Greater London · London and the South East
Roof leak investigation in Coulsdon, Greater London
Independent roof leak investigations in Coulsdon. We’ve completed more than 5,000 surveys across London and the South East.
- Staining where a gutter or parapet meets the wall
- Wet patches on loft insulation
- Ceiling stains that grow after rain
What affects the cost of roof leak investigations
What a survey costs depends on the time and equipment it needs. The main factors are:
- Whether it’s a home or a commercial building
- The use of thermal imaging or a drone
- The package you choose: Basic, Standard or Premium
- How complicated the roof is, with its valleys, chimneys and parapets
Our price is from £150, including VAT. Packages run from Basic at £150 through Standard at £250 to Premium at £400, including VAT.
What we need to know
What helps most when you contact us:
- Any deadline, like an exchange date
- Access details, like a loft hatch or a shared roof
- The type of building and roof, such as pitched or flat
- Where any leaks, stains or damp patches show inside
Not sure which survey you need? The easiest way is to phone 07833 053749 or use the contact form and describe the roof and what’s worrying you. We’ll explain the options and the price.
How a roof leak investigation works in Coulsdon
We use moisture detection and thermal imaging where they help. Moisture readings show which materials are wet. Thermal imaging shows temperature differences that can point to wet areas, not water itself, so its findings are checked with moisture readings. Thermal imaging is part of the Premium Survey, and moisture detection comes with Standard. The best thermal results come after a sunny day, with a dry roof and little wind. We survey chimney stacks, lead flashings and slate and tile slopes, and common reasons people get in touch are water dripping from rafters or underlay and a leak that comes and goes with the weather.
In a London flat, water can travel some way before it shows, sometimes in a different flat from the one below the defect. That makes the source hard to pin down, and finding it matters for whoever has to deal with it. We look at what we’re given access to in Coulsdon, inside and out. It helps to know when the water appears and in what weather.
The report doesn’t just list problems. It explains what we found, why it matters and what we recommend, so you can decide what to do next.
- Where
- Coulsdon (CR5, CR8, CR3)
- Region
- Greater London
- Prices
- From £150 inc. VAT
- Reports
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Practical tips
Nothing here needs a ladder. A few suggestions:
- Tell us if there are tanks or pipes in the loft
- Keep water away from lights and sockets
- Leave roof access to professionals
- Let us know about any past repairs to the roof
Standard includes a follow-up consultation to talk the findings through, and Premium includes an in-person consultation. It is a chance to ask about anything in the report.
After a downpour, look in the roof space with a torch, keeping to boarded areas. Look for drips, damp patches and stains on timbers. Take photos of anything that changes.
Also near Coulsdon
More services for Coulsdon
Roof leak investigations around Coulsdon
Alongside Victorian and Edwardian terraces, outer London has a great many interwar semis, frequently 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. The covering and its details give the first clues when tracing where water is coming from. With Nonsuch Mansion about 4.9 miles north-west, Coulsdon sits in an area with a long building history. If you own one of the older houses, expect a mix of original materials and later repairs on the roof.
As a London address, Coulsdon can be tricky for parking: let us know about parking bays, permits or a driveway as you book. For landlords with property near Coulsdon South station, a clear finding on where water gets in helps you brief a roofer straight away.
Coulsdon is about 13 miles south of London, in Greater London. We cover Coulsdon and the rest of Greater London. Our area takes in places right across Greater London, large and small. We also survey roofs in London.
Every address in CR5, CR8 and CR3 is within our area for roof leak investigations. You’ll find streets such as Hadleigh Grove, Farthing Way and Dobson Close. Being close to the B276 and B2030, Coulsdon is easy for us to reach. Other places close to Coulsdon include Woodcote (1 mile north), Old Coulsdon (1 mile south-east), Woodmansterne (1 mile west), Chipstead (1 mile south-west) and Purley (2 miles north-east). Within a short drive, we also cover London (13 miles north), City of Westminster (14 miles north), Marylebone (14 miles north), Kensington (13 miles north), St Pancras (15 miles north) and Shoreditch (15 miles north).
Near you in Coulsdon
Locally, jobs take us to homes and businesses close to Dollypers Hill, Coulsdon Sixth Form College and The Pembroke pub. Coulsdon has its own railway station: Coulsdon South station. Other landmarks nearby include Croydon Airport Visitor Centre (3 miles north) and Purley War Memorial Hospital (2 miles north-east). Open spaces near Coulsdon include Duppas Hill and Mercers Lake.
What we are asked to look at in Coulsdon
Slipped or missing slates and tiles let rain reach the underlay. Old bitumen felt may cope for a while, but it tears and sags with age, while some very old roofs have nothing under the coverings. On slate roofs, slipping is often caused by corroded nails.
Typical things we’re asked to look at include:
- Stains around a skylight
- Leaks that appear only in driving rain
- Damp walls below an overflowing gutter
- Ceiling stains that grow after rain
If you live in an older home near St Andrew's Church, water on an older roof tends to find its way in at the lead, the valleys or the chimney.
What to check before booking
- Their track record with similar roofs
- What the survey will not cover
- Will the report include photos?
- What insurance they carry
Your questions about roof leak investigations in Coulsdon
Can parking be tricky for a visit in Coulsdon?
Sometimes, yes. If Coulsdon has controlled parking where you are, a visitor permit is the easiest answer.
Do you carry out roof surveys in Coulsdon?
Yes. We cover the whole of London and South East England, and Coulsdon is part of that. Just call 07833 053749 or use the contact form and let us know about the property.
Why is the stain in a different place from the leak?
Because water travels. It runs along rafters, battens or underlay before it drips, so the stain may be some distance from where it gets in. That is why we trace the route rather than patching above the stain.
How long does the visit take?
On site, it normally takes between one and two hours on an ordinary house, though large, tall or awkward roofs take more time. Report times depend on the package.
How do you tell a leak from condensation?
The two can look alike. Widespread damp on the underside of the roof in cold weather, with blocked vents, suggests condensation. We look at the pattern, take moisture readings and tell you which is more likely.
What’s the best way to book?
Just call 07833 053749 or use the contact form. We’ll ask a few questions, confirm the price and agree a date, weekday or weekend.
When does the report arrive?
Report times are set by the package. Basic: within 48 hours. Standard: 24 to 48 hours. Premium: the same day. If you have a deadline, like an exchange date, tell us as you book.
The survey, step by step
Safety comes first on every visit. Everything that can safely be seen is inspected, and if part of the roof can’t be seen, the report says so. Most visits take roughly 1–2 hours for a house, and longer for a large or complex roof. London terraces rarely offer a view of the whole roof from one spot, so in Coulsdon we work round the house, using the street, the windows, the loft and any safe vantage point behind it. Shared stairs or a basement flat? Let us know who holds the keys.
- We help you choose the package that suits the leak.
- We agree a date, including weekends.
- We inspect inside and out, starting from the stain.
- Moisture detection and thermal imaging are used where your package includes them and they help.
- You get photos, the likely cause and clear recommendations.
Before the survey
- Have any questions written down, so nothing gets missed
- Agree roof access with the managing agent if it’s shared
- Find any records of previous roof work
How to book
You can call us seven days a week. To book or ask a question, phone 07833 053749 or drop us an email.
Related advice
Rented homes, blocks and businesses
Shared roofs need a little more planning: we need access agreed with the building owner or managing agent. Mention it when you contact us and we’ll plan the survey around it.
Letting agents frequently book on a landlord’s behalf. Access is agreed with the tenant in advance.
What this survey cannot tell you
This isn’t a RICS building survey, a structural engineer’s report or an asbestos survey. Other limits to bear in mind:
- Plumbing leaks that look like roof leaks
- Defects hidden under coverings or inside walls without opening up
- A promise to find every leak on a single visit
If in doubt, phone 07833 053749 or drop us an email and we’ll suggest the right survey before booking. The full list of what we check.
Roofs we survey in Coulsdon
- Valleys and parapet gutters
- The roof space
- Lead flashings
- Rooflights and dormers
- Slate and tile slopes
- Chimney stacks
- Flat roof details