Greater London · London and the South East
Longlands Thermal Roof Survey
Know where you stand with the roof before you decide what to do next. We carry out thermal roof surveys in Longlands, with photographs and a clear written report.
- Areas of a flat roof that may hold water
- Stains that keep coming back
- Areas losing heat at the eaves and junctions
What we cannot see
Every survey has limits, and we’d rather be clear about that before you book. Keep these in mind:
- Proving moisture from the images alone
- A structural engineer’s assessment
- A formal energy assessment
If you’re not sure which survey you need, ring 07833 053749 or send us an email and we will give you a straight answer before booking. The full list of what we check.
Roof types and parts we check
- Flat roofs
- Ceilings below the roof
- Commercial roofs
- Loft conversions
- Insulated roof spaces
- Pitched roof slopes
About our thermal roof survey in Longlands
Thermal imaging is useful when a damp patch has no clear cause. Leaks often run along a roof before they appear on a ceiling, and temperature patterns can help us trace where it may have come from. The images are used alongside a visual inspection and moisture readings, so no conclusion rests on one method alone. If you’ve noticed wet areas near outlets and upstands and wet insulation beneath the membrane, we can find out what’s behind it.
Many London roofs are hidden from the pavement: valley gutters behind parapets, dormers and flat-roofed rear 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. What a thermal image shows is temperature, so anything that looks like moisture is checked with a meter.
The report records the roof as we found it on the day. It’s useful straight away, and a good reference for later.
- Place
- Longlands (DA15, DA14, SE9)
- Region
- Greater London
- Cost
- From £400 inc. VAT
- Your report
- Emailed report with photos and recommendations
- Appointments
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Updated
- 27 October 2026
Also near Longlands
Other services in Longlands
Surveys for landlords and agents in Longlands
Letting agents frequently book on a landlord’s behalf, and the report can go to both. We agree a time with the tenant beforehand.
We survey roofs for letting agents and landlords as well as householders. The report gives you a dated record of the roof, with photographs, which helps you plan work between tenancies.
The survey, step by step
We’ll ask a few questions first, about the roof’s history, any leaks and past repairs. The inspection then takes an hour or two on an ordinary house, with bigger or more complicated roofs taking longer. From the street, a London terrace typically shows only its front slope or parapet, so a visit in Longlands moves between viewpoints: the pavement, upstairs windows, the loft and any safe spot at the back. Shared stairs or a basement flat? Let us know who holds the keys.
- First we discuss the roof, any damp and the forecast for the visit.
- The roof is inspected visually from safe positions.
- Thermal images are taken across the roof and, where there’s safe access, in the loft.
- Patterns that stand out are checked with moisture readings.
- The report pairs each thermal image with a photo and explains what it suggests.
Before the survey
- Gather any invoices or paperwork from past roof work
- Point out any leaks or damp patches
- Clear the way to the loft hatch
Booking a survey
For a price for thermal roof surveys in Longlands, phone 07833 053749 or drop us an email. The address, the type of property and what you’d like to know help us give you an accurate price.
Related advice
Airspace, weather and Longlands roofs
If the drone is used for your survey, the flight is checked against the Drone Safety Map first. In outer London, interwar semis with hipped, tiled roofs sit alongside older slate-roofed terraces. On a semi of that age, the small roofs over the bays, the hip tiles and any later dormer each need their own look. Older coverings on steep or tall roofs are hard to judge from below, so close-up close-up aerial shots and thermal images help.
Eltham Palace, about 2 miles north-west, is one of the historic houses in the wider area around Longlands. Close-up aerial shots and thermal images let an old roof be checked without anyone disturbing it. For a London address like Longlands, it helps to know about controlled parking before the day, along with any off-street space.
Longlands is about 1 mile west of Sidcup, in Greater London. We carry out thermal roof surveys in Longlands for houses, flats, blocks and commercial buildings, with a written report and photographs every time. We cover towns and villages across Greater London, large and small. You can also see our page for London.
We work across the DA15, DA14 and SE9 postcode area for thermal roof surveys and the streets around it. If you need a thermal roof survey at a property on Main Road, Alder Road and Sidcup Road or anywhere close by, we can help. You’ll find Longlands on the A211, so it is easy for us to get to. We also cover Foxbury (1 mile south), New Eltham (1 mile north-west), Chislehurst (1 mile south-west), Coldharbour (1 mile west) and Blackfen (1 mile north). Within a short drive, we also cover London (9 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (13 miles west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
Landmarks near Longlands
In Longlands, that means homes and buildings near Waring Park, Chislehurst School for Girls and Ye Olde Black Horse Inn and the streets around them. The nearest railway station is New Eltham station, about 0.8 miles north-west of the centre. Nearby you’ll also find Queen Mary's Hospital (1 mile south-east) and Greenwich Castle (5 miles north-west). Green spaces nearby include Summer Hill and The Tarn.
Before and after the survey
You do not need to be a roofer to help. Here’s what helps most:
- Keep outlets and gutters clear to stop water sitting
- Tell us where and when you’ve seen damp or stains
- Leave the roof to people with safe access
- Remember the conditions on the day affect the results
Where a pattern can’t be confirmed, the report says what could help, such as electronic leak detection or opening up a small area.
Have small defects in the covering fixed early. Once water gets under a membrane, it can travel far before it appears inside.
What you can safely check yourself
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.
It helps to keep a record: dates of leaks, photos from ground level and any work done on the roof. Share it with us when you book, as it helps us focus the survey.
FAQs for Longlands
Will parking be an issue for a roof survey in Longlands?
Sometimes, yes. Where there are permit zones, a visitor permit or nearby pay-and-display bay works well.
Is drone flying allowed in Longlands?
The answer turns on the exact location and the conditions on the day. 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. Every London address is checked against them before a flight. Every flight is checked against the Drone Safety Map first, including zones around airports and prisons. Strong wind or heavy rain also stops a small drone flying, though the rest of the survey goes ahead either way.
Is thermal imaging included in your surveys?
It comes with our Premium Survey, which starts from £400. The Premium Survey also covers a full inspection, drone inspection where it applies, structural analysis and a report on the same day.
Do you survey roofs on blocks of flats?
Yes, as long as access is agreed. The roof of a block or converted house is often shared, so the freeholder or managing agent needs to agree access. We can only inspect what we are given access to.
Can a thermal survey trace a roof leak?
It often helps show where to look. Patterns can suggest where trapped water has spread. We combine it with a visual inspection and moisture readings, as the camera alone cannot prove a leak.
How long is the visit?
Expect it to take about 1–2 hours at a house, including the thermal images, and around 3–4 hours for a commercial roof. You’ll then get the report by email.
What’s the best way to book?
Simply call 07833 053749 or email us with the address. After a few questions, we confirm the price and fix a day, weekday or weekend.
Do you need a thermal roof survey in Longlands?
Cold rooms under a roof, or high heating bills, lead some people to ask about heat loss. Missing or slipped insulation can stand out as temperature differences, particularly when there’s a clear difference between inside and outside.
Look out for signs like these:
- Cold spots on ceilings under the roof
- Missing or slipped insulation
- Stains that keep coming back
- Possible trapped moisture under a flat roof covering
If yours is one of the older homes in the streets near Christ Church, thin or patchy insulation under an old roof often shows up clearly on a thermal image.
Before you book any roof surveyor
- How long they’ve been surveying roofs
- What exactly goes into their report
- Whether VAT is added on top
- Their report turnaround times