Greater London · London and the South East
Crook Log Electronic Leak Detection
Find out the condition of the flat roof membrane at your property in Crook Log from an independent roof surveyor. Visits run on weekdays and weekends, in the daytime.
- Water coming in under a flat roof
- New roofs to check before paving or planting
- Leaking laps in the waterproofing
About our electronic leak detection in Crook Log
There are different ELD methods. Low-voltage methods normally need a wet roof surface, while high-voltage testing needs a dry, exposed membrane. The right method depends on the membrane and the build-up of the roof and we explain which we will use. If neither method suits your roof, we’ll tell you at the outset. If you’ve noticed leaks at pipes, outlets or fixings and waterproofing to test before it’s covered, we can find out what’s behind it, on liquid-applied waterproofing, green roofs and flat roof membranes alike.
Across London, flat roofs are everywhere, from back additions and dormers to roof terraces, blocks of flats and offices. Coverings range from felt and asphalt to EPDM rubber, GRP fibreglass and single-ply membranes, and each fails in its own way. Which one is on a roof in Crook Log shapes how it is checked. Many older flat roofs are felt or asphalt, and many newer ones EPDM rubber or GRP.
Every survey ends with a written report, with photographs, sent by email. It explains the condition of the flat roof membrane, the defects we found and what we recommend.
- Location
- Crook Log (DA7, DA6, DA16)
- Region
- Greater London
- Cost
- Quoted for your roof
- Report
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Page updated
- 27 October 2026
Honest limits
We only report whatever is safely visible on the day, so there are some things a survey can’t cover:
- Carrying out the repair work
- Build-ups without a suitable layer below
- Areas we cannot reach or that can’t be tested
Not sure which survey suits your roof? You can ring 07833 053749 or email us and we’ll tell you before you book. What a survey covers and does not.
Roofs we survey in Crook Log
- Commercial flat roofs
- Flat roof membranes
- Roof terraces and balconies
- Liquid-applied waterproofing
- Single-ply roofs
- Green roofs
How it works
You do not need to do much on the day. Point out anything you’ve noticed, such as stains, drips or loose pieces, and we will take it from there. The survey itself takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. In a London conversion, the way into the loft space is frequently from a communal landing or the top flat. If that applies to your building, it is useful to agree access with the neighbours or the managing agent first. Everything else is planned around the building, not the postcode.
- First, we confirm which roof areas are included.
- We get the roof ready for testing.
- We work across the roof with the test equipment.
- Each breach found is located and recorded.
- You receive the results to pass to your roofer.
Before we arrive
- Leave a clear route to the loft
- Show us where any leaks or stains appear
- Let us know about parking near the property
Arrange a survey
Most bookings start with a short call: call 07833 053749 or use the contact form and we will ask a few questions about the roof. You’ll have a price before anything is arranged.
Read more
Nearby places to Crook Log
Also in Crook Log
Why it is worth a survey now in Crook Log
Testing a new membrane before it’s covered is easier than tracing a leak later. Covered roofs are harder to test. In Crook Log, as across London, an overflowing gutter soaks the wall below, which can lead to damp inside. A small blockage left for a few winters becomes a damp problem.
For a price for your roof in Crook Log, call 07833 053749 or use the contact form and tell us about the roof. We’ll confirm the figure before booking.
Why us?
- 20+ years’ experience
- Plain-English reports with photos
- Insured for professional indemnity and public liability
- Drone and thermal imaging surveys available
Read our cost guide and our case studies.
FAQs for Crook Log
Does a conservation area affect roof work in Crook Log?
We cannot confirm that for you, but Historic England’s list and your council can. Both listing and conservation areas can limit changes of roofing material, and councils can also use Article 4 directions.
Will parking be an issue for a roof survey in Crook Log?
Sometimes, yes. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well, and a driveway is even better.
How many surveys have you done?
More than 5,000 surveys over 20+ years.
Are you structural engineers?
No. We are experienced roof surveyors, and visible signs such as sagging are noted, but calculations and an engineer’s opinion are outside what we do. The report will say if you need an engineer.
Does ELD work under paving or planting?
In some cases. The layers on top and the build-up below decide it, and some may need lifting. We will discuss it before we quote.
What’s the price of ELD?
Electronic leak detection is quoted for your roof, because the method depends on the roof. The price depends on the roof’s size and build-up. For a quote, phone 07833 053749 or email us.
What’s in the survey report?
It explains what we saw, what it means and what we’d suggest, backed by photographs. Anything we couldn’t see safely is noted too.
What a survey costs
When we price a survey, we consider:
- Whether thermal imaging or a drone is needed
- The height of the building and how the roof can be seen safely
- Commercial roofs and larger buildings
- How complicated the roof is, with its valleys, chimneys and parapets
Bigger, taller and commercial roofs take more time to survey, so they’re priced to match. You will know the figure before booking.
Helping us price your survey
Here’s what helps us most when you get in touch:
- Dates you are working to, like exchange
- The property’s address and postcode
- Any marks or damp showing indoors
- What’s prompted the survey
Buyers should book once an offer has been accepted, so you have the findings in time to act on them before you exchange. For any other survey, just phone 07833 053749 or drop us an email when you’re ready.
Can I check my roof myself?
If you have a loft with safe access, take a look inside. Use a torch and stay on the joists or boards, checking for stains, damp wood or chinks of daylight.
It is useful to keep a record: dates of leaks, photos from the ground and any work done on the roof. Share it with us as you book, as it helps us focus the survey.
When to book a survey in Crook Log
Flat roof membranes can be punctured by foot traffic, dropped tools or debris. Many are tiny, but still let water through.
Common reasons to book include:
- Damage from equipment installers
- Gaps at membrane joints
- Patched roofs that still leak
- Water coming in under a flat roof
Controlled parking zones are common in London, so mention any permit rules for Crook Log.
Before you book anyone
- Is there a chance to talk the report through?
- Whether you get a written report with photos
- Which viewpoints they use to see the roof
- When you’ll get the report
Flat and commercial roofs around Crook Log
The wider area around Crook Log has a long history of building, with Red House about 0.3 miles south-east. If you own one of the older houses, expect a mix of original materials and later repairs on the roof, and the council can say whether a home is in a conservation area. In outer London, interwar semis with hipped, tiled roofs sit alongside older slate-roofed terraces. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Alongside them, flat-roofed extensions, dormers, garages and commercial units are common almost everywhere.
Shop and office owners around Broadway Shopping Centre may find that a flat roof over a business is out of sight and out of mind until it leaks. For landlords with property near Bexleyheath station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies.
Crook Log is about 3 miles south-east of Plumstead, in Greater London. In Crook Log, as across Greater London, every roof gets the same careful survey. We cover towns and villages across Greater London, large and small. We also survey roofs in London.
Postcode districts we cover here for electronic leak detection: DA7, DA6 and DA16. Whether your property is on Bean Road, Lion Road and Alers Road or anywhere close by, we can help. Neighbouring places we cover for electronic leak detection include Upton (1 mile east), Bexleyheath (1 mile east), Welling (1 mile west), Blendon (1 mile south) and Bexley (1 mile south). We also work in nearby towns such as London (10 miles west), City of Westminster (13 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
Local landmarks in Crook Log
Around Crook Log, our work takes us to homes and buildings near Danson Park, St Columba's Catholic Boys' School and The Crook Log Public House. There is a railway station in Crook Log itself: Bexleyheath station. Nearby you will also find Bexley Museum (1.7 miles south-east) and Broadway Shopping Centre (0.9 miles east). Green spaces nearby include Summer Hill and Wansunt Pit.