Greater London · London and the South East
Clapham Junction Roof Leak Investigation
Not sure what state the leaking roof is in? You can book a roof leak investigation in Clapham Junction and across Greater London, with plain-English findings.
- Condensation that looks like a leak
- Water through the ceiling under a flat roof
- Staining around the chimney inside
Roof leak investigation in Clapham Junction: what you get
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. Each of these is checked in turn and follow the evidence. 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 valleys and parapet gutters, rooflights and dormers and lead flashings, and common reasons people get in touch are stains around a skylight and water dripping from rafters or underlay.
London’s Victorian and Edwardian roofs have often been repaired many times. Telling wear from a one-off event matters, because insurers normally exclude wear and tear. A careful look in Clapham Junction tells the two apart where the evidence allows. A written record with photographs helps you explain what was found to whoever deals with it next.
How fast the report arrives depends on the package: the Basic Survey within 48 hours, the Standard Survey in 24 to 48 hours and the Premium Survey on the same day.
- Place
- Clapham Junction (SW11, SW18, SW4)
- Region
- Greater London
- Cost
- From £150 inc. VAT
- Report
- A written report with photos, by email
- Appointments
- Weekdays, Saturdays and Sundays
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
Checking the roof from ground level
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 don’t climb up for a closer look.
A DIY look is useful, but it isn’t a survey. From the ground, valleys, flashings and the backs of chimneys are often out of sight.
What we do, step by step
We photograph the roof as we go, so the report shows exactly what we saw. Close-ups come from the safest viewpoint available, including by drone where it’s applicable and the weather allows. Most surveys take between one and two hours, more where the leak is intermittent or the roof is large. In converted houses and mansion blocks, the loft hatch is frequently on a shared landing. If that applies to your building, it helps to agree access with the neighbours or the managing agent first. Everything else is planned around the building, not the postcode.
- We help you choose the package that suits the leak.
- A visit is booked for a weekday, Saturday or Sunday.
- The investigation works from the stain back to the roof.
- 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
- Let us know where we can park nearby
- If it is not your property yet, arrange access through the agent
- Point out any leaks or damp patches
How to book
Every survey is priced before it’s booked, so you know the cost up front. Prices start from £150, including VAT. For a price for your roof, phone 07833 053749 or use the contact form.
Advice
Wind, rain and roofs in Clapham Junction
Many homes in inner London are Victorian and Edwardian terraces, often with Welsh slate roofs. Many have butterfly roofs draining to a central valley gutter, with parapet walls and gutters hidden behind them. Shared chimney stacks, party-wall upstands and lead work come with this kind of house. Knowing the roof type helps narrow down where water may be getting in. With Carlyle's House about 1.4 miles north, Clapham Junction sits in an area with a long building history. On older houses around here, roofs frequently carry the marks of earlier repairs, from replaced slates to new lead.
If you run a business near Southside Wandsworth, water through a ceiling can damage stock and close a sales floor, so the source needs finding fast. Homes near green spaces such as Imperial Park can get more leaves in their gutters in autumn, and an overflowing gutter soon means a wet wall.
Clapham Junction is about 3 miles south-east of Kensington, in Greater London. We provide roof leak investigations for householders, landlords and businesses in Clapham Junction. Across Greater London, we cover Clapham Junction and the places around it.
Postcode districts we cover here for roof leak investigations: SW11, SW18 and SW4. Whether your property is on York Road, Este Road and Home Road or anywhere close by, we can help. With the A3207 close by, Clapham Junction is easy for us to reach for roof leak investigations. We also cover the places around Clapham Junction: Battersea (1 mile south-east), Sands End (1 mile north-west), Chelsea Harbour (1 mile north-west), Wandsworth (1 mile south-west) and Clapham (1 mile east). We also work in nearby towns like London (4 miles north-east), City of Westminster (4 miles north), Marylebone (4 miles north), Kensington (3 miles north-west), St Pancras (5 miles north-east) and Shoreditch (6 miles north-east).
Near you in Clapham Junction
Typical jobs here are in homes near Imperial Park, The Falcon pub and Thames Christian College, among other places. There is a railway station in Clapham Junction itself: Clapham Junction station. Nearby you will also find Baynard's Castle (4.4 miles north-east) and Battersea General Hospital (0.8 miles north). Not far away are Battersea Park Lake and Wandle Meadow Nature Park.
Clapham Junction questions
Is parking a problem for a survey in Clapham Junction?
Sometimes, yes. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
How do I find out if my home in Clapham Junction is listed?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it’s in a conservation area. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Does the investigation include the repair?
Our job here is to trace the leak and explain it, not to carry out the repair. The report gives any roofer a clear brief.
Do you look in the loft space?
If it is needed and safe to reach, yes. We look for staining, damp, daylight and signs of movement, as far as the space allows.
Are you insured?
Professional indemnity and public liability insurance cover our surveys. Ask if you need details for a managing agent or building owner.
Can you survey a shared roof?
Yes. A shared roof needs access agreed first. Mention it when you get in touch and we will explain what’s needed.
What’s in the survey report?
It works through the roof part by part, in writing and with photos, and ends with what we recommend. The most urgent items are made clear.
Leave it or get it looked at?
A leak rarely stays small. Wet timbers start to decay, plaster softens and insulation stops working. Finding the source early keeps the damage down. In Clapham Junction, as in much of London, water from a roof defect can reach a neighbour’s home as easily as yours: a blocked parapet gutter or slipped slate can let water into the flat below or the house next door. Dealing with it early is far less disruptive.
The cost of a survey depends on the roof: its size, its height, how many sections it has and how it can be reached and seen safely. Roof leak investigation starts from £150, including VAT.
Why book with us
- Thermal imaging and drones used where they help
- Professional indemnity and public liability insurance
- Two decades and more of roof surveys
- Every finding written up with photos
See what a roof survey costs and what we found on two real jobs.
Also near Clapham Junction
Also in Clapham Junction
Tips that help
Some practical points come up on survey after survey. They apply to most roofs:
- Stay off ladders and the roof
- Record whether it leaks in every downpour or only some
- Clear the loft hatch so we can get in
- Tell us if there are tanks or pipes in the loft
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 storm, check the roof from the garden and the street. Slipped slates, lifted ridge tiles and debris on the ground are signs to act on. Small faults dealt with quickly rarely become leaks.
What a survey costs
What a survey costs depends on the time and equipment it needs. That comes down to:
- Which survey package you book
- The type of building, from a house to a block or an office
- How complicated the roof is, with its valleys, chimneys and parapets
- Height and safe access
Prices start from £150, with VAT included, for a Basic Survey. The Standard Survey starts from £250 and the Premium Survey from £400. We confirm the price for your roof before booking.
Booking your survey
Here’s what helps us most when you get in touch:
- The type of building and roof, such as pitched or flat
- Why you want a survey: buying, a leak, a storm or new work
- Anything about access we should know
- Any photos you have, taken from the ground or a window
Our price is from £150, including VAT. What you pay depends on the roof’s size, access and the package, so call 07833 053749 or email us with the details.
Do you need a roof leak investigation in Clapham Junction?
A roof valley collects the rain from two slopes. Split linings, slipped valley tiles or debris can send that water under the coverings. Leaks from valleys often show up some distance away inside.
Signs worth acting on include:
- Leaks below a flat extension roof
- Damp walls below an overflowing gutter
- Damp patches next to the stack
- Water marks that spread in wet weather
If your house is among the older ones in the streets near Clapham Welsh Presbyterian Church, lead flashings, valleys and old chimneys are typical places for water to get in.
Choosing a roof surveyor
- What happens after the report arrives
- Which viewpoints they use to see the roof
- Is VAT included in the price?
- Their report turnaround times