Greater London · London and the South East
Roof leak investigation in Kensal Town, Greater London
Roof leak investigations in Kensal Town from an independent, experienced roof surveyor. Over 5,000 surveys and 20+ years behind us.
- Wet patches on loft insulation
- A leak that comes and goes with the weather
- Stains around a skylight
How a roof leak investigation works in Kensal Town
Most roof leaks start at a joint rather than the middle of a slope. Common entry points include chimney and wall flashings, valleys, parapet and box gutters, and the upstands and outlets on flat roofs. Each of these is checked in turn and we follow where the evidence leads. Chimneys, dormers and roof lights each add joints of their own. Each one is looked at from wherever it’s safe to see it. We survey the roof space, lead flashings and valleys and parapet gutters, and the problems we’re asked to look at most are drips in the loft during heavy rain and damp ceilings under a flat roof.
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’re tracing a leak or recording storm damage in Kensal Town, 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.
Findings are set out part by part, from the main slopes down to the gutters and outlets, with a note and a photo for each point. It records what’s sound as well as what isn’t.
- Location
- Kensal Town (W10, W9, W11)
- Region
- Greater London
- Price
- From £150 inc. VAT
- Report
- Emailed report with photos and recommendations
- Survey days
- Weekdays, Saturdays and Sundays
- Insurance
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
What you can safely check yourself
A DIY look is useful, but it isn’t a survey. From ground level, valleys, flashings and the backs of chimneys are often out of sight.
Look up at the roof after a storm, from the ground: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Do not go up yourself.
What a roof leak investigation looks like in Kensal Town
Welsh slate on Victorian and Edwardian terraces is a familiar sight across inner London. From the street you may see only a parapet, with a butterfly roof and a valley gutter behind it draining to the back. Lead flashings, party-wall upstands and shared chimney stacks are typical of these houses, if yours is one of them. Each of these roof types has its own typical places for water to get in. Historic houses such as Kensington Palace, about 1.6 miles south-east, show how far back building in the area around Kensal Town goes. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead, and a listed home or one in a conservation area may need consent for changes of material.
If you look after a shop, office or commercial unit, for instance near Westfield London, a quick answer on where water is coming in keeps a business running. If you own a rental within reach of Queens Park (London) station, a tenant living with a leak needs the cause found, not just the stain painted over. Trees in and around Emslie Horniman's Pleasance shed leaves that can end up in nearby gutters, so outlets and downpipes are worth watching.
Kensal Town is about 2 miles north of Kensington, in Greater London. We cover Kensal Town and the rest of Greater London. Our area takes in places right across Greater London, from the larger towns to small villages.
Postcode districts we cover here for roof leak investigations: W10, W9 and W11. You will find streets such as Peach Road, Parry Road and Barlby Road, all of which we cover. You will find Kensal Town on the A4207, so it’s easy for us to get to. We also cover North Kensington (1 mile west), Notting Dale (1 mile south), Kensal Rise (1 mile north-west), Queen's Park (1 mile north-east) and Kensal Green (1 mile north-west). Within a short drive, we also cover London (5 miles east), City of Westminster (3 miles east), Marylebone (3 miles east), St Pancras (4 miles east), Shoreditch (6 miles east) and Walthamstow (9 miles north-east).
Near you in Kensal Town
Around Kensal Town, our work takes us to homes and buildings near All Saints Catholic College, Emslie Horniman's Pleasance and Maida Vale School and the streets around them. The closest station to Kensal Town is Queens Park (London) station, roughly 0.7 miles north. A little further out are Westfield London (1.2 miles south-west) and Paddington General Hospital (0.5 miles east). Not far away are Campden Hill and Greville Place nature reserve.
Nearby places to Kensal Town
What else we do in Kensal Town
How the survey changes by roof type
Valleys
Leaves and moss build up in valleys and hold water back. In heavy rain, it can spill under the edges of the slates or tiles.
Chimney stacks
We look at the outside of the stack and the breast inside, not a flue, gas or sweep inspection.
What happens if roof problems are left?
A leak that returns after a repair typically means the real source wasn’t found. We look past the obvious spot and check each likely route. That’s often what breaks the cycle. Blocked gutters and hoppers on London houses overflow and soak brickwork. A small blockage left for a few winters becomes a damp problem.
Thermal imaging and drone inspection (where it applies) come with the Premium Survey, from £400 with VAT included. We can help you choose the package that fits what you want to find out.
Why us?
- Thermal imaging and drone inspection where they help
- Packages from £150, inc. VAT
- We hold a CAA Flyer ID and Operator ID
- Professional indemnity and public liability insurance
Read what a roof survey costs or two real surveys.
What this survey can’t tell you
It is a careful look at the leaking roof, not the whole story. Its limits include:
- What’s under the covering or behind the plaster
- A promise to find every leak on a single visit
- Plumbing leaks that look like roof leaks
Not sure which survey suits your roof? You can call 07833 053749 or drop us an email and we will tell you before booking. What our survey covers.
What we check
- Chimney stacks
- Rooflights and dormers
- Valleys and parapet gutters
- Slate and tile slopes
- Lead flashings
- Flat roof details
- The roof space
The survey, step by step
The visit has one job: to see as much of the leaking roof as can be seen safely and record it clearly. Everything we note and photograph goes into the written report. The visit normally takes roughly 1–2 hours on an ordinary house; commercial roofs usually need 3–4 hours. In a London conversion, the way into the roof space is often from a communal landing or the top flat. Where that is the case, access needs agreeing with whoever controls that landing. Otherwise, the visit in Kensal Town runs like any other.
- You tell us 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 ground level, windows and the roof where safe.
- You receive a report with the likely source, photos and recommendations.
Preparing for the visit
- If you are buying, let the agent know when we are coming
- Let us know about parking before the day
- Have any paperwork from past roof work to hand
How to book
If you’re buying, it’s useful to book soon after your offer is accepted, so you have the findings in time to act on them before you exchange. Otherwise, simply call 07833 053749 or send us an email whenever suits you.
Related advice
Practical tips
Nothing here needs a ladder. A few suggestions:
- Let us know what has already been tried
- Tell us if there are tanks or pipes in the loft
- Keep water away from lights and sockets
- Stay off ladders and the roof
Once the work is done, hold on to the report. If the leak returns, it’s a useful record of what was found, which makes the next step quicker.
Keep the loft space ventilated. Good airflow reduces condensation, and condensation is a common false alarm. Keep insulation clear of the eaves.
Common questions in Kensal Town
Will parking be an issue for a roof survey in Kensal Town?
Parking in Kensal Town, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available as you book.
Is Kensal Town in the area you cover?
We do. Every survey there gets the same written report with photographs.
What does a roof survey cost?
Prices start from £150, including VAT. Our three packages are Basic from £150, Standard from £250 and Premium from £400, including VAT.
Will you fly a drone over my roof?
Where it is applicable and safe, yes. We’re a CAA-registered drone operator (Flyer ID and Operator ID), flying a sub-250g drone. It’s included in the Drone Roof Survey and, where it applies, the Premium Survey.
Can you tell me if my roof has asbestos?
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.
Do you carry professional indemnity insurance?
We’re covered by professional indemnity and public liability insurance, for every survey we carry out.
Which days do you carry out surveys?
We carry out surveys seven days a week. To arrange a date, phone 07833 053749 or email us.