Greater London · London and the South East
Thermal imaging roof survey in St Johns, Greater London
An experienced roof surveyor for thermal roof surveys in St Johns. Over 5,000 surveys and 20+ years behind us.
- Leaks far from where the stain appears
- Ceilings that feel colder in places
- Patches of heat loss across the roof
About our thermal roof survey in St Johns
Thermal imaging is part of our Premium Survey, which starts from £400. It also includes a drone inspection where it applies, a structural analysis and a same-day report. There is an in-person consultation as well, plus a follow-up 12 months later. You can phone 07833 053749 or use the contact form with the address and a note of what you’ve noticed. For big commercial roofs, we quote on size and access. Typical surveys look at leaks that are hard to trace and damp where roofs meet walls and chimneys, on commercial roofs, loft conversions and flat roofs.
London’s roofs are often hard to see from the street: butterfly roofs behind parapets, dormer tops and flat roofs over back additions. Drone photos and thermal images can show parts of a roof that are hard to reach safely. The weather decides the day: both drones and thermal cameras need the right conditions. Thermal images show surface temperature, not water itself, so findings are checked with moisture readings.
The written findings come by email, easy to pass on to a roofer, an agent or an insurer. Basic reports come within 48 hours, Standard within 24–48 hours and Premium on the day.
- Location
- St Johns (SE13, SE10, SE8)
- Wider area
- Greater London
- Cost
- From £400 inc. VAT
- Reports
- A written report with photos, by email
- Appointments
- Monday to Sunday, daytime
- Insurance
- Professional indemnity and public liability
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Leave it or get it looked at?
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. In St Johns, as in much of London, water from a roof defect can reach a neighbour’s home as easily as yours: failed flashings and blocked valley gutters can send water into more than one home. Dealing with it early is far less disruptive.
Larger roofs, taller buildings and commercial roofs take longer, so the price reflects that. You will know the figure before booking.
Why choose Independent Roof Survey in St Johns
- An independent look at the roof
- We hold a CAA Flyer ID and Operator ID
- Two decades and more of roof surveys
- Package prices that include VAT
Useful tips for St Johns property owners
A few practical points come up again and again on our surveys. They apply to most roofs:
- Keep a record of when stains appear
- Keep the heating on as usual before a heat loss survey
- File the images with your roof records
- Take photos of stains as they appear, so we can compare
If you are buying, the report gives you specific points to raise with the seller or agent. What you do with it is up to you, whether that is asking for work or discussing the price.
Watch for new damp patches on ceilings beneath the roof. Early action keeps insulation from staying wet.
Also in St Johns
Can I check my roof myself?
If you have a loft with safe access, take a look inside. Take a torch and only step on boards or joists, checking for stains, damp wood or chinks of daylight.
Keep a simple record: when leaks happen, ground-level photos and any past roof work. Send it with your enquiry, as it helps us focus the survey.
When you need someone else
To be straight with you, there are limits to any roof survey:
- Proving moisture from the images alone
- What’s inside walls or under coverings, without opening up
- A formal energy assessment
If in doubt, phone 07833 053749 or send us an email and we’ll suggest the right survey. What our survey covers.
What this survey covers
- Loft conversions
- Ceilings below the roof
- Insulated roof spaces
- Commercial roofs
- Pitched roof slopes
- Flat roofs
Common questions in St Johns
Is drone flying allowed in St Johns?
Typically it comes down to two things: the airspace at the address and the weather. St Johns is about 2 miles from the edge of the flight restriction zone around London City Airport. The exact boundary is checked for each address before any flight, and a roof inside it needs permission before we fly. 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. Every London address is checked against them before a flight. A small drone cannot fly safely in high wind or heavy rain, though the rest of the survey goes ahead either way.
Is my home in St Johns listed or in a conservation area?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. The answer matters most when a change of material is on the cards.
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’s the best way to book?
Just call 07833 053749 or drop us an email with the address. After a few questions, we confirm the price and fix a day.
Does the report include photos?
Yes. The report includes photographs of what we found.
How does a thermal imaging roof survey work?
The camera records how the surface temperature varies. Those patterns can point to trapped moisture, missing insulation or heat loss. We check what it shows with moisture readings.
Do you work in St Johns?
Yes. We survey roofs in St Johns and the rest of Greater London. For a price, ring 07833 053749 or email us.
For landlords and managing agents
Surveys can also be booked by buyers’ agents acting for a client. The report is emailed, so it can go straight to your client.
Businesses and commercial landlords can book us too, including offices, shops and units. Larger roofs take longer, and they’re priced for the size.
What a thermal roof survey looks like in St Johns
Many homes in inner London are Victorian and Edwardian terraces, frequently with Welsh slate roofs. A butterfly roof with a central valley gutter, tucked behind a parapet wall, is common on these houses. If your home in St Johns is one of them, lead flashings, party-wall upstands and shared chimney stacks are part of the picture too. A drone or thermal camera adds most on the steep, tall and hidden parts of roofs like these. Historic houses such as Queen's House, about 1.1 miles north-east, show how far back building in the area around St Johns goes. 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 the council can say whether a home is in a conservation area.
Anyone responsible for a site like Ashmead Primary School will know that thermal images can show where wet insulation sits under a big flat roof. For hotels and guest houses around St Johns, a roof problem found early is far less disruptive than one found by a guest, so it’s worth knowing the roof’s condition. For a London address like St Johns, it is useful to know about controlled parking before the day, along with any off-street space.
St Johns is about 4 miles south-east of London, in Greater London. We carry out thermal roof surveys in St Johns for houses, flats, blocks and commercial buildings, with a written report and photographs every time. Our area takes in places right across Greater London.
All of SE13, SE10 and SE8 is within our area for thermal roof surveys, from the main roads to the quietest streets. Local streets include Avon Road, Mill Lane and Clare Road. With the A2210 and A2211 close by, St Johns is easy for us to reach. We also cover the places around St Johns: New Cross (1 mile west), Deptford (1 mile north), Lewisham (1 mile south-east), Telegraph Hill (1 mile west) and Ladywell (1 mile south). Within a short drive, we also cover London (4 miles north-west), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (8 miles west), St Pancras (6 miles north-west) and Shoreditch (5 miles north-west).
What’s near St Johns
We work in homes and buildings around Wickham Arms, Brookmill Park and Addey and Stanhope School and the streets around them. Also close by are St. Paul's (0.7 miles north) and Laban Centre (0.8 miles north). St Johns has its own railway station: St Johns station. A little further out are Fan Museum (0.9 miles north-east) and Lewisham Shopping Centre (0.7 miles south-east). Not far away are Brookmill Road Local Nature Reserve and Tower Hill.
How the survey works
The aim of the visit is simple: to see as much of the roof as can safely be seen and record it clearly. Notes and photographs go into the written report. The visit usually takes roughly 1–2 hours at most homes; commercial roofs usually need 3–4 hours. In St Johns, as in much of London, a good many properties are flats or terraces without side access, so the back of the roof is often seen from upstairs windows, from inside or, where a flight is allowed, from the air. If the building has a managing agent or access rules, let us know when booking.
- First we go over the roof, the problem you’ve noticed and the conditions forecast for the visit.
- We carry out a visual inspection of the roof from wherever it can be seen safely.
- Thermal images are taken to show differences in surface temperature.
- We check the patterns that stand out with moisture readings where there’s safe access.
- We write up the thermal images alongside ordinary photos and recommendations.
How to prepare
- Leave side gates unlocked
- Let us know about parking near the property
- Check pets are kept safely away
Book a survey
Getting a price is simple: just call 07833 053749 or drop us an email, tell us about the property and we will explain which survey suits. The price is agreed up front.