Greater London · London and the South East
Electronic leak detection in Crofton Park, Greater London
Electronic leak detection to pinpoint holes in flat roof membranes for Crofton Park and the rest of Greater London. Surveys run on weekdays and at weekends.
- Leaks showing away from the breach
- Failed seams and laps
- Leaks that return after repairs
Electronic leak detection for homes and businesses in Crofton Park
ELD finds breaches in the membrane but not every way water gets in. Water coming through walls, copings, rooflights or plumbing will not show on the test. If the evidence points elsewhere, we’ll say so. The test shows breaches in the membrane, not water coming through masonry or around frames. The report makes clear what was and wasn’t tested. We’ll point you to the likely next step. Typical surveys look at leaks showing away from the breach and holes around roof penetrations, across roof terraces and balconies, green roofs and liquid-applied waterproofing.
Water getting through a flat roof in London can travel under the covering and appear some way from the hole. Outlets, upstands against parapet walls and joins with the main roof are frequent culprits. In a block or conversion in Crofton Park, the flat roof is often a shared part of the building.
The report is yours to share with whoever needs it: your solicitor, the seller, your insurer, a roofer or the building’s managing agent.
- Location
- Crofton Park (SE4, SE6, SE23)
- Wider area
- Greater London
- Price
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- When we survey
- Weekdays, Saturdays and Sundays
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Crofton Park: your questions answered
Is parking a problem for a survey in Crofton Park?
Sometimes, yes. If Crofton Park has controlled parking where you are, a visitor permit is the easiest answer, and a driveway is even better.
Does a conservation area affect roof work in Crofton Park?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
How long have you been surveying roofs?
Over 20 years and more than 5,000 surveys.
How much does electronic leak detection cost?
We quote for each roof individually. Tell us about the roof and where it leaks. Just ring 07833 053749 or send us an email for a quote.
Do you carry out surveys on Saturdays and Sundays?
We survey seven days a week: Monday to Friday, Saturdays and Sundays. Just let us know the days that suit you.
I live in a flat. Can you survey the roof?
Yes, once whoever controls the roof agrees access. We look at the parts we are given access to, and the report makes that clear.
Does someone need to be in?
Not always. If we only need the outside, we can agree that in advance, but the loft and any rooms with damp need someone to let us in.
Electronic leak detection around Crofton Park
Many homes in inner London are Victorian and Edwardian terraces, frequently with Welsh slate roofs. Many have butterfly roofs draining to a central valley gutter, with parapet walls and gutters hidden behind them. Lead flashings, party-wall upstands and shared chimney stacks are typical of these houses, if yours is one of them. Mixed in with those pitched roofs are plenty of flat ones, over rear extensions, dormers, garages and shops. Queen's House, about 2.4 miles north-east, is one of the historic houses in the wider area around Crofton Park. If your home is one of the older ones, 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.
For a London address like Crofton Park, it helps to know about controlled parking before the day, along with any off-street space. Anyone responsible for a site like Stillness Infant School will know that large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Crofton Park is about 1 mile south of New Cross, in Greater London. Crofton Park is part of the area we cover and the surrounding area as part of our work across London and South East England. We cover towns and villages across Greater London, large and small.
We cover every part of the SE4, SE6 and SE23 postcode area for electronic leak detection and the streets around it. We cover properties on Ivy Road, Nash Road and Lindal Road and the roads around them. Other places close to Crofton Park include Brockley (1 mile north-west), Ladywell (1 mile east), Honor Oak (1 mile west), Forest Hill (1 mile south-west) and Nunhead (1 mile north-west). We also work in nearby towns such as London (4 miles north-west), City of Westminster (7 miles north-west), Marylebone (7 miles north-west), Kensington (8 miles north-west), St Pancras (6 miles north-west) and Shoreditch (5 miles north).
What’s near Crofton Park
Locally, jobs take us to homes and businesses close to Blythe Hill Tavern, Prendergast Ladywell School and Blythe Hill Fields. There is a railway station in Crofton Park itself: Crofton Park station. A little further out are University Hospital Lewisham (0.7 miles east) and Horniman Museum and Gardens (1.4 miles south-west). For a walk, there is One Tree Hill and Knight's Hill.
The survey, step by step
The aim of the visit is simple: to see as much of the flat roof membrane as can safely be seen and record it clearly. Everything we note and photograph goes into the written report. It typically takes a time that depends on the membrane area and the build-up, which we set out in the quote. In Crofton Park, as in much of London, lots of properties are flats or terraces without side access, so the back of the roof is often seen from upstairs windows, from inside or, where a flight is allowed, from the air. If the building has a managing agent or access rules, let us know when you book.
- We agree the area to be tested.
- The surface is prepared for the chosen method.
- Testing runs across the agreed area.
- We mark the breach locations in our records.
- The report is sent for your roofer to act on.
Before the survey
- If you’re buying, check with the agent that we can get in
- Keep pets inside or away from the areas we are looking at
- Have any paperwork from past roof work to hand
Booking a survey
We confirm the exact price before booking, so you know the cost up front. Electronic leak detection is quoted for your roof, because the method depends on the roof. To book, call 07833 053749 or send us an email.
Read more
What this survey can’t tell you
A survey is a careful look at the flat roof membrane, but it can’t do everything. The main limits are:
- Areas we can’t reach or that cannot be tested
- Carrying out the repair work
- Roofs whose membrane or build-up isn’t suitable
If in doubt, ring 07833 053749 or use the contact form and we will suggest the right survey before you book. The full list of what we check.
What we look at
- Green roofs
- Liquid-applied waterproofing
- Roof terraces and balconies
- Commercial flat roofs
- Flat roof membranes
- Single-ply roofs
Places near Crofton Park
What else we do in Crofton Park
What affects the cost of electronic leak detection
To price your survey, we look at:
- House, block, shop or office
- Features like valleys, chimneys, dormers and parapets
- How tall the building is and how easy the roof is to see
- How many separate roofs there are, such as extensions, dormers and garages
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. You’ll know the figure before booking.
What we need to know
The more you tell us, the easier it is to price the survey. When you contact us, tell us:
- Access details, such as a loft hatch or a shared roof
- Photos of the roof, taken safely from ground level or a window
- Where the property is, with the postcode
- The reason for the survey, such as buying, a leak or storm damage
Our phone lines are open seven days a week. To book or ask a question, phone 07833 053749 or use the contact form.
Should I look at the roof myself first?
During heavy rain, look at the gutters from the ground or a window. Overflowing water can point to a blockage or a sagging run.
Fresh stains on ceilings or walls after rain are worth noting. Photograph them and note the date, as it helps a surveyor trace the cause.
When to book a survey in Crofton Park
If a flat roof keeps leaking after patching, the hole may be elsewhere. ELD can locate the breach more precisely.
Signs worth acting on include:
- New membranes needing a check before handover
- Holes left by work on the roof
- Leaks through a flat roof with no obvious cause
- Breaches around outlets and penetrations
Shop and office owners around Lewisham Shopping Centre may find that flat roofs over shops and units are easy to forget until water comes through a ceiling.
Questions to ask before booking
- Whether you get a written report with photos
- When you will get the report
- Their insurance cover
- Whether the roof space is looked at, where there is one
Different roofs, different checks
Bituminous membranes
Bituminous felt and modified bitumen membranes are common. The build-up decides which method will work.
Single-ply membranes
Single-ply membranes are common on commercial and newer roofs. Laps and fixings are where holes often appear.