Slough · London and the South East
Colnbrook Roof Leak Investigation
Tracing where water is getting into your roof in Colnbrook. We’ve completed more than 5,000 surveys across London and South East England.
- Leaks that appear only in driving rain
- Damp underlay across a wide area
- Leaks below a flat extension roof
Why get it checked now?
Damp loft insulation loses much of its value. A slow leak can soak it for months before a stain appears. The sooner the cause is found, the less needs replacing. In a small place like Colnbrook, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Roof leak investigation starts from £150, including VAT. The final price depends on how big and how high the roof is, how it can safely be seen and which survey you book.
Why us?
- Package prices that include VAT
- 98% of customers satisfied
- 5,000+ surveys completed
- Over 20 years’ experience
Take a look at how roof surveys are priced and what we found on two real jobs.
Roof leak investigation in Colnbrook: what you get
Roof leaks rarely show up where you’d expect. Water often travels along timbers or underlay before it finds a way down, so a ceiling stain is rarely directly below the cause. Our leak investigation traces it back. Patching the spot above the stain often misses the real cause. Tracing the route first means any work can be aimed at the right place. If you’ve noticed leaks that appear only in driving rain and damp underlay across a wide area, we can find out what’s behind it, on lead flashings, chimney stacks and flat roof details alike.
Roofs in small places like Colnbrook often stand in the open, so storms hit ridges, verges and chimneys hard. Once water gets into older walls, it takes a long time to dry, so it pays to find the cause quickly. A written record also helps if you need to explain it to anyone else.
The report is written in plain words, so it makes sense without any roofing background. Photographs show what each point refers to.
- Where
- Colnbrook (SL3)
- Region
- Slough
- Prices
- From £150 inc. VAT
- Reports
- Written, with photos, emailed to you
- When we survey
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Page updated
- 27 October 2026
Colnbrook: your questions answered
Does a conservation area affect roof work in Colnbrook?
Your council is the best source, with Historic England’s list for listed buildings. A change of roofing material may need consent in either case, and councils can also use Article 4 directions.
Do you cover smaller places like Colnbrook?
Yes, smaller places are covered as well as towns. We cover the whole of London and South East England. Let us know about access, parking and anything unusual about getting there when booking.
Do you climb onto every roof?
Not unless it’s safe. Most of what we need can be seen from safe viewpoints, the loft and, where it applies, a drone, and the report notes anything we couldn’t see.
Do you carry out surveys on Saturdays and Sundays?
We carry out surveys on weekdays, Saturdays and Sundays. To find a day that suits you, call 07833 053749 or use the contact form.
Does the investigation include the repair?
The investigation is about finding the cause. The repair itself is a separate job. The report shows where the water gets in and what should be done, which whoever carries out the work can follow.
Why is the stain in a different place from the leak?
Because water travels. It runs along rafters, battens or underlay before it drips, so the stain may be some distance from where it gets in. That is why we trace the route rather than patching above the stain.
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, and we check for restrictions near airports before flying. We are a CAA-registered drone operator.
What a roof leak investigation does not cover
Some things can’t be seen without opening up the roof, so a survey has limits:
- An intermittent leak that shows no trace on the day
- Carrying out the fix
- Faults hidden behind ceilings or boarding
If you’re not sure which survey you need, ring 07833 053749 or use the contact form and we will give you a straight answer. What a survey covers and does not.
Roof types and parts we check
- Slate and tile slopes
- The roof space
- Chimney stacks
- Rooflights and dormers
- Valleys and parapet gutters
- Flat roof details
- Lead flashings
How we price roof leak investigations
When we price a survey, we consider:
- How big the roof is
- The number of roofs, including extensions and garages
- Features like valleys, chimneys, dormers and parapets
- Whether thermal imaging or a drone is needed
We offer three survey packages: Basic from £150, Standard from £250 and Premium from £400, all with VAT included. The price for your roof depends on its size, access and what you need to know.
What to let us know when you get in touch
What helps most when you contact us:
- Any marks or damp showing indoors
- Photos of the roof, taken safely from the ground or a window
- Any deadline, such as an exchange date
- The address and postcode of the property
When you are ready to go ahead, phone 07833 053749 or drop us an email. From there it is a case of choosing a package, agreeing the price and fixing a day, weekday or weekend.
Nearby places to Colnbrook
What else we do in Colnbrook
When to book a survey in Colnbrook
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.
Things that often lead to a survey include:
- Damp walls below an overflowing gutter
- Condensation that looks like a leak
- Damp ceilings under a flat roof
- Brown rings on upstairs ceilings
Trees in and around Arthur Jacob Nature Reserve shed leaves that can end up in nearby gutters, so outlets and downpipes are worth watching.
Questions to ask before booking
- What happens after the report arrives
- What experience they bring
- Their insurance cover
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
Leaks and storm damage in Colnbrook
With Frogmore House about 3 miles west, Colnbrook sits in an area with a long building history. 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. In this part of the South East, older roofs are mostly slate or clay tile and many newer ones concrete tile, and flat-roofed additions turn up almost everywhere. Different coverings let water in at different points, which shapes where the search starts.
The streets around a church such as Church of St Thomas are often among the oldest in a place, and if you own one of the older houses nearby, water on an older roof tends to find its way in at the lead, the valleys or the chimney. If you look after a building like Colnbrook Church of England Primary School, tracing a leak on a big roof starts with where the water appears and works back.
Colnbrook is about 4 miles north of Staines-upon-Thames, in Slough. Wherever you are in Colnbrook, we can carry out roof leak investigations at your property, on a weekday, Saturday or Sunday. Colnbrook is one of the places in Slough where we work. Guildford is in our area too.
Surveys in SL3 are booked the same way as anywhere else. Local streets include High Street, Rayners Close and Drift Way, all of which we cover. Neighbouring places we cover for roof leak investigations include Poyle (1 mile south-east), Brands Hill (1 mile west), Horton (1 mile south-west), Stanwell Moor (2 miles south-east) and Ditton (2 miles west). Further out, we also cover Slough (4 miles north-west), Cippenham (5 miles north-west), Chalvey (4 miles north-west), Britwell (5 miles north-west), Upton (3 miles north-west) and Burnham (7 miles north-west).
Landmarks near Colnbrook
Typical jobs here are in homes near Arthur Jacob Nature Reserve, The Red Lion Public House and Langley Grammar School and the streets around them. The nearest railway station is Sunnymeads station, about 1.7 miles south-west. Other landmarks nearby include Windsor Castle (3.4 miles west) and Upton Hospital (3.2 miles north-west). Not far away are Uxbridge Moor and Staines Reservoirs.
Different roofs, different checks
Chimney stacks
A stack has several possible ways in for rain. We check each one as far as we can safely see, and look for damp on the breast inside.
Parapet and box gutters
We check the linings, joints and outlets where we can see them safely.
The survey, step by step
Expect us to ask a few questions before we start, about the roof’s history, any leaks and past repairs. Then the inspection itself takes about one to two hours, more where the leak is intermittent or the roof is large. Somewhere like Colnbrook needs a little journey planning: let us know about narrow lanes, gates, long drives and where we can park. The roof is looked at from the ground, from windows, from the loft where there is safe access and from the roof where it’s safe.
- We start with what you’ve seen: where the stain is and when it gets worse.
- Inside, we check the damp area and the loft space above it.
- We check the likely entry points outside, such as flashings, valleys, chimneys and gutters.
- We use moisture detection, and thermal imaging where it is useful.
- Your report sets out where the water is most likely getting in, with photos and recommendations.
Getting ready for the survey
- For flats, make sure roof access has been agreed
- Have any questions written down, so nothing gets missed
- Let us know about parking before the day
Arrange a survey
Unsure which package suits your roof? It’s easiest to call 07833 053749 or drop us an email and describe the roof and what’s worrying you. We will talk you through the options and what they cost.