Greater London · London and the South East
Roof Leak Investigation in Dulwich
Roof leak investigations across Dulwich, backed by more than 20 years’ experience. You get a clear report with photographs.
- Brown rings on upstairs ceilings
- Leaks at a dormer or roof window
- Staining where a gutter or parapet meets the wall
What happens on the day
We will ask a few questions first, like when any problem began and what work has been done before. The inspection then takes between one and two hours at a typical home; commercial roofs usually need 3–4 hours. London terraces rarely offer a view of the whole roof from one spot, so a visit in Dulwich moves between viewpoints: the pavement, upstairs windows, the loft and any safe spot at the back. Shared stairs or a basement flat? Tell us who holds the keys.
- 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.
- In the loft, we follow any signs of water back towards the roof.
- Outside, we check flashings, valleys, chimneys, gutters and flat roof details from every safe viewpoint.
- You receive a report with the likely source, photos and recommendations.
Before we arrive
- Unlock side gates and any roof access doors
- Check pets are kept safely away
- Make a note of anything you’d like us to look at
How to book
Getting a price is simple: just phone 07833 053749 or drop us an email, tell us about the property and we will point you to the right survey. The price is agreed up front.
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Roof leak investigation in Dulwich
On older houses, leaks frequently start at lead work and hidden gutters. Lead flashings crack or lift, valley linings wear and parapet gutters overflow when outlets block. A central valley gutter on a butterfly roof often turns out to be the source. Parapet walls and their gutters are checked from wherever it is safe. The findings are recorded with photos. We survey the roof space, valleys and parapet gutters and flat roof details, and the problems we’re asked to look at most are damp underlay across a wide area and damp on a chimney breast.
Many London homes are well over a century old and their roofs have been patched more than once. Insurers usually exclude wear and tear, so it is useful to know whether damage is old or new. That is as true in Dulwich as anywhere in London. A written record with photos helps you explain what was found to whoever deals with it next.
It isn’t only a list of defects. It explains what we found, why it matters and what we recommend.
- Location
- Dulwich (SE22, SE21, SE23)
- Wider area
- Greater London
- Price
- From £150 inc. VAT
- Your report
- A written report with photos, by email
- When we survey
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Roof leak investigations in Dulwich: local notes
Kingswood House, about 1.1 miles south, is one of the historic houses in the wider area around Dulwich. Older roofs in the wider area can hide decades of patch repairs, so the detail matters. 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. Lead flashings, party-wall upstands and shared chimney stacks are typical of these houses, if yours is one of them. Knowing the roof type helps narrow down where water may be getting in.
For landlords with property near West Dulwich station, a tenant living with a leak needs the cause found, not just the stain painted over. If you look after a building such as St Anthony's Catholic Primary School, on a building that size, finding the source of a drip means looking well beyond the stain.
Dulwich is about 1 mile south-east of Herne Hill, in Greater London. In Dulwich, as across Greater London, every roof gets the same careful survey. Our Greater London coverage includes Dulwich.
We cover every part of the SE22, SE21 and SE23 postcode area for roof leak investigations and the streets around it. We cover properties on Court Lane, Druce Road and Boxall Road. Dulwich is on the A2216, so it’s easy for us to get to. We also cover Dulwich Village (1 mile north-west), West Dulwich (1 mile south), Herne Hill (1 mile north-west), Sydenham Hill (1 mile south-east) and Forest Hill (1 mile east). We also work in nearby towns such as London (4 miles north), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (7 miles north-west), St Pancras (6 miles north) and Shoreditch (6 miles north).
Local landmarks in Dulwich
We work in homes and buildings around The Crown and Greyhound pub, Dulwich Park and Alleyn's School. For rail, the closest station is West Dulwich station, roughly 0.7 miles south-west of the centre. Other landmarks nearby include Dulwich Community Hospital (0.9 miles north) and Greenwich Castle (4 miles north-east). Green spaces nearby include Knight's Hill and Centre for Wildlife Gardening.
Your questions about roof leak investigations in Dulwich
Is parking a problem for a survey in Dulwich?
It depends on the street. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
Does a conservation area affect roof work in Dulwich?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
What’s the best way to book?
To book, phone 07833 053749 or send us an email with the address, the type of property and what’s prompted the survey. We’ll confirm the price and agree a day with you.
Can a leak be traced on a dry day?
In most cases, yes. Damp materials can be found without rain. For leaks that only happen in certain storms, we report the most likely routes.
Is thermal imaging part of a leak investigation?
It can, when the conditions are right. It works best after a sunny day, with a dry roof surface and little wind. Damp areas can hold heat differently from dry ones. We always check what it shows with moisture readings.
Can every leak be traced?
We can’t promise to find every leak on one visit. Many leave clear signs, but some only appear in certain weather. The report sets out what we found and the most likely routes.
Why isn’t the leak directly above the stain?
Rain that gets in will run along whatever it lands on. On a flat roof it can travel under the covering before it finds a way through the ceiling. Tracing that path is the heart of a leak investigation.
Tips that help
You do not need to be a roofer to help. Here’s what helps most:
- Let us know what has already been tried
- Check the loft is accessible
- Have an electrician check any wet fittings
- Take dated photos of the leak
The report gives whoever carries out the work a clear starting point. The photos show the defects and where they are, rather than at the stain.
Have flashings and flat roofs looked at every few years. Flashings, valleys and flat roof details are frequent weak points, and wear is easier to deal with before water gets in.
What you can safely check yourself
You can learn a lot from ground level. With binoculars, look for slipped or missing slates and tiles, gaps along the ridge and leaning chimneys. Please don’t climb up for a closer look.
The one thing to avoid is getting up close. Slates, tiles, flat roofs and rooflights can give way. That’s where a survey comes in, using safe viewpoints and a drone where applicable.
Different roofs, different checks
Parapet and box gutters
Hidden gutters run behind parapets or between roofs. When their outlets block, water rises over the lining and runs indoors.
Chimney stacks
Chimneys let water in through pointing, flaunching, flashings and open pots. Each is looked at from every safe viewpoint, and look for damp on the breast inside.
What else we do in Dulwich
Leave it or get it looked at?
Leaks tend to get worse, not better. Each storm can open a gap a little more. Tracing it now lets you plan the work rather than react to it. Work on a London roof is rarely simple to arrange, with parking, neighbours and access all to think about. That is a good reason to find problems early, while there is time to plan.
Prices start from £150, including VAT. The final price depends on the size and height of the roof, access and which survey you book.
Why choose Independent Roof Survey in Dulwich
- Packages from £150, inc. VAT
- Drone and thermal imaging surveys available
- 5,000+ roofs surveyed
- An independent look at the roof
See how roof surveys are priced or what we found on two real jobs.
Common roof problems in Dulwich
Many leaks begin at a flashing. Lead or mortar closes the gap wherever a roof meets a wall, chimney or dormer. When lead lifts or splits, or a mortar fillet cracks, rain runs straight in.
People usually book a survey when they’ve noticed one of these:
- Condensation that looks like a leak
- A leak that comes and goes with the weather
- Stains around a skylight
- Brown rings on upstairs ceilings
If you live near a park such as Dulwich Park, or anywhere with mature trees, autumn leaves can block gutters and valleys, so outlets and downpipes are worth watching.
What to check before booking
- Whether you can ask questions once you have the report
- Whether the price includes VAT
- Whether the loft space is looked at, where there is one
- How long the report takes to arrive