Greater London · London and the South East
Hendon Roof Leak Investigation
Tracing where water is getting into your roof across Hendon, using drones and thermal imaging where it applies. Call or email for a price.
- Brown rings on upstairs ceilings
- Leaks that appear only in driving rain
- Wet patches on loft insulation
Roof by roof
Lead flashings
Some roofs have mortar where you’d expect lead. Fillets crack and pull away over time, letting rain run behind the joint.
Slate and tile slopes
‘Nail fatigue’ is a common cause of slipped slates. Even a single gap can let water in, particularly in driving rain.
How a roof leak investigation works in Hendon
Most roof leaks start at a joint rather than the middle of a slope. Common entry points include chimney and wall flashings, valleys, parapet and box gutters, and the upstands and outlets on flat roofs. We check each likely route and we follow where the evidence leads. Every chimney, dormer and roof light adds more joints to check. Each one is checked from wherever it is safe to see it. We are often asked to look into damp ceilings under a flat roof and a leak that comes and goes with the weather, across slate and tile slopes, lead flashings and valleys and parapet gutters.
London’s Victorian and Edwardian roofs have often been repaired many times, so a new leak can be the latest sign of wear rather than a single event. Insurers normally exclude wear and tear, so it’s useful to know whether damage is old or new. That is as true in Hendon as anywhere in London. Photographs and a written account give you something specific to show an insurer, a landlord or a roofer.
The Standard Survey adds moisture detection, a structural check and a follow-up consultation. The Premium Survey adds thermal imaging, drone inspection where it applies, structural analysis and an in-person consultation.
- Place
- Hendon (NW4, NW9, NW2, NW11)
- Wider area
- Greater London
- Cost
- From £150 inc. VAT
- Report
- Written, with photos, emailed to you
- Appointments
- Weekdays and weekends
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Leaks and storm damage in Hendon
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. Different coverings let water in at different points, which shapes where the search starts. About 2.3 miles east lies Heath Hall, a reminder of how long the area around Hendon has been built on. Older homes in the wider area often have features worth a closer look, such as lead valleys, tall stacks and roofs that have been patched over the years, and a listed home or one in a conservation area may need consent for changes of material.
Trees in and around Hendon Park shed leaves that can end up in nearby gutters. If you look after a building such as Hendon School, a leak through a large roof is often found some distance from where the water shows inside.
Hendon is about 3 miles north-west of Hampstead, in Greater London. Surveys in Hendon work the same way as everywhere we cover: a careful inspection, photos and a written report. Our area takes in places right across Greater London, from the larger towns to small villages. For surveys nearby, see our London page.
Roof leak investigations in NW4, NW9, NW2 and NW11 are booked the same way as anywhere else. That includes homes and businesses on Church Road, Station Road and Sydney Grove. Main roads around Hendon include the A5 and A41, which makes travel easy. If you are just outside Hendon, we cover The Burroughs (1 mile north-west), Brent Cross (1 mile south), Staples Corner (1 mile south), West Hendon (1 mile west) and The Hyde (1 mile west). Larger places within reach include London (8 miles south-east), City of Westminster (6 miles south-east), Marylebone (6 miles south-east), Kensington (6 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles south-east).
Around Hendon
We work in homes and buildings around Hasmonean Primary School, The White Bear pub and Kisharon College. For rail, the closest station is Hendon station, about 0.7 miles south-west. Well-known places in the area include Brent Cross Shopping Centre (0.5 miles south) and St Andrew's Hospital (1.6 miles south). Not far away are Darland's Lake and Parliament Hill.
Common questions in Hendon
Will parking be an issue for a roof survey in Hendon?
Parking in Hendon, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
How do I find out if my home in Hendon is listed?
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.
Will you definitely find the leak?
Not always, and we will be honest about that. Water can travel a long way, and some leaks only show in particular storms. Where the source is not certain, we list the likely routes in order.
Is it a structural engineer’s report?
No. We note visible signs like sagging or deflection, but we are not structural engineers and don’t carry out calculations. Where an engineer is needed, we say so in the report.
Do you climb onto every roof?
Not always. Some roofs are too steep or fragile to walk on safely. We use safe viewpoints, the loft space and a drone where it applies, and the report records anything we couldn’t see.
How long does the visit take?
Allow about one to two hours for a house, though large, tall or awkward roofs take more time. We’ll confirm what to expect when we arrange the visit.
Do you use thermal imaging to find leaks?
It can, when the conditions are right. It works best after a sunny day, with a dry roof surface and little wind. Wet insulation holds heat longer than dry, which can show up on the image. We always check what it shows with moisture readings.
What happens on the day
Every visit follows the same pattern: we hear what you’ve seen, look at the roof from every safe viewpoint, take photographs as we go and record our findings for the written report. Most visits take between one and two hours for most homes, though a hard-to-trace leak can take longer. In a London conversion, the way into the roof space is often from a communal landing or the top flat. If that applies to your building, it helps to agree access with the neighbours or the managing agent first. Everything else is planned around the building, not the postcode.
- We help you choose the package that suits the leak.
- A visit is booked for a weekday, Saturday or Sunday.
- We inspect inside and out, starting from the stain.
- Where it’s useful and included, we take moisture readings and use thermal imaging.
- The report explains the likely entry point and what needs attention.
Getting ready for the survey
- Tell us about parking before the day
- Point out any leaks or damp patches
- Keep pets out of the way during the survey
Book a survey
Once you know what you need, ring 07833 053749 or email us. From there it is a case of choosing a package, agreeing the price and fixing a day.
Read more
Towns and villages near Hendon
Also in Hendon
Tips that help
A survey works best with a little help from you, before and after. Some tips:
- Tell us about any past repairs to the roof
- Photograph the stain each time it appears
- Put a bucket under the drip and move valuables
- Mention any plumbing above the damp area
Your report arrives by email, with photos of what we found. It explains the likely entry point, the route the water takes and our recommendations. Basic reports come within 48 hours, Standard within 24 to 48 hours and Premium the same day.
Look at the roof from the ground after strong winds. Slipped slates, lifted ridge tiles and debris on the ground are signs to act on. Prompt repairs stop gaps turning into leaks.
Signs you need a roof leak investigation in Hendon
Some water in the loft is not rain at all. Warm, moist air from the house rises into a cold roof space and condenses, particularly in lofts with blocked eaves. Wet nail tips and damp underlay over a wide area are classic signs.
Most people get in touch when they’ve noticed something like this:
- Damp ceilings under a flat roof
- Ceiling stains that grow after rain
- Condensation that looks like a leak
- Water dripping from rafters or underlay
For businesses in and around places such as Brent Cross Shopping Centre, water through a ceiling can damage stock and close a sales floor, so the source needs finding fast.
What to check before booking
- Are they insured for the work?
- Whether you can ask questions once you have the report
- How they’ll see the roof: from ground level, the loft, the roof or by drone
- Whether the roof space is looked at, where there is one
Leave it or get it looked at?
Wet insulation does not insulate well. A slow leak can soak it for months before a stain appears. Catching it early limits what has to be replaced. Work on a London roof is rarely simple to arrange, with parking, neighbours and access all to think about. That’s a good reason to find problems early, while there is time to plan.
There are three survey packages: Basic from £150, Standard from £250 and Premium from £400, all inc. VAT. What your roof costs depends on its size, access and what you want to find out.
What you get with us
- Independent findings on the roof’s condition
- Thermal imaging and drones used where they help
- Visits on any day of the week
- More than 5,000 surveys completed
See our cost guide and two real surveys.
Rented homes, blocks and businesses
With a portfolio of properties, you can book surveys for several addresses. To discuss a number of properties, call 07833 053749 or use the contact form.
Roof problems in a rented home affect tenants as well as the building. A survey helps you spot issues early and plan the work with less disruption.