Surrey · London and the South East
Roof Leak Investigation in Sunbury-on-Thames
Tracing where water is getting into your roof for Sunbury-on-Thames, from an experienced roof surveyor. Every survey comes with a written report and photographs.
- Water through the ceiling under a flat roof
- Damp underlay across a wide area
- Water coming in around a roof light or dormer
What we cannot see
Our survey isn’t a RICS Level 2 or Level 3 survey, a structural engineer’s report or an asbestos survey. Other limits to bear in mind:
- An intermittent leak that shows no trace on the day
- Carrying out the fix
- A structural engineer’s report
If in doubt, ring 07833 053749 or email us and we’ll point you to the right survey before you book. What a survey covers and does not.
Roofs we survey in Sunbury-on-Thames
- Slate and tile slopes
- The roof space
- Rooflights and dormers
- Valleys and parapet gutters
- Chimney stacks
- Flat roof details
- Lead flashings
About our roof leak investigation in Sunbury-on-Thames
A leak that comes and goes can be the hardest to pin down. Driving rain from one direction, melting snow or a gutter that overflows in a downpour can all set it off. Notes on when it leaks, and what the weather was doing, help us, along with any photos you’ve taken. We look for the clues it leaves behind, such as tide marks, stained timbers and damp underlay. Moisture readings show where materials are still wet. If you’ve noticed leaks at a dormer or roof window and staining where a gutter or parapet meets the wall, a survey will tell you what’s going on.
Extensions, dormers and conservatories are common on houses in towns like Sunbury-on-Thames, and where an extension meets the house is a common leak point. The flashings and upstands at those joints get a close look. The stain inside is often some way from where water gets in, particularly around extensions.
Every survey ends with a written report, with photographs, emailed to you. It explains the condition of the leaking roof, the defects we found and what we recommend.
- Where
- Sunbury-on-Thames (TW16)
- Wider area
- Surrey
- Cost
- From £150 inc. VAT
- Reports
- Written, with photos, emailed to you
- When we survey
- Monday to Sunday, daytime
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Sunbury-on-Thames questions
How do I find out if my home in Sunbury-on-Thames is listed?
The council and Historic England’s list are the places to check. It is worth checking before planning roof work, as both can affect what’s allowed.
Do you carry out roof surveys in Sunbury-on-Thames?
Yes, Sunbury-on-Thames is one of the places we work. Every survey there gets the same written report with photographs, and visits run on weekdays and weekends.
What’s in the report?
It works through the roof part by part, in writing and with photos, and ends with what we recommend. Points are put in order of urgency where relevant.
How do I book a survey in Sunbury-on-Thames?
It is easiest to call 07833 053749 or email us. Give us the address and some details about the roof, and we will recommend the right survey. We survey on weekdays, Saturdays and Sundays.
Does this replace a RICS home survey?
No. Our survey looks at the roof, not the whole building. For the rest of the building, a RICS home survey is a separate job.
Can every leak be traced?
Not always, and we’ll be honest about that. Water can travel a long way, and some leaks only show in particular storms. If we cannot be sure, the report ranks the possible sources.
Will I get photos?
Yes, every report has them. Pictures sit next to the findings they show.
Towns and villages near Sunbury-on-Thames
More services for Sunbury-on-Thames
Before and after the survey
Getting the most from a roof leak investigation starts before we arrive and carries on afterwards. Some tips:
- Catch drips in a bucket and protect the floor
- Move stored items away from the hatch
- Mention any plumbing above the damp area
- Do not climb onto the roof to look
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.
Keep gutters, valleys and outlets clear, particularly in autumn. Blocked outlets on parapet and flat roofs cause many leaks. Use a professional rather than climbing up yourself.
Why it’s worth a survey now in Sunbury-on-Thames
A leak rarely stays small. Wet timbers start to decay, plaster softens and insulation stops working. Tracing it now means less to put right later. Around Sunbury-on-Thames, gutters that overflow soak the wall below. A slipped tile or worn flashing does the same higher up. Left alone, both only get worse.
A small, low roof with good viewpoints takes less time than a tall, complicated one, and the package matters as well. The price is always agreed first.
Why book us in Sunbury-on-Thames
- Over 20 years’ experience
- 98% of clients satisfied
- Prices that include VAT
- A report with photos
Take a look at our cost guide and two real surveys.
What a roof leak investigation looks like in Sunbury-on-Thames
Many older homes in Surrey have handmade clay tiles and tile-hung upper walls. Horsham stone slab roofs survive on some old buildings in Surrey. Different coverings let water in at different points, which shapes where the search starts. The wider area around Sunbury-on-Thames has a long history of building, with Hampton Court Palace about 3.5 miles east. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and a listed home or one in a conservation area may need consent for changes of material.
Trees in and around Sunbury Park shed leaves that can end up in nearby gutters, and an overflowing gutter soon means a wet wall. If you own a rental within reach of Sunbury station, a clear finding on where water gets in helps you brief a roofer straight away.
Sunbury-on-Thames is about 7 miles south of Hayes, in Surrey. We carry out roof leak investigations for householders, landlords and businesses in Sunbury-on-Thames. Sunbury-on-Thames is one of the towns and villages in Surrey we cover. For surveys nearby, see our Guildford page.
Postcode districts we cover here for roof leak investigations: TW16. We cover properties on Station Road, The Ridings and Ravenscourt and the roads around them. Sunbury-on-Thames is on the A244 and A308, which makes it straightforward to reach. We also cover Upper Halliford (1 mile south-west), Charlton (1 mile west), Ashford Common (1 mile north-west), Hounslow (1 mile north) and Littleton Common (1 mile west). Further out, we also cover Guildford (13 miles south-west), Woking (10 miles south-west), Camberley (15 miles south-west), Epsom (8 miles south-east), Ewell (8 miles south-east) and Egham (6 miles west).
Local landmarks in Sunbury-on-Thames
Typical jobs here are in homes near Sunbury Manor School, The Three Fishes Public House and Sunbury Park, among other places. Sunbury-on-Thames has its own railway station: Sunbury station. A little further out are Kempton Steam Museum (1 mile north-east) and No. 2 New Zealand General Hospital (2 miles south). Green spaces nearby include St Ann's Hill and Kempton Park Reservoirs.
Should I look at the roof myself first?
Watch the gutters in a downpour, from a window or the ground. Overflowing water can point to a blockage or a sagging run.
The one thing to avoid is getting up close. Roofs are fragile and slippery, and falls from height are serious. That is where a survey comes in, using safe viewpoints and a drone where applicable.
Common roof problems in Sunbury-on-Thames
Flashings are one of the commonest sources of roof leaks. Lead or mortar closes the gap wherever a roof meets a wall, chimney or dormer. When lead lifts or splits, or a mortar fillet cracks, rain runs straight in, frequently well away from where it shows.
These are some of the problems a survey can pick up:
- Water that shows only in certain storms
- Damp ceilings under a flat roof
- Wet patches on loft insulation
- Wet patches high on an inside wall
If you look after a building such as St Ignatius RC Primary School, on a building that size, finding the source of a drip means looking well beyond the stain.
Choosing a roof surveyor
- What experience they bring
- Their drone registration, if they fly one
- Which limits apply to the survey
- Is there a chance to talk the report through?
The survey, step by step
Every roof is different; as a rough guide, the survey takes about one to two hours for most homes, though a hard-to-trace leak can take longer. If you have questions on the day, just ask. Semi-detached and terraced homes in a town like Sunbury-on-Thames often share a roof line with the neighbours, so shared parts are looked at as far as they can be seen from your property. Tell us about any known leaks, past repairs or building work when booking.
- We start with your notes and photos of the leak.
- Inside, we check the stain and the ceiling around 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.
- You receive a report with the likely source, photos and recommendations.
Getting ready for the survey
- Note where any stains or damp appear
- Make sure the loft hatch can be reached
- Buyers: confirm access with the estate agent or seller
Getting a price
Buyers should book once an offer has been accepted, so you have the findings in time to act on them before you exchange. For any other survey, just call 07833 053749 or send us an email when you’re ready.