Surrey · London and the South East
Roof Leak Investigation in Knaphill
Find out what’s going on with the leaking roof before you decide what to do next. We carry out roof leak investigations in Knaphill.
- Water that shows only in certain storms
- Condensation that looks like a leak
- Damp on a chimney breast
Why it’s worth a survey now in Knaphill
A leak that returns after a repair typically means the real source wasn’t found. A careful investigation looks at every likely route, not just the obvious one. It gives the next repair a far better chance. Tradespeople may need to travel further to a smaller place like Knaphill, so it’s useful to plan roof work rather than call someone out in a hurry. Knowing early gives you time to get the right people in.
Thermal imaging and drone inspection (where it applies) come with the Premium Survey, which starts from £400, inc. VAT. We can help you choose the package that fits what you want to find out.
Why choose Independent Roof Survey in Knaphill
- Customer satisfaction of 98%
- 20+ years’ experience
- Weekday and weekend surveys
- We hold a CAA Flyer ID and Operator ID
Take a look at our cost guide or our case studies.
Roof leak investigation in Knaphill: what you get
Older homes have more places for water to get in. Lead flashings crack or lift, valley linings wear and parapet gutters overflow when outlets block. A central valley gutter on a butterfly roof frequently turns out to be the source in heavy rain. We check parapets, valleys and flashings from every safe viewpoint. Our report shows what we found, with photos. Typical surveys look at water coming in around a roof light or dormer and drips from nail tips in a cold loft, on lead flashings, chimney stacks and valleys and parapet gutters.
In a smaller place like Knaphill, some roofs face open ground, so wind and driving rain find any weakness in ridges, verges and flashings. A leak that only appears in certain weather often points to an exposed detail. It’s useful to know when and where the water appears. Gutters and downpipes on the exposed side are worth a look as well.
How fast the report arrives depends on the package: Basic within 48 hours, Standard in 24–48 hours and Premium the same day.
- Place
- Knaphill (GU21, GU24)
- Region
- Surrey
- Price
- From £150 inc. VAT
- Reports
- Written, with photos, emailed to you
- Survey days
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
Leaks and storm damage in Knaphill
If your home is older, it’s worth knowing whether it is listed or in a conservation area before planning roof work. Changes that affect a listed building’s special interest need listed building consent, and councils can also use Article 4 directions to control changes in conservation areas. In Surrey, older roofs are often handmade clay tile, with tile-hanging on many upper walls. Some old buildings in Surrey and Sussex have Horsham stone slab roofs. The covering and its details give the first clues when tracing where water is coming from.
Take a building like Knaphill School: water through a big roof can travel a long way before it drips, so the search covers more than the obvious spot. Living close to Brookwood Lye is pleasant, but mature trees mean leaves in gutters and valleys each autumn, so outlets and downpipes are worth watching.
Knaphill is about 2 miles west of Woking, in Surrey. Wherever you are in Knaphill, we can carry out roof leak investigations at your property, on a weekday, Saturday or Sunday. Our area takes in places right across Surrey, large and small.
All of GU21 and GU24 is covered for roof leak investigations. That includes homes and businesses on Wood Lane, High Street and Barnby Road. Other places close to Knaphill include Bisley (1 mile north-west), Sheet's Heath (1 mile south-west), Castle Green (1 mile north), Brookwood (1 mile south-west) and Penny Pot (1 mile north). Further out, we also cover Guildford (5 miles south), Camberley (5 miles west), Epsom (15 miles east), Farnham (11 miles south-west), Egham (8 miles north) and Walton-on-Thames (10 miles north-east).
Local landmarks in Knaphill
Locally, jobs take us to homes and businesses close to Anchor Inn, The Winston Churchill School A Specialist Sports College and Brookwood Lye and the streets around them. For rail, the closest station is Brookwood station, about 1.4 miles south-west. A little further out are The Peacocks (2.5 miles east) and Brookwood Hospital (less than half a mile south). The countryside around Knaphill includes Brookwood Lye.
When to book a survey in Knaphill
Every flat roof covering has a working life. Felt frequently lasts around 15 to 20 years, and splits, blisters and lifting laps let water in. Leaks often start at the edges, upstands and outlets.
These are some of the problems a survey can pick up:
- Water through the ceiling under a flat roof
- Leaks at a dormer or roof window
- Damp walls below an overflowing gutter
- Ceiling stains that grow after rain
Shop and office owners around The Peacocks may find that a quick answer on where water is coming in keeps a business running.
Before you book any roof surveyor
- Whether they hold professional indemnity and public liability insurance
- Whether VAT is added on top
- How soon the report will arrive
- Whether the inside of the roof is included
Different roofs, different checks
Lead flashings
Mortar fillets are sometimes used instead of lead. Fillets crack and pull away over time, letting rain run behind the joint.
Parapet and box gutters
Linings, joints and outlets are inspected wherever it is safe.
Landlords, agents and block managers in Knaphill
We survey roofs for landlords and agents as well as householders. The report gives you a dated record of the leaking roof, with photographs, useful for planning maintenance.
Any of our surveys can be booked by landlords, agents and building managers in Knaphill. To discuss a property or a block, call 07833 053749 or use the contact form.
What happens on the day
The visit typically starts outside and finishes in the loft: first the slopes, edges and gutters from every safe viewpoint, then the loft space where it can be reached. In total, it takes roughly 1–2 hours for most houses, though large, tall or awkward roofs take more time. With a bit of garden around a house, as there frequently is around Knaphill, the roof can be viewed from several angles. Mention any side of the property we can’t get to. Inside, the loft is looked at where it can be reached safely.
- We start with what you’ve seen: where the stain is and when it gets worse.
- Inside, we check the damp area and the roof space above it.
- Likely entry points outside are checked, from flashings and valleys to gutters and outlets.
- Where it helps, we take moisture readings and use thermal imaging.
- You receive a written report with photos showing the likely source and what needs attention.
Getting ready for the survey
- Make sure the loft hatch can be reached
- For flats, check roof access has been agreed
- Point out any leaks or damp patches
Arrange a survey
Getting a price is simple: just ring 07833 053749 or use the contact form, let us know about the property and we will explain which survey suits. We confirm the price before anything is booked.
Advice
Nearby places to Knaphill
Other services in Knaphill
How we price roof leak investigations
Every roof is different, so prices are confirmed before booking. This is what makes a difference:
- The shape of the roof and its details
- Extra roofs, like extensions, dormers or garages
- The use of thermal imaging or a drone
- Whether you choose the Basic, Standard or Premium Survey
Simple, low roofs take less time to survey than tall or complicated ones, and the package you pick makes a difference too. The price is always agreed first.
Getting in touch
You don’t need to know any roofing terms. Just let us know:
- Photos of the roof, taken safely from ground level or a window
- Dates you’re working to, such as exchange
- Access details, such as a loft hatch or a shared roof
- The address and postcode of the property
Surveys can be booked for weekdays, Saturdays or Sundays. To arrange a day that suits you, call 07833 053749 or email us.
Common questions in Knaphill
Is my home in Knaphill listed or in a conservation area?
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.
Will you come out to Knaphill?
Yes, Knaphill is on our map. A small place gets exactly the same survey as a big one.
Which days do you carry out surveys?
Visits run seven days a week in the daytime. Just say which days work for you.
What does the report include?
It works through the roof part by part, in writing and with photos, and ends with what we recommend. The most urgent items are made clear.
Can a leak be traced on a dry day?
In most cases, yes. Moisture detection shows where materials are damp even on a dry day. For leaks that only happen in certain storms, we report the most likely routes.
How long does a roof leak investigation take?
The visit typically takes between one and two hours for most homes, though a hard-to-trace leak can take longer. We will confirm what to expect when we arrange the visit.
Can you inspect my roof with a drone?
Where it helps and it’s safe, yes. Whether we can fly on the day depends on the weather and the airspace rules. We hold a CAA Flyer ID and Operator ID.