Greater London · London and the South East
Merton Park Roof Leak Investigation
Tracing where water is getting into your roof in Merton Park, carried out by an experienced roof surveyor. Every survey comes with a written report and photos.
- Ceiling stains that grow after rain
- Drips from nail tips in a cold loft
- Water that shows only in certain storms
Honest limits
In fairness, there are limits to any roof survey:
- Carrying out the fix
- Faults hidden behind ceilings or boarding
- Leaks that only appear in weather we can’t recreate
If in doubt, call 07833 053749 or email us and we’ll point you to the right survey. What a survey covers and does not.
What this survey covers
- Flat roof details
- Slate and tile slopes
- Chimney stacks
- Valleys and parapet gutters
- The roof space
- Lead flashings
- Rooflights and dormers
Roof leak investigation in Merton Park
On older houses, leaks often 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 frequently turns out to be the source. We check parapets, valleys and flashings from every safe viewpoint. The findings are recorded with photos. Common reasons to book are leaks that appear only in driving rain and damp patches next to the stack, across slate and tile slopes, chimney stacks and valleys and parapet gutters.
London’s Victorian and Edwardian roofs have often been repaired many times. Insurers usually exclude wear and tear, so it is useful to know whether damage is old or new. A careful look in Merton Park 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.
The report does not just list problems. For each finding, it explains what it is, why it matters and what we’d recommend, so you can plan your next steps.
- Place
- Merton Park (SW19, SW20, SM4)
- Wider area
- Greater London
- Cost
- From £150 inc. VAT
- Reports
- Written, with photos, emailed to you
- When we survey
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Leave it or get it looked at?
A leak near lights or wiring needs attention quickly. If water is reaching a light fitting or switch, keep clear of it. Then the source needs tracing. A hidden valley or parapet gutter on a London house can hold water for weeks before anyone notices. When the stain finally shows, the damage underneath is often older than it looks.
Prices start from £150, including VAT. What you pay depends on how big and how high the roof is, how it can safely be seen and which survey you book.
Why book with us
- Drone flown under a CAA Flyer ID and Operator ID
- PI and public liability insurance
- Independent findings on the roof’s condition
- 98% of clients satisfied
Take a look at our cost guide or our case studies.
Roof by roof
Parapet and box gutters
A butterfly roof drains to a central valley gutter. Problems there frequently show in the rooms on the top floor.
Flat roof upstands and outlets
Outlets drain a flat roof. When one blocks, water ponds and finds any weak spot. We check outlets and the covering around them.
What we do, step by step
Where it’s relevant and can be reached safely, the roof space is checked as well as the outside. In the loft, the signs we look for are staining, damp, daylight and sagging, as far as the space allows. All in, the survey usually takes between one and two hours for most homes, though a hard-to-trace leak can take longer. In a London area like Merton Park, the main things to sort out are parking and access: let us know about parking, the floor the property is on, any shared entrance and loft access. We then look at whatever is safely visible from the ground, windows, the loft and, where it is safe, the roof itself.
- You let us know where the water appears, when, and what the weather was doing.
- We examine the damp area and the rooms near it.
- In the loft, we follow any signs of water back towards the roof.
- We inspect the likely entry points outside, from the ground, windows and the roof where safe.
- We email a written report showing where the water most likely gets in.
How to prepare
- For a flat or shared roof, check access with the building owner or managing agent
- Make sure pets are kept safely away
- Have any questions written down, so nothing gets missed
Book a survey
If you have photos of the roof, send them over. Take them safely from the ground or a window, and please do not climb up for a closer look. To get started, call 07833 053749 or email us.
Advice
Can I check my roof myself?
A DIY look is useful, but it is not a survey. You will not see flashings, valleys or the backs of chimneys properly from ground level, and those are details a survey looks at closely.
Keep a simple record: dates of leaks, photos from ground level and any work done on the roof. Send it with your enquiry, as it helps us focus the survey.
Before and after the survey
You don’t need to be a roofer to help. Here’s what helps most:
- Photograph the stain each time it appears
- Put a bucket under the drip and move valuables
- Tell us about any past repairs to the roof
- Don’t touch fittings that water is reaching
If the leak turns out to be condensation, the report says so, and suggest how the roof space could be better ventilated. That avoids roof work that wouldn’t help.
Plan a roof survey every few years. Flashings, valleys and flat roof details are frequent weak points, and catching wear early keeps water out.
Wind, rain and roofs in Merton Park
In outer London, interwar semis with hipped, tiled roofs sit alongside older slate-roofed terraces. If your home in Merton Park is one of them, bay roofs, hips and later dormers each have their own details. Different coverings let water in at different points, which shapes where the search starts. The wider area around Merton Park has a long history of building, with Southside House about 1.4 miles west. On older houses around here, roofs frequently carry the marks of earlier repairs, from replaced slates to new lead, and any change of roofing material on a listed home needs checking with the council first.
Take an older house close to St Mary's Church: water on an older roof tends to find its way in at the lead, the valleys or the chimney. Living close to Morden Hall Park is pleasant, but mature trees mean leaves in gutters and valleys each autumn, so outlets and downpipes are worth watching. For businesses in and around places like Southside Wandsworth, a quick answer on where water is coming in keeps a business running.
Merton Park is about 1 mile south-east of Wimbledon, in Greater London. We carry out roof leak investigations for homes and businesses in Merton Park and nearby. Merton Park is one of the places in Greater London we cover. We also survey roofs in London.
We work across the SW19, SW20 and SM4 postcode area for roof leak investigations and the streets around it. You’ll find streets such as Mina Road, Manor Road and Cecil Road, and we cover them all. If you’re just outside Merton Park, we cover Wimbledon Chase (1 mile west), Bushey Mead (1 mile west), Cannon Hill (1 mile south-west), Wimbledon (1 mile north-west) and Crooked Billet (1 mile north-west). We also work in nearby towns such as London (8 miles north-east), City of Westminster (7 miles north), Marylebone (8 miles north), Kensington (6 miles north), St Pancras (9 miles north-east) and Shoreditch (10 miles north-east).
Local landmarks in Merton Park
In Merton Park, that means homes and buildings near Wibbas Down Inn, Morden Hall Park and Wimbledon School of Art. Merton Park’s nearest station is South Merton station, roughly 0.5 miles south. Other landmarks nearby include St George's Hospital (1.6 miles north-east) and Southside Wandsworth (3.1 miles north). Open spaces near Merton Park include Merton Park Green Walks and Henman Hill.
Merton Park questions
Does a conservation area affect roof work in Merton Park?
For listing, use Historic England’s list; for conservation areas, ask the council. The answer matters most when a change of material is on the cards.
Do you carry out roof surveys in Merton Park?
Yes. We work right across London and the South East, and Merton Park is part of that. Just call 07833 053749 or drop us an email and let us know about the property.
What should I do before you arrive?
Note when the leak appears and what the weather was doing. Clear access to the loft. If water is near any fittings, have an electrician check them.
Will I get photos?
Yes. Photos are taken throughout the survey, and they go into the written report.
I live in a flat. Can you survey the roof?
Yes, once whoever controls the roof agrees access. On a shared roof we can only inspect the parts we are allowed to reach.
How experienced are you?
Over 20 years and more than 5,000 surveys, across London and South East England.
Can you always find the source?
We can’t promise it. Water can travel a long way, and some leaks only show in particular storms. Where the source isn’t certain, we list the likely routes in order.