Greater London · London and the South East
Thermal imaging roof survey in Greenhill, Greater London
Thermal roof surveys across Greenhill, with over 20 years’ experience behind it. Every survey ends with a written report and photographs.
- Damp where roofs meet walls and chimneys
- Damp around roof outlets and upstands
- Ceilings that feel colder in places
How a thermal roof survey works in Greenhill
Our thermal survey records how the surface temperature varies across your roof. Those patterns can point to trapped moisture, missing insulation or heat escaping. The camera does not see water itself, so findings are checked with moisture readings. It comes as part of our Premium Survey, from £400. Conditions on the day affect the results, and the report explains how. We survey commercial roofs, insulated roof spaces and flat roofs, and the problems we are asked to look at most are areas losing heat at the eaves and junctions and stains that keep coming back.
Flying in London takes more checking than most places: restriction zones surround Heathrow, London City Airport and London Heliport, and Hyde Park, the City of London and the Isle of Dogs have restricted areas of their own. Every address in Greenhill is checked before any drone flight, and where permission is needed, the flight waits for it.
We write the report in plain English, so it makes sense without any roofing background. Each point is backed by a photo where possible.
- Location
- Greenhill (HA1, HA3, HA2)
- Wider area
- Greater London
- Cost
- From £400 inc. VAT
- Report
- A written report with photos, by email
- When we survey
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Telephone
- 07833 053749
- Last updated
- 27 October 2026
Why it’s worth a survey now in Greenhill
Thermal images can suggest the extent of wet areas without cutting into the roof. It helps when deciding whether to patch an area or replace the roof. In Greenhill, as across London, an overflowing gutter soaks the wall below, which can lead to damp inside. A small blockage left for a few winters becomes a damp problem.
Prices start from £150, including VAT, for a Basic Survey. Standard is from £250 and Premium from £400, both inc. VAT. You’ll know the exact price before booking.
Why book with us
- Drone and thermal imaging surveys available
- CAA-registered drone operator (Flyer ID and Operator ID)
- 5,000+ surveys completed
- Surveys on weekdays, Saturdays and Sundays
See our cost guide or our case studies.
Towns and villages near Greenhill
Other services in Greenhill
For landlords and managing agents
Managing agents and residents’ management companies use roof surveys to plan maintenance. The report sets out what needs attention now and what can wait, which helps when budgeting.
Any of our surveys can be booked by landlords, agents and building managers in Greenhill. To discuss a property or a block, call 07833 053749 or email us.
How the survey changes by roof type
Felt and asphalt flat roofs
Felt and asphalt sit tight to the layers below, which often helps the camera pick up differences. We confirm any patterns with moisture readings.
Loft insulation
From inside the loft, thermal imaging can show gaps in insulation and cold spots. We inspect the loft where it can be reached safely.
Your questions about thermal roof surveys in Greenhill
Will parking be an issue for a roof survey in Greenhill?
It depends on the street. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well, and a driveway is even better.
Can you fly a drone over a roof in Greenhill?
Normally it comes down to two things: the airspace at the address and the weather. London’s airspace includes flight restriction zones around Heathrow, London City Airport and London Heliport, and 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. Before any flight, we check the Drone Safety Map for airspace restrictions, including zones around airports and prisons. The flight also waits for calm, dry weather, though the rest of the survey goes ahead either way.
Will you go up on the roof?
Only when it’s safe. Some roofs are too steep or fragile to walk on safely. We use safe viewpoints, the roof space and a drone where it applies, and the report records anything we couldn’t see.
Can you tell me if my roof has asbestos?
No. We can flag materials that might contain asbestos, but confirming it is a job for a specialist asbestos surveyor. Buildings built or refurbished before 2000 may contain it.
Which survey includes thermal imaging?
It is part of the Premium Survey, from £400. You also get an in-person consultation and a 12-month follow-up. For bigger commercial roofs, we quote on size.
When does the report arrive?
Each package has its own report time. Basic is within 48 hours, Standard is 24–48 hours and Premium is the same day. Mention any deadline as you book.
How does a thermal imaging roof survey work?
The camera records how the surface temperature varies. The patterns can suggest wet insulation, gaps in insulation or heat escaping. Findings are checked with moisture readings.
Drones, thermal imaging and Greenhill roofs
Outer London has lots 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. Steep or complicated roofs are often hard to see from ground level, which is where aerial photos and thermal images help. About 1.1 miles north-west lies Headstone Manor, a reminder of how long the area around Greenhill has been built on. If your house is among the older ones, expect a mix of original materials and later repairs on the roof.
For a London address like Greenhill, it helps to know about controlled parking before the day, along with any off-street space. Take a building like Saint Jerome Church of England Bilingual School: big roofs are where aerial photos and thermal images show the most at once.
Greenhill is about 1 mile north-east of Harrow, in Greater London. In Greenhill, as across Greater London, every roof gets the same careful survey. Across Greater London, we cover Greenhill and the places around it. Our London page covers surveys nearby.
Thermal roof surveys in HA1, HA3 and HA2 work the same way as everywhere else we cover. If you need a thermal roof survey at a property on Lyon Road, Hill Road and Byron Road or a nearby road, we can help. We also cover the places around Greenhill: Wealdstone (1 mile north), Northwick Park (1 mile south-east), Harrow (1 mile south-west), Kenton (1 mile east) and Roxeth (1 mile south-west). Larger places within reach include London (12 miles south-east), City of Westminster (9 miles south-east), Marylebone (9 miles south-east), Kensington (8 miles south-east), St Pancras (10 miles south-east) and Shoreditch (12 miles east).
Around Greenhill
We work in homes and buildings around Royal Oak pub, Northwick Park and Harrow High School. There’s a railway station in Greenhill itself: Harrow-on-the-Hill station. Well-known places in the area include St. Anns (within half a mile south-west) and Hilfield Castle (4.8 miles north). For a walk, there’s Masons Field and Northala Fields.
Common roof problems in Greenhill
Once a leak has been fixed, people often ask whether the roof is still wet. A thermal survey with moisture readings can show whether wet areas remain, given suitable conditions on the day.
Common reasons to book include:
- Stains that keep coming back
- Thin or uneven insulation in the roof
- Wet areas near outlets and upstands
- Heat escaping through the roof
If you look after a shop, office or commercial unit, for example near St. Anns, large commercial roofs are often easiest to see from above or with a thermal imager.
Before you book any roof surveyor
- How they plan to inspect the roof safely
- Whether the inside of the roof is included
- Their report turnaround times
- Whether VAT is in the quoted price
What happens on the day
Time on site depends on the size and shape of the roof, but as a rough guide the survey takes roughly 1–2 hours for most homes, plus time to check any thermal findings with moisture readings. If you have questions on the day, just ask. For a visit in Greenhill, parking and access are the things to plan: let us know about parking, the floor the property is on, any shared entrance and loft access. On the day, the roof is looked at from ground level, from windows, from inside the roof space and from the roof where it is safe.
- First we go over the roof, the problem you’ve noticed and the conditions forecast for the visit.
- We look at the roof from ground level, from windows and from the roof itself where it is safe.
- Thermal images are taken to show differences in surface temperature.
- Areas that look unusual on the camera are checked with moisture readings where possible.
- We write up the thermal images alongside ordinary photos and recommendations.
Preparing for the visit
- Tell us about parking before the day
- Have any questions written down, so nothing gets missed
- If you are buying, check with the agent that we can get in
Book a survey
Booking is simple: just ring 07833 053749 or send us an email, let us know about the property and we will explain which survey suits. The price is agreed up front.
Related advice
Checking the roof from the ground
If you have a loft with safe access, take a look inside. Use a torch and stay on the joists or boards, checking for stains, damp wood or chinks of daylight.
After strong wind, take a look from the pavement or garden: pieces of tile or slate on the ground, a gap in the ridge or a lifted flashing are all worth noting. Leave anything above ground level to a survey.