Greater London · London and the South East
Roof Leak Investigation in Colindale
Tracing where water is getting into your roof in Colindale, using drones and thermal imaging where it applies. Get in touch for a price.
- Water that shows only in certain storms
- Wet patches high on an inside wall
- Condensation that looks like a leak
About our roof leak investigation in Colindale
Our job is to find the likely source and tell you. The report shows, with photos, where we believe the water gets in and how it travels, and recommends what should be done. Whoever does the work then has a clear starting point. The investigation finds and explains the cause, while the repair is a separate matter. We survey slate and tile slopes, chimney stacks and lead flashings, and the problems we’re asked to look at most are drips from nail tips in a cold loft and ceiling stains that grow after rain.
In converted houses and blocks across London, water from a roof can run a long way before it shows on a ceiling. Tracing it back matters, both for dealing with the cause and for any insurance claim. In Colindale, we inspect what we can reach safely and are given access to. Tell us when the water shows, and in what kind of weather.
Where we cannot see part of the leaking roof, the report says so. That way, it is clear what was covered and what wasn’t.
- Place
- Colindale (NW9, NW4, HA8)
- Region
- Greater London
- Prices
- From £150 inc. VAT
- Report
- A written report with photos, by email
- Survey days
- Monday to Sunday, daytime
- Insurance
- Professional indemnity and public liability
- Call
- 07833 053749
- Page updated
- 27 October 2026
Roof by roof
Valleys
A valley takes the rain from both sides of the roof. Worn or split linings and slipped valley tiles let it under the coverings.
Lead flashings
Water from a failed flashing can travel down the wall or along a rafter. We check every flashing that could feed the stain.
DIY checks: what’s safe
During heavy rain, look at the gutters from the ground or a window. Overflowing water can point to a blockage or a sagging run.
Your own check is a good start, but it isn’t a survey. From the ground, valleys, flashings and the backs of chimneys are often out of sight, and those are details a survey looks at closely.
What we can’t see
Our survey is not a RICS Level 2 or Level 3 survey, a structural engineer’s report or an asbestos survey. Other limits to bear in mind:
- A structural engineer’s report
- Leaks that only appear in weather we can’t recreate
- Faults hidden behind ceilings or boarding
Not sure which survey suits your roof? You can call 07833 053749 or use the contact form and we’ll tell you. The full list of what we check.
Roofs we survey in Colindale
- Rooflights and dormers
- Slate and tile slopes
- Valleys and parapet gutters
- The roof space
- Flat roof details
- Lead flashings
- Chimney stacks
Also near Colindale
What else we do in Colindale
Why act early in Colindale
Water damage grows the longer it’s left. Wet timbers start to decay, plaster softens and insulation stops working. Finding the source early keeps the damage down. London’s older roofs often have bitumen felt underlay or none at all, so once the slates or flashings let water past, little stops it reaching ceilings. Left alone, that means wet timbers and plaster, which is a far bigger job than the roof fault itself.
What a survey costs comes down to the roof itself: how big it is, how high it is, the number of separate roofs and how safely it can be seen. Roof leak investigation starts from £150, including VAT.
Why us?
- More than 5,000 surveys completed
- Weekday and weekend surveys
- Clear package prices, including VAT
- An independent view of the roof
Take a look at what a roof survey costs or our case studies.
Colindale: your questions answered
Can parking be tricky for a visit in Colindale?
It depends on the street. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
Do you carry out roof surveys in Colindale?
We do. Every survey there gets the same written report with photos, and visits run on weekdays and weekends.
Do you use drones?
Yes, where it is applicable. Our sub-250g drone is flown by a CAA-registered operator with a Flyer ID and Operator ID, and the airspace and weather are checked before every flight.
What insurance do you have?
Our cover is professional indemnity plus public liability.
Can you trace a leak in dry weather?
In many cases, yes. Stains, tide marks, damp timbers and moisture readings normally point the way. Some leaks only show in particular weather, so photos and notes from when it leaks help a lot.
Does the investigation include the repair?
Our job here is to trace the leak and explain it, and the repair is separate. The report gives any roofer a clear brief.
What happens after the survey?
You’ll receive the report by email, and you decide the next step: raise it with a seller, send it to an insurer, brief a roofer or share it with a managing agent.
What happens on the day
After the inspection, everything we found is written up as a written report with photographs, emailed to you. On timing, it normally takes about 1–2 hours at a typical home, while a commercial roof takes nearer three to four hours. Surveys in Colindale can be booked for any day of the week. It helps if you can point us to a visitor permit or a nearby bay, and to clear a path to the loft hatch. A back bedroom window can be the best vantage point for a rear addition, so we may ask to use one.
- We help you choose the package that suits the leak.
- We agree a date, including weekends.
- We inspect inside and out, starting from the stain.
- Where it is useful and included, we take moisture readings and use thermal imaging.
- The report explains the likely entry point and what needs attention.
Before we arrive
- Check the loft hatch can be reached
- Make sure pets are kept safely away
- Gather any invoices or paperwork from past roof work
How to book
If you’re buying, it helps to book soon after your offer is accepted, so you have the findings in time to act on them before you exchange. For any other survey, just call 07833 053749 or drop us an email when you are ready.
Related advice
Surveys for landlords and agents in Colindale
Businesses and commercial landlords can book us too. Larger roofs take longer.
Surveys can also be booked by buyers’ agents acting for a client. Reports are emailed, so they’re easy to pass on.
What a roof leak investigation looks like in Colindale
Outer London has plenty of Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, often with hipped roofs in clay or concrete tiles. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. The covering and its details give the first clues when tracing where water is coming from. About 3.5 miles east lies Heath Hall, a reminder of how long the area around Colindale has been built on. On older houses around here, roofs frequently carry the marks of earlier repairs, from replaced slates to new lead.
Take a building like Colindale Primary School: on a building that size, finding the source of a drip means looking well beyond the stain. For landlords with property near Hendon station, a tenant living with a leak needs the cause found, not just the stain painted over. If you own one of the older houses in the streets near St Matthias the Apostle church, old mortar, worn lead and slipped slates are the usual suspects when water gets in.
Colindale is about 1 mile south-east of Burnt Oak, in Greater London. We carry out roof leak investigations for homes and businesses in Colindale and nearby. We cover towns and villages across Greater London, from the larger towns to small villages. You can also see our page for London.
We survey roofs across the NW9, NW4 and HA8 postcode area for roof leak investigations. If you need a roof leak investigation at a property on Cecil Road, Booth Road and Ajax Avenue or a nearby road, we can help. Colindale is on the A5150, which makes it straightforward to reach. We also cover the places around Colindale: West Hendon (1 mile south), The Hyde (1 mile south), The Burroughs (1 mile east), Hendon (1 mile south-east) and Kingsbury (1 mile south-west). We also work in nearby towns like London (9 miles south-east), City of Westminster (7 miles south-east), Marylebone (7 miles south-east), Kensington (7 miles south), St Pancras (7 miles south-east) and Shoreditch (9 miles south-east).
Local landmarks in Colindale
Around Colindale, our work takes us to homes and buildings near Sunny Hill Park, Saracens High School and Kisharon College. Colindale’s nearest station is Hendon station, about 1 mile south-east of the centre. Well-known places in the area include Edgware Community Hospital (1.3 miles north-west) and Brent Cross Shopping Centre (1.5 miles south-east). Not far away are Darland's Lake and Parliament Hill.