Greater London · London and the South East
Roof Leak Investigation in St Paul's Cray
Find out what’s going on with the leaking roof before you decide what to do next. We carry out roof leak investigations in St Paul's Cray, with photographs and a clear written report.
- Condensation that looks like a leak
- Leaks below a flat extension roof
- Water that shows only in certain storms
About our roof leak investigation in St Paul's Cray
Most roof leaks start at a joint rather than the middle of a slope. Flashings at chimneys and walls, valleys, gutters, parapets and flat roof upstands and outlets are the usual suspects. We check each likely route and we follow where the evidence leads. Every chimney, dormer and roof light adds more joints to check. Each one is checked from wherever it’s safe to see it. We survey chimney stacks, rooflights and dormers and flat roof details, and the problems we’re asked to look at most are wet patches high on an inside wall and leaks at a dormer or roof window.
London’s Victorian and Edwardian roofs have frequently been repaired many times, so a new leak can be the latest sign of wear rather than a single event. Insurers normally exclude wear and tear, so it is useful to know whether damage is old or new. A careful look in St Paul's Cray tells the two apart where the evidence allows. A written record with photos helps you explain what was found to whoever deals with it next.
With the Standard Survey, you also get moisture detection, a structural check and a follow-up consultation. The Premium Survey goes further, with thermal imaging, drone inspection where it applies, structural analysis and an in-person consultation.
- Place
- St Paul's Cray (BR5, BR7)
- Wider area
- Greater London
- Prices
- From £150 inc. VAT
- Report
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
What this survey can’t tell you
A survey is a careful look at the leaking roof, but it can’t do everything. Its limits include:
- Carrying out the fix
- Faults hidden behind ceilings or boarding
- A promise to find every leak on a single visit
Not sure which survey suits your roof? You can call 07833 053749 or email us and we will tell you. What a survey covers and does not.
What this survey covers
- Flat roof details
- Slate and tile slopes
- Valleys and parapet gutters
- Rooflights and dormers
- Lead flashings
- Chimney stacks
- The roof space
For landlords and managing agents
Letting agents can arrange access with tenants. We survey on weekdays, Saturdays and Sundays, which helps when tenants work during the week.
Buyers’ agents can book surveys on behalf of their clients. The report is emailed, so it can go straight to your client, photos included.
Practical tips
From years of surveys, a few habits stand out:
- Keep a photo record of the damp patch
- Make sure the loft is accessible
- Note the weather when the leak shows
- Leave roof access to professionals
If the leak turns out to be condensation, the report says so, and suggest how the loft space could be better ventilated. It saves chasing a leak that isn’t there.
Keep the roof space ventilated. Good airflow reduces condensation, and condensation is a common false alarm. Check insulation doesn’t block airflow at the eaves.
Leaks and storm damage in St Paul's Cray
Alongside Victorian and Edwardian terraces, outer London has a great many interwar semis, often with hipped roofs of clay or concrete tiles. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Where water gets in depends a good deal on what the roof is made of and how it’s detailed. About 3.7 miles west lies Bromley Palace, a reminder of how long the area around St Paul's Cray has been built on. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and the council can say whether a home is in a conservation area.
If you run a business near The Mall, a leak can close part of a shop or office, so finding the cause quickly matters. Homes near green spaces such as Chislehurst Common can get more leaves in their gutters in autumn, and blocked gutters overflow and soak walls. Take a building like Leesons Primary School: on a building that size, finding the source of a drip means looking well beyond the stain.
St Paul's Cray is about 1 mile north of Orpington, in Greater London. We provide roof leak investigations for homeowners, landlords and businesses in St Paul's Cray. St Paul's Cray is one of the places in Greater London we cover for roof leak investigations. Our London page covers surveys nearby.
Surveys in BR5 and BR7 are booked the same way as anywhere else. Whether your property is on Main Road, Murray Road and Rushet Road or a nearby road, we can help. We also cover St Mary Cray (1 mile south), Poverest (1 mile south), Derry Downs (1 mile south), Orpington (1 mile south) and Kevington (2 miles south-east). Within a short drive, we also cover 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).
What’s near St Paul's Cray
Around St Paul's Cray, our work takes us to homes and buildings near Kemnal Technology College, The Blue Anchor Public House and Walsingham School, among other places. St Paul's Cray has its own railway station: St Mary Cray station. Nearby you’ll also find Lullingstone Castle (4.8 miles south-east) and London Borough of Bromley Museum (1.5 miles south). Open spaces near St Paul's Cray include The Warren and Summer Hill.
Your questions about roof leak investigations in St Paul's Cray
Will parking be an issue for a roof survey in St Paul's Cray?
It depends on the street. If St Paul's Cray 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 St Paul's Cray?
For listing, use Historic England’s list; for conservation areas, ask the council. It matters most if you are planning to re-roof in a different material.
What do I do with the report?
You will get the report by email, with photos and clear recommendations. With Standard there’s a follow-up consultation; with Premium, an in-person consultation, so you can talk the findings through.
Do you use thermal imaging to find leaks?
Where conditions suit, it can. It works best after a sunny day, with a dry roof surface and little wind. Wet insulation holds heat longer than dry, which can show up on the image. Its findings are confirmed with a moisture check.
How soon will I get the report?
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.
What will the report tell me?
A written report with photos, explaining the condition of the leaking roof, any defects and our recommendations. The Standard Survey adds moisture detection and a structural check, and the Premium Survey adds thermal imaging, drone inspection where applicable and structural analysis.
Can you trace a leak in dry weather?
Normally, yes. Moisture detection shows where materials are damp even on a dry day. If a leak only appears in driving rain from one direction, we will tell you what we found and what’s most likely.
What you can safely check yourself
After heavy rain, check ceilings and the tops of walls for new stains. Photograph them and note the date, which helps when we look at the roof.
A lot can be seen from ground level. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Please do not climb up for a closer look.
Nearby places to St Paul's Cray
Other services in St Paul's Cray
What happens on the day
Once we’ve finished looking, we write up our findings as a report with photos, sent to you by email. On timing, it typically takes about 1–2 hours at a typical home, while a commercial roof takes nearer three to four hours. In St Paul's Cray, visits are available on weekdays and at weekends. It helps if you can point us to a visitor permit or a nearby bay, and to clear a path to the loft hatch. Upstairs rooms at the back are useful too, as they frequently give the best view of a rear addition.
- We start with what you’ve seen: where the stain is and when it gets worse.
- The visit starts indoors, at the stain and in the loft.
- Likely entry points outside are looked at, from flashings and valleys to gutters and outlets.
- Where it helps, we take moisture readings and use thermal imaging.
- We email a report with photographs, the likely entry point and recommendations.
Before the survey
- Make a note of anything you’d like us to look at
- Find any records of previous roof work
- Mention any parking restrictions on your street
Getting a price
Most bookings start with a short call: phone 07833 053749 or email us and we will ask a few questions about the roof. The price is agreed before a date is set.
Related advice
What we look for on each type of roof
Lead flashings
Some roofs have mortar where you’d expect lead. Fillets crack and pull away over time, and water runs down behind them.
Parapet and box gutters
Some older terraces have a butterfly roof with a valley gutter in the middle. Problems there often show in the rooms on the top floor.