell you
No survey can tell you everything, and it is better to know them up front. Bear these in mind:
- Moisture spread under the membrane
- Parts of the roof covered by fixed equipment
- Some conductive membranes
If you are not sure which survey you need, phone 07833 053749 or send us an email and we will give you a straight answer. What a survey covers and does not.
What we check
- Single-ply roofs
- Liquid-applied waterproofing
- Roof terraces and balconies
- Commercial flat roofs
- Green roofs
- Flat roof membranes