Greater London · London and the South East
Thermal imaging roof survey in Hendon, Greater London
Find out what’s going on with the roof before you decide what to do next. Thermal roof surveys in Hendon, with photos and a clear written report.
- Heat escaping through the roof
- Cold spots on ceilings under the roof
- Thin or uneven insulation in the roof
Should I look at the roof myself first?
Your own check is a good start, but it isn’t a survey. You will not see flashings, valleys or the backs of chimneys properly from ground level.
After strong wind, take a look from the pavement or garden: broken slates or tiles in the garden, gaps along the ridge or loose lead are signs to note. Do not go up yourself.
Thermal roof surveys for homes and businesses in Hendon
A thermal survey is not a quick fix for every roof problem. Sun, shade, reflective surfaces and wind can all change what the camera shows. We back up the images with moisture readings and a careful look at the roof. The report is clear about what the images show and what they do not. If a finding can’t be confirmed, the report suggests a next step. Typical surveys look at missing or slipped insulation and leaks far from where the stain appears, on pitched roof slopes, loft conversions and commercial roofs.
Flying in London takes more checking than most places: there are flight restriction zones around Heathrow, London City and London Heliport, and restricted areas over Hyde Park, the City of London and the Isle of Dogs. Before a drone goes up in Hendon, the address is checked against all of them, and where permission is needed, the flight waits for it.
It is not only a list of defects. For each finding, it explains what it is, why it matters and what we’d recommend, so you can decide what to do next.
- Place
- Hendon (NW4, NW9, NW2, NW11)
- Region
- Greater London
- Cost
- From £400 inc. VAT
- Report
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Cover
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
What we look for on each type of roof
Parapets, valleys and junctions
Problems where roof slopes and walls meet are often hidden. A careful visual inspection goes alongside the images.
Pitched slate and tile roofs
Slate and tile roofs are often harder to read with a thermal camera, because of the air space beneath. We back up what the camera shows with a look in the loft where we can.
Why get it checked now?
For buyers, a thermal survey adds detail that a visual inspection cannot give. Finding hidden moisture before exchange gives you facts to raise with the seller. Many older London roofs have only old felt under the slates, or no underlay at all, so a slipped slate can soon mean water inside. 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. Thermal roof survey starts from £400, including VAT.
Why book us in Hendon
- An independent view of the roof
- Professional indemnity and public liability insurance
- Over 5,000 surveys carried out
- Over 20 years’ experience
Take a look at what a roof survey costs or two real surveys.
Other services in Hendon
Practical tips
A survey works best with a little help from you, before and after. Some tips:
- Keep the heating on as usual before a heat loss survey
- Photograph damp patches with the date
- Keep outlets and gutters clear to stop water sitting
- Leave the roof to people with safe access
We note the weather and surface conditions, and how they may have affected the results. It helps you judge how firm each finding is.
Watch for new damp patches on ceilings beneath the roof. Catching a leak early stops insulation getting soaked.
What this survey can’t tell you
A survey is a close look at the roof, but it cannot do everything. The main limits are:
- Proving moisture from the images alone
- Structural calculations, which need a structural engineer
- An energy rating for the building
If in doubt, phone 07833 053749 or email us and we’ll recommend the right survey. What our survey covers.
Roofs we survey in Hendon
- Insulated roof spaces
- Pitched roof slopes
- Flat roofs
- Ceilings below the roof
- Loft conversions
- Commercial roofs
How it works
Photographs are taken throughout the visit, so you can see in the report what we found and where. We take close-ups from wherever is safe, including by drone where it’s applicable and the weather allows. Most surveys take between one and two hours for a house, and longer for a large or complex roof. In converted houses and mansion blocks, the loft hatch is often on a shared landing. Where that’s the case, access needs agreeing with whoever controls that landing. Everything else is planned around the building, not the postcode.
- First we discuss the roof, any damp and the forecast for the visit.
- We look over the roof from wherever it is safe.
- We take thermal images of the roof and of the loft where we can reach it.
- Patterns that stand out are checked with moisture readings.
- The report pairs each thermal image with a photo and explains what it suggests.
Before we arrive
- Gather any invoices or paperwork from past roof work
- If you’re buying, let the agent know when we are coming
- Clear the way to the loft hatch
Book a survey
Buyers should book once an offer has been accepted, so you have the findings in time to act on them before you exchange. Otherwise, simply ring 07833 053749 or use the contact form whenever suits you.
Related advice
Thermal roof surveys in Hendon: local notes
Where the drone is part of the survey, we check the Drone Safety Map for restrictions before flying. About 2.3 miles east lies Heath Hall, a reminder of how long the area around Hendon has been built on. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead, and a listed home or one in a conservation area may need consent for changes of material.
Hendon is in London, so parking needs planning: a visitor permit or a nearby bay makes the day easier. The streets around a church such as Christ Church Hendon are often among the oldest in a place, and if your home is one of the older ones nearby, thin or patchy insulation under an old roof frequently shows up clearly on a thermal image. Hotels and guest houses near Hendon cannot easily close rooms for a leak, so it’s worth knowing the roof’s condition.
Hendon is about 3 miles north-west of Hampstead, in Greater London. We survey roofs in Hendon across London and South East England. Across Greater London, we cover Hendon and the places around it. You can also see our page for London.
Thermal roof surveys in NW4, NW9, NW2 and NW11 are booked the same way as anywhere else. You’ll find streets such as Church Road, Station Road and Sydney Grove. You will find Hendon on the A5 and A41, which makes it simple to reach. Other places close to Hendon include 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). Within a short drive, we also cover 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).
Local landmarks in Hendon
In Hendon, that means homes and buildings near Hasmonean Primary School, The White Bear pub and Kisharon College. The closest station to Hendon is Hendon station, roughly 0.7 miles south-west of the centre. Well-known places in the area include Brent Cross Shopping Centre (0.5 miles south) and St Andrew's Hospital (1.6 miles south). For a walk, there’s Darland's Lake and Parliament Hill.
Hendon questions
Is drone flying allowed in Hendon?
The answer turns on the exact location and the conditions on the day. Across London there are restriction zones around Heathrow, London City and London Heliport, plus restricted areas over Hyde Park, the City of London and the Isle of Dogs. Each address is checked against all of them before the drone goes up. Every flight is checked against the Drone Safety Map first. A small drone can’t fly safely in strong wind or a downpour, though the rest of the survey goes ahead either way.
Is parking a problem for a survey in Hendon?
Parking in Hendon, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
How long does the survey take?
Time on site depends on the roof, but most surveys take between one and two hours at a house, including the thermal images, and around 3–4 hours for a commercial roof. The report is sent afterwards by email.
Are you insured?
Our cover is professional indemnity plus public liability.
Can you give me structural calculations?
No. We note visible signs such as sagging or deflection, but we are not structural engineers and do not carry out calculations. Where an engineer is needed, we say so in the report.
What does the report include?
It sets out what we found, why it matters and what we recommend, with photos throughout. It also says if any part of the roof couldn’t be seen safely.
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 applicable.