Greater London · London and the South East
Roof leak investigation in St Johns, Greater London
Roof leak investigations in St Johns from an independent, experienced roof surveyor. More than 20 years and over 5,000 surveys.
- Brown rings on upstairs ceilings
- Leaks that appear only in driving rain
- Water through the ceiling under a flat roof
St Johns roofs and the weather
Many homes in inner London are Victorian and Edwardian terraces, often with Welsh slate roofs. From the street you may see only a parapet, with a butterfly roof and a valley gutter behind it draining to the back. If your home in St Johns is one of them, lead flashings, party-wall upstands and shared chimney stacks are part of the picture too. Knowing the roof type helps narrow down where water may be getting in. Historic houses like Queen's House, about 1.1 miles north-east, show how far back building in the area around St Johns goes. Older homes in the wider area frequently have features worth a closer look, such as lead valleys, tall stacks and roofs that have been patched over the years, and any change of roofing material on a listed home needs checking with the council first.
If you own a rental within reach of St Johns station, finding the cause of a leak fast keeps a tenant’s home dry and the work focused. Living close to Brookmill Park is pleasant, but mature trees mean leaves in gutters and valleys each autumn, and blocked gutters overflow and soak walls.
St Johns is about 4 miles south-east of London, in Greater London. Bookings from St Johns are handled just like any other: a call or an email, a price, then a date. Our Greater London coverage includes St Johns and the places around it.
Every address in SE13, SE10 and SE8 is within our area for roof leak investigations. That includes homes and businesses on Avon Road, Mill Lane and Clare Road. St Johns sits on or near the A2210 and A2211. We also cover New Cross (1 mile west), Deptford (1 mile north), Lewisham (1 mile south-east), Telegraph Hill (1 mile west) and Ladywell (1 mile south). Within a short drive, we also cover London (4 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (8 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).
Around St Johns
Around St Johns, our work takes us to homes and buildings near Wickham Arms, Brookmill Park and Addey and Stanhope School and the streets around them. You will also find St. Paul's (0.7 miles north) and Laban Centre (0.8 miles north). There is a railway station in St Johns itself: St Johns station. Nearby you will also find Fan Museum (0.9 miles north-east) and Lewisham Shopping Centre (0.7 miles south-east). The countryside around St Johns includes Brookmill Road Local Nature Reserve and Tower Hill.
Roof leak investigation in St Johns
Some leaks only appear in certain weather. Wind-driven rain, an overflowing gutter or snow melt may be what triggers it. Telling us when it happens helps a lot and so do photos. We look for the clues it leaves behind, such as tide marks, stained timbers and damp underlay. Moisture detection shows which materials are still damp. We survey valleys and parapet gutters, lead flashings and chimney stacks, and people most often book us about water marks that spread in wet weather and wet patches high on an inside wall.
London’s Victorian and Edwardian roofs have often been repaired many times. Telling wear from a one-off event matters, because insurers usually exclude wear and tear. A careful look in St Johns tells the two apart where the evidence allows. Photos and a written account give you something specific to show an insurer, a landlord or a roofer.
Nothing in the report is left vague: if work is needed, the report says so clearly, along with how urgent it is.
- Where
- St Johns (SE13, SE10, SE8)
- Wider area
- Greater London
- Price
- From £150 inc. VAT
- Reports
- A written report with photos, by email
- Survey days
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
How the survey works
Before we start, let us know why you’ve booked: buying, a leak, storm damage, new work or just wanting to know where things stand. That way we can focus on what matters to you. Most visits take between one and two hours for most homes, though a hard-to-trace leak can take longer. In a London area like St Johns, the main things to sort out are parking and access: let us know about permits, visitor bays or off-street space, which floor the property is on and how to get into the loft. We then look at everything that’s safely in view from the ground, windows, the loft and, where it’s safe, the roof itself.
- We start with your notes and photos of the leak.
- 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 each safe vantage point.
- You receive a report with the likely source, photos and recommendations.
Getting ready for the survey
- Move anything stored under the loft hatch
- Tell us about any leaks, stains or damp patches you know of
- Unlock side gates and any roof access doors
Book a survey
Our price is from £150, including VAT. The exact figure depends on the roof and the package, so call 07833 053749 or drop us an email with the details.
Related advice
How we price roof leak investigations
Several things affect the price of a survey:
- Whether thermal imaging or a drone is needed
- House, block, shop or office
- The package you choose: Basic, Standard or Premium
- How many separate roofs there are, such as extensions, dormers and garages
Prices start from £150, inc. VAT, for a Basic Survey. Standard is from £250 and Premium from £400. We confirm the price for your survey before booking.
Getting in touch
When you call or email, these details help:
- The address and postcode of the property
- The reason for the survey, like buying, a leak or storm damage
- Whether there’s a loft hatch, a shared roof or tricky access
- Any stains, drips or damp patches you’ve seen indoors
For a price for roof leak investigations in St Johns, phone 07833 053749 or email us. Some details about the property and the roof help us price the survey accurately.
Common roof problems in St Johns
When a slate slips or a tile cracks, the underlay takes the water. Ageing felt underlay eventually tears and lets water through, while some very old roofs have nothing under the coverings. On slate roofs, slipping is frequently caused by corroded nails.
A survey makes sense if you’ve noticed:
- Damp patches next to the stack
- Drips in the loft during heavy rain
- Condensation that looks like a leak
- Water marks that spread in wet weather
Anyone responsible for a site like Ashmead Primary School will know that on a building that size, finding the source of a drip means looking well beyond the stain.
Before you book any roof surveyor
- Whether you get a written report with photos
- Their report turnaround times
- Whether VAT is in the quoted price
- Is there a chance to talk the report through?
St Johns: your questions answered
Will parking be an issue for a roof survey in St Johns?
It rarely stops a survey, but it is worth planning. Tell us what parking is available nearby, and the visit is planned around it.
How do I find out if my home in St Johns is listed?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Is this an asbestos survey?
No. Our report may flag materials that could contain asbestos, but only a specialist asbestos surveyor can confirm it. It may be present in buildings built or refurbished before 2000.
Can you survey a shared roof?
Yes, once access has been agreed. Roofs over flats are often shared, so whoever owns or manages the building needs to agree access. We can only inspect what we are given access to.
Can you trace a leak in dry weather?
Usually, yes. Damp materials can be found without rain. For leaks that only happen in certain storms, we report the most likely routes.
Do you take photos of the roof?
Yes, every report has them. Each finding is shown in a picture where possible, so you can see what we mean.
What happens after the survey?
You’ll receive the report by email, and you decide the next step: use it with a seller, an insurer, a roofer or a managing agent.
DIY checks: what’s safe
You can learn a lot from ground level. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Never climb onto the roof to look.
It’s useful to keep a record: dates of leaks, photos from ground level and any work done on the roof. Send it with your enquiry and it will help the survey.
Also in St Johns
Roof by roof
Lead flashings
Wherever a roof meets a wall or stack, a flashing keeps rain out. We check for lead that has lifted, split or slipped.
Parapet and box gutters
Linings, joints and outlets are inspected wherever it is safe.
When you need someone else
A survey is a proper look at the leaking roof, but it cannot do everything. The main limits are:
- Whether rotten timbers meet design loads
- Leaks from plumbing, tanks or pipework rather than the roof
- An intermittent leak that shows no trace on the day
If you’re not sure which survey you need, ring 07833 053749 or use the contact form and we’ll give you a straight answer. What our survey covers.
What this survey covers
- Slate and tile slopes
- Lead flashings
- Flat roof details
- The roof space
- Rooflights and dormers
- Chimney stacks
- Valleys and parapet gutters