Greater London · London and the South East
St Mary Cray Roof Leak Investigation
Not sure what state the leaking roof is in? You can book a roof leak investigation in St Mary Cray and across Greater London.
- Wet patches high on an inside wall
- Condensation that looks like a leak
- Leaks at a dormer or roof window
How a roof leak investigation works in St Mary Cray
Older homes have more places for water to get in. Lead flashings crack or lift, valley linings wear and parapet gutters overflow when outlets block. If your home has a butterfly roof, the central valley gutter is a common culprit. Parapet walls and their gutters are looked at from wherever it is safe. The findings are recorded with photos. If you’re worried about a leak that comes and goes with the weather and damp ceilings under a flat roof, we can find out what’s behind it, whatever the roof.
In a London flat, water can travel some way before it shows, sometimes in a different flat from the one below the defect. Tracing it back matters, both for dealing with the cause and for any insurance claim. We look at what we’re given access to in St Mary Cray, inside and out. Tell us when the water shows, and in what kind of weather.
It isn’t only a list of defects. It explains what we found, why it matters and what we recommend, so you can decide what to do next.
- Location
- St Mary Cray (BR5, BR6, BR7)
- Wider area
- Greater London
- Prices
- From £150 inc. VAT
- Your report
- Written, with photos, emailed to you
- When we survey
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
When to book a survey in St Mary Cray
Slipped or missing slates and tiles let rain reach the underlay. Ageing felt underlay eventually tears and lets water through, while some very old roofs have nothing under the coverings. Corroded nails, known as ‘nail fatigue’, are a frequent cause on slate roofs.
These are some of the problems a survey can pick up:
- Damp underlay across a wide area
- Water dripping from rafters or underlay
- Damp on a chimney breast
- Damp walls below an overflowing gutter
Trees in and around Jubilee Country Park shed leaves that can end up in nearby gutters.
Choosing a roof surveyor
- How they plan to inspect the roof safely
- Their report turnaround times
- Will they check the loft as well as the outside?
- What exactly goes into their report
When you need someone else
This isn’t a RICS building survey, a structural engineer’s report or an asbestos survey. It also has these limits:
- Leaks that only appear in weather we can’t recreate
- Leaks from plumbing, tanks or pipework rather than the roof
- Putting the leak right
Not sure which survey suits your roof? You can phone 07833 053749 or email us and we will tell you. What our survey covers.
What we look at
- Lead flashings
- Slate and tile slopes
- Flat roof details
- The roof space
- Rooflights and dormers
- Chimney stacks
- Valleys and parapet gutters
Landlords, agents and block managers in St Mary Cray
Letting agents can arrange access with tenants, at a time agreed ahead of time. We survey on any day of the week, which can make access easier.
Where a roof is shared: access has to be agreed with whoever owns or manages the building. Mention it when you contact us and we’ll plan the visit with that in mind.
FAQs for St Mary Cray
Does a conservation area affect roof work in St Mary Cray?
We can’t confirm that for you, but Historic England’s list and your council can. Both listing and conservation areas can limit changes of roofing material.
Will parking be an issue for a roof survey in St Mary Cray?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
How quickly is the report sent?
Each package has its own report time. Basic is within 48 hours, Standard is 24–48 hours and Premium is the same day. Mention any deadline when you book.
Is there anything I need to do before the visit?
Check the loft can be reached. Gather any photos and notes about when it leaks, plus details of past repairs. Keep catching drips and keep water away from electrics.
Do you survey on Saturdays and Sundays?
Surveys can be booked for any day of the week: Monday to Friday, Saturdays and Sundays. Let us know which days suit you as you book.
How do I arrange a roof leak investigation in St Mary Cray?
It is easiest to phone 07833 053749 or send us an email. Let us know the address and a little about the roof, and we will take it from there. Surveys run on any day of the week.
Will you fly a drone over my roof?
Where it helps and the rules allow, yes. 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.
Why get it checked now?
If a leak has been ‘fixed’ before and has come back, the cause was probably missed. A careful investigation looks at every likely route, not just the obvious one. It gives the next repair a far better chance. Blocked gutters and hoppers on London houses overflow and soak brickwork, which can lead to damp inside. A blocked outlet ignored for a winter or two can mean damp walls inside.
A Basic Survey starts from £150, inc. VAT. The Standard Survey starts from £250 and the Premium Survey from £400, both inc. VAT. We confirm the price for your roof before you book.
What you get with us
- Clear package prices, with VAT included
- Photos and a written report every time
- 98% of customers satisfied
- An independent look at the roof
Read what a roof survey costs or our case studies.
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 record our findings for the written report. Most visits take about one to two hours at a typical home, and longer for a large or complex roof. For a visit in St Mary Cray, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor the property is on and how to get into the loft. We then look at everything that’s safely in view from ground level, windows, the loft and, where it is safe, the roof itself.
- You tell us where the water appears, when, and what the weather was doing.
- Inside, we look at the stain and the ceiling around it.
- From the roof space, we trace the water’s route where there’s safe access.
- We inspect the likely entry points outside, from the ground, windows and the roof where safe.
- You receive a report with the likely source, photos and recommendations.
Getting ready for the survey
- Keep pets in another room
- Have keys ready for side gates, garages or roof access doors
- Note where any stains or damp appear
Book a survey
Unsure which package suits your roof? The easiest way is to phone 07833 053749 or send us an email and describe the roof and what’s worrying you. We will explain the options and the price.
Related advice
Roof leak investigations in St Mary Cray: local notes
Outer London has plenty of Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, often with hipped roofs in clay or concrete tiles. Hips, bay roofs and later loft conversions are typical of those semis, if your home is one of them. The covering and its details give the first clues when tracing where water is coming from. About 3.8 miles west lies Bromley Palace, a reminder of how long the area around St Mary Cray has been built on. Older roofs in the wider area can hide decades of patch repairs, so the detail matters.
For an older house near a landmark such as Church of St Mary, the leak may come from a chimney, a valley or tired lead rather than the covering itself. If you look after a shop, office or commercial unit, for example near The Mall, water through a ceiling can damage stock and close a sales floor, so the source needs finding fast.
St Mary Cray is about 11 miles south-east of London, in Greater London. We carry out roof leak investigations in St Mary Cray for houses, flats, blocks and commercial buildings. Our area takes in places right across Greater London, large and small. We also survey roofs in London.
All of BR5, BR6 and BR7 is covered for roof leak investigations. That includes homes and businesses on New Road, Kent Road and Park Road. Being close to the A224, St Mary Cray is simple for us to get to for roof leak investigations. If you are just outside St Mary Cray, we cover Poverest (1 mile south-west), St Paul's Cray (1 mile north), Orpington (1 mile south), Derry Downs (1 mile south-east) and Kevington (1 mile east). Larger places within reach include London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (15 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north-west).
Near you in St Mary Cray
Locally, jobs take us to homes and businesses close to Harris Academy Orpington, The Blue Anchor Public House and Walsingham School, among other places. There’s a railway station in St Mary Cray itself: St Mary Cray station. A little further out are London Borough of Bromley Museum (0.9 miles south) and Lullingstone Castle (4.5 miles south-east). Green spaces nearby include Summer Hill and The Warren.
Places near St Mary Cray
Other services in St Mary Cray
Useful tips for St Mary Cray property owners
There is plenty you can do without going near the roof. Here’s what helps most:
- Keep water away from lights and sockets
- Record whether it leaks in every downpour or only some
- Move stored items away from the hatch
- Don’t climb onto the roof to look
Keep the report after the work is done. If water appears again, it shows what was found before.
Check the loft after heavy rain, with care and a good torch. Watch for water marks, wet underlay and damp wood. Photograph anything new.