Greater London · London and the South East
Welling Roof Leak Investigation
Roof leak investigations in Welling, with over 20 years’ experience behind it. You get a clear report with photos.
- Water coming in around a roof light or dormer
- Wet patches high on an inside wall
- Leaks below a flat extension roof
Roof leak investigation in Welling: what you get
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’s safe. Our report shows what we found, with photos. We survey valleys and parapet gutters, lead flashings and flat roof details, and common reasons people get in touch are condensation that looks like a leak and leaks that appear only in driving rain.
In London, leaks frequently start somewhere hidden: a butterfly roof’s central valley gutter, a parapet gutter, a chimney flashing or a flat roof over a back addition. Whether you are tracing a leak or recording storm damage in Welling, those are among the first places to look. Water from a hidden gutter can run along joists and show up a room or two away.
The report is written in plain words, so you don’t need to be a roofer to follow it. Each point is backed by a photo where possible, with the urgent items made clear.
- Location
- Welling (DA16, DA15, DA6)
- Region
- Greater London
- Cost
- From £150 inc. VAT
- Reports
- Written, with photos, emailed to you
- Appointments
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Page updated
- 27 October 2026
How the survey works
Where it’s relevant and can be reached safely, the loft 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 typically takes about one to two hours on an ordinary house, with bigger or more complicated roofs taking longer. In a London area like Welling, the main things to sort out are parking and access: tell us about permits, visitor bays or off-street space, which floor the property is on and how to get into the loft. On the day, the roof is looked at from the ground, from windows, from inside the loft space and from the roof where it’s safe.
- You pick a Basic, Standard or Premium Survey.
- A visit is booked for a weekday, Saturday or Sunday.
- 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 we arrive
- Check pets are kept safely away
- Jot down any questions you want answered
- Clear the way to the loft hatch
Book a survey
Buyers should book once an offer has been accepted, so there’s time to use the report before exchange. For any other survey, just call 07833 053749 or email us when you’re ready.
Advice
Leaks and storm damage in Welling
With Danson House about 0.4 miles south-east, Welling 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, and the council can say whether a home is in a conservation area. Further from the centre, London’s housing takes in interwar semis with hipped roofs in clay or concrete tiles as well as slate-roofed terraces. If your home in Welling is one of them, bay roofs, hips and later dormers each have their own details. Where water gets in depends a good deal on what the roof is made of and how it is detailed.
For an older house near a landmark like St John's Church, leaks on older roofs often start at lead flashings, valleys or around old chimney stacks. For landlords with property near Welling station, a clear finding on where water gets in helps you brief a roofer straight away.
Welling is about 9 miles east of London, in Greater London. Whether the building in Welling is a house, a flat or a commercial unit, we can survey the roof. Welling is one of the places in Greater London we cover for roof leak investigations. We also survey roofs in London.
We cover every part of the DA16, DA15 and DA6 postcode area for roof leak investigations and the streets around it. If you need a roof leak investigation at a property on Days Lane, Hook Lane and Lyme Road or a nearby road, we can survey it. Being close to the A207, Welling is simple for us to get to. Nearby, we also carry out roof leak investigations in Crook Log (1 mile east), Blendon (1 mile south-east), Upton (1 mile east), Bexleyheath (1 mile east) and West Heath (1 mile north-east). Larger places within reach include London (9 miles west), City of Westminster (12 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (11 miles north-west) and Shoreditch (9 miles north-west).
Near you in Welling
We work in homes and buildings around Nags Head pub, Danson Park and Bexley Grammar School and the streets around them. The closest station to Welling is Welling station, roughly 0.5 miles north-west of the centre. Well-known places in the area include Greenwich Castle (5 miles west) and Broadway Shopping Centre (1.6 miles east). Not far away are The Tarn and Summer Hill.
What a survey costs
Our packages start from £150, including VAT. The price for your roof depends on:
- Basic, Standard or Premium
- How many separate roofs there are, such as extensions, dormers and garages
- Any need for thermal images or a drone flight
- How tall the building is and how easy the roof is to see
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. Our price is from £150, including VAT.
Helping us price your survey
The more you tell us, the easier it is to price the survey. When you contact us, tell us:
- Pictures from the garden or a window, if you have them
- Where the property is, with the postcode
- Any deadline, like an exchange date
- Whether there is a loft hatch, a shared roof or tricky access
Unsure which package suits your roof? It is easiest to phone 07833 053749 or drop us an email and describe the roof and why you want it surveyed. We’ll talk you through the options and what they cost.
Towns and villages near Welling
Also in Welling
Your questions about roof leak investigations in Welling
Does a conservation area affect roof work in Welling?
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 parking a problem for a survey in Welling?
Typically it is manageable with a little notice. Let us know the parking rules on your street and we’ll work around them.
Could my leak actually be condensation?
Condensation can look very like a leak. Drips from nail tips, damp underlay over a wide area and poor loft ventilation point towards condensation. We look at the pattern, take moisture readings and tell you which is more likely.
Do you work in Welling?
Yes. Welling is part of the area we cover.
Do you carry professional indemnity insurance?
Our cover is professional indemnity plus public liability.
Which days do you carry out surveys?
We survey on any day from Monday to Sunday, during the day. Let us know your preferred days when you book.
Will you fly a drone over my roof?
Yes, where applicable and safe. We fly a sub-250g drone and we are a CAA-registered drone operator (Flyer ID and Operator ID). Drone inspection is part of the Drone Roof Survey and the Premium Survey, where applicable.
When to book a survey in Welling
Many leaks begin at a flashing. Where a roof meets a chimney, a wall or a dormer, lead or mortar seals the joint. Once that seal cracks or lifts, water gets behind it.
Look out for signs like these:
- Wet patches on loft insulation
- Water coming in around a roof light or dormer
- A leak that comes and goes with the weather
- Water marks that spread in wet weather
If you look after a building such as Danson Primary School, tracing a leak on a big roof starts with where the water appears and works back.
What to check before booking
- Will they check the loft as well as the outside?
- Do they have a CAA Flyer ID and Operator ID for drone work?
- What they won’t be able to tell you
- Their report turnaround times
How the survey changes by roof type
Chimney stacks
A stack has several possible ways in for rain. Each is checked from each safe vantage point, and look for damp on the breast inside.
Parapet and box gutters
Linings, joints and outlets are inspected wherever it’s safe.
Rented homes, blocks and businesses
Landlords, agents and building managers in Welling and across Greater London can book any of our surveys. For a price for a let property or a block, phone 07833 053749 or drop us an email.
If you own several properties, you can book surveys for several addresses. To arrange surveys for several addresses, call 07833 053749 or use the contact form.
DIY checks: what’s safe
A lot can be seen from ground level. With binoculars, look for slipped or missing slates and tiles, gaps along the ridge and leaning chimneys. Please do not climb up for a closer look.
Inside, the loft is a good place to look, with care. Use a torch and stay on the joists or boards, checking for stains, damp wood or chinks of daylight.