Greater London · London and the South East
Roof Leak Investigation in Gunnersbury
Get a clear view of the leaking roof at a property in Gunnersbury from an independent roof surveyor. Visits run on weekdays and weekends, in the daytime.
- Stains around a skylight
- Wet patches on loft insulation
- Damp ceilings under a flat roof
Gunnersbury: your questions answered
Is Gunnersbury in the area you cover?
Yes, Gunnersbury is one of the places we work. The survey and report are the same in Gunnersbury as anywhere else.
Is my home in Gunnersbury listed or in a conservation area?
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 I have to be there for the survey?
Not necessarily. An outside-only look can be arranged beforehand, but anything inside needs someone there to give access.
How should I prepare for the leak investigation?
Keep a note of when it leaks. Clear access to the loft. If water is near any fittings, have an electrician check them.
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.
Are you structural engineers?
No. Visible signs like deflection or sagging are recorded, but calculations and an engineer’s opinion are outside what we do. The report will say if you need an engineer.
How soon will I get the report?
The Premium Survey report comes the same day, the Standard within 24–48 hours and the Basic within 48 hours. All of them come by email, ready to forward.
How a roof leak investigation works in Gunnersbury
We use moisture detection and thermal imaging where they help. Moisture detection confirms where timbers, plaster or insulation are damp. A thermal camera shows patterns of temperature rather than water, so its findings are checked with moisture readings. Thermal imaging is part of the Premium Survey, and moisture detection comes with Standard. Thermal imaging works best after a sunny day, on a dry roof with little wind. We survey valleys and parapet gutters, the roof space and lead flashings, and common reasons people get in touch are water coming in around a roof light or dormer 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 normally exclude wear and tear, so it is useful to know whether damage is old or new. A careful look in Gunnersbury tells the two apart where the evidence allows. A written record with photographs helps you explain what was found to whoever deals with it next.
Findings are set out part by part, from the main slopes down to the gutters and outlets. You will see the good as well as the bad.
- Place
- Gunnersbury (W4, W3, TW8)
- Region
- Greater London
- Price
- From £150 inc. VAT
- Your report
- Emailed report with photos and recommendations
- Survey days
- Weekdays and weekends
- Cover
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
What this survey can’t tell you
We only report what can safely be seen on the day, so some things are outside what a survey can do:
- Water from pipes, tanks or heating systems
- Leaks that only appear in weather we cannot recreate
- Structural calculations (that’s a structural engineer’s job)
If you are not sure which survey you need, phone 07833 053749 or use the contact form and we will give you a straight answer. What a survey covers and does not.
Roofs we survey in Gunnersbury
- Flat roof details
- Lead flashings
- Valleys and parapet gutters
- Slate and tile slopes
- Chimney stacks
- Rooflights and dormers
- The roof space
Gunnersbury roofs and the weather
Outer London has lots of Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, frequently with hipped roofs in clay or concrete tiles. Hips, bay roofs and later loft conversions are typical of those semis, if your home is one of them. Knowing the roof type helps narrow down where water may be getting in. With Gunnersbury Park about 0.7 miles north-west, Gunnersbury sits in an area with a long building history. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and a listed home or one in a conservation area may need consent for changes of material.
For businesses in and around places such as Livat Hammersmith, finding where water is getting in quickly keeps disruption down. If you live in an older home near St Michael's Church, lead flashings, valleys and old chimneys are typical places for water to get in.
Gunnersbury is about 1 mile south of Acton, in Greater London. We survey roofs in Gunnersbury and the rest of Greater London, as part of our work across London and the South East. We cover towns and villages across Greater London, large and small. Our London page covers surveys nearby.
All of W4, W3 and TW8 is within our area for roof leak investigations. Local streets include Kew Road, Kent Road and Power Road. Main roads around Gunnersbury include the A3000, so getting to you is simple. We also cover Strand-on-the-Green (1 mile south), Kew (1 mile south), Grove Park (1 mile south-east), Chiswick (1 mile east) and Turnham Green (1 mile south-east). Larger places within reach include London (8 miles east), City of Westminster (6 miles east), Marylebone (6 miles east), Kensington (3 miles east), St Pancras (7 miles east) and Shoreditch (9 miles east).
Landmarks near Gunnersbury
Typical jobs here are in homes near Clayton Hotel Chiswick, Kew College Prep and Ark Acton Academy and the streets around them. Also close by are Turnham Green (0.5 miles east) and Library for Iranian Studies (1 mile north). Gunnersbury has its own railway station: Gunnersbury station. A little further out are Barnes Hospital (2 miles south-east) and Livat Hammersmith (2.1 miles east). Not far away are Kew Gardens Lake and Castlebar Hill.
Do you need a roof leak investigation in Gunnersbury?
Valleys carry a lot of water. Worn lead, cracked linings or a build-up of leaves and moss can send that water under the coverings. The stain may appear well away from the valley itself.
It’s worth booking a survey if you’ve seen:
- Wet patches on loft insulation
- Condensation that looks like a leak
- Brown rings on upstairs ceilings
- Damp walls below an overflowing gutter
If you live near a park such as Turnham Green, or anywhere with mature trees, autumn leaves can block gutters and valleys, and an overflowing gutter soon means a wet wall.
Before you book anyone
- Whether VAT is added on top
- How long the report takes to arrive
- Will they check the loft as well as the outside?
- How they plan to inspect the roof safely
What happens on the day
We work from the outside in: first the slopes, edges and gutters from every safe viewpoint, then the roof space where it can be reached. All told, expect an hour or two for a house, and about three to four hours for a commercial roof. For a visit in Gunnersbury, parking and access are the things to plan: let us know 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 roof space and from the roof where it’s safe.
- We help you choose the package that suits the leak.
- We agree a date, including weekends.
- The investigation works from the stain back to the roof.
- Moisture detection and thermal imaging are used where your package includes them and they help.
- The report explains the likely entry point and what needs attention.
Preparing for the visit
- Leave side gates unlocked
- Make sure pets are kept safely away
- Let us know where we can park nearby
Book a survey
Booking is simple: just ring 07833 053749 or drop us an email, let us know about the property and we’ll explain which survey suits. The price is agreed up front.
Related advice
What a survey costs
To price your survey, we look at:
- The shape of the roof and its details
- How tall the building is and how easy the roof is to see
- House, block, shop or office
- Extra roofs, like extensions, dormers or garages
Every price we give includes VAT, and the written report is part of the package. Prices start from £150, including VAT. Where your roof sits in the range depends on its size, height and access.
Getting in touch
When you call or email, these details help:
- Pictures from the garden or a window, if you have them
- Where water is showing inside, if it is
- What made you get in touch
- Anything about access we should know
To arrange a survey, call 07833 053749 or use the contact form with the address and what you’d like to know about the roof. You’ll know the price before anything is booked.
Landlord and commercial surveys in Gunnersbury
Businesses and commercial landlords can book us too, from shops and offices to industrial units. Larger roofs take longer, so they’re priced to suit.
A roof problem in a let property affects your tenants as well as the building. A survey helps you spot issues early and plan the work.
Places near Gunnersbury
Also in Gunnersbury
What we look for on each type of roof
Parapet and box gutters
We check the linings, joints and outlets where we can see them safely.
Slate and tile slopes
On slate roofs, corroded nails let slates slip. Even a single gap can let water in, especially in driving rain.