Greater London · London and the South East
Thermal Roof Survey in Northumberland Heath
Thermal imaging to find moisture and heat loss patterns in a roof around Northumberland Heath, with findings in writing and pictures to back them up. Book a weekday or weekend visit.
- Damp that repairs haven’t cured
- Missing or slipped insulation
- Water getting in at parapets and stacks
Common roof problems in Northumberland Heath
Flat roofs that have leaked for a while can have wet insulation under the covering. Owners want to know how far it has spread before deciding what to do. A thermal survey, checked with moisture readings, can give a much clearer picture.
Most people get in touch when they’ve noticed something like this:
- Patches of heat loss across the roof
- Damp patches with no obvious cause
- Damp where roofs meet walls and chimneys
- Gaps in loft insulation
For site and facilities teams at buildings such as King Henry School, thermal images can show where wet insulation sits under a big flat roof.
Before booking any roof surveyor
- Will the report include photos?
- What follow-up you get after the report
- How much experience they have with roofs like yours
- How they plan to inspect the roof safely
Thermal roof survey in Northumberland Heath: what you get
Thermal imaging can also show where a roof is losing heat. Gaps in loft insulation and poorly insulated areas can stand out on the images. It works best when the building is heated and it is colder outside. The report shows the images and explains what they may mean. It isn’t an energy rating or a heat loss calculation. We survey pitched roof slopes, loft conversions and insulated roof spaces, and the problems we are asked to look at most are damp that repairs haven’t cured and gaps in loft insulation.
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. Every address in Northumberland Heath is checked before any drone flight, and where permission is needed, the flight waits for it.
The report is yours to share with whoever needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent, whichever applies.
- Where
- Northumberland Heath (DA8, DA7)
- Region
- Greater London
- Prices
- From £400 inc. VAT
- Reports
- Written, with photos, emailed to you
- Survey days
- Weekdays and weekends
- Insurance
- Professional indemnity and public liability
- Call
- 07833 053749
- Last updated
- 27 October 2026
Thermal roof surveys around Northumberland Heath
The wider area around Northumberland Heath has a long history of building, with Hall Place and Gardens about 1.8 miles south. Older roofs in the wider area can hide decades of patch repairs, so the detail matters, and the council can say whether a home is in a conservation area. Outer London has a good many Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, frequently 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. Many roofs like these can’t be judged properly from the pavement, and that’s where a view from above or a thermal image earns its place.
Shop and office owners around Broadway Shopping Centre may find that big, flat commercial roofs are where aerial photos and thermal images help most. Northumberland Heath is in London, so parking needs planning: let us know about permits, visitor bays or off-street space as you book.
Northumberland Heath is about 3 miles north-west of Dartford, in Greater London. We survey roofs in Northumberland Heath and the surrounding area across London and South East England. Our area takes in places right across Greater London, from the larger towns to small villages. We also survey roofs in London.
Surveys in DA8 and DA7 are booked the same way as anywhere else. We offer thermal roof surveys to properties on Mill Road, Penda Road and Chalk Road. We also cover the places around Northumberland Heath: Bexley Riverside (1 mile south-east), Erith (1 mile north), Barnehurst (1 mile south), Belvedere (1 mile north-west) and Lessness Heath (1 mile north-west). We also work in nearby towns such as London (11 miles west), City of Westminster (14 miles west), Marylebone (14 miles west), St Pancras (13 miles west), Shoreditch (11 miles west) and Walthamstow (11 miles north-west).
Near you in Northumberland Heath
Typical jobs here are in homes near Trinity School, The Royal Oak pub and Braeburn Park, among other places. For rail, the closest station is Barnehurst station, roughly 0.6 miles south-west of the centre. A little further out are Erith Museum (0.7 miles north-east) and Erith and District Hospital (within half a mile north). Not far away are Crossness Nature Reserve.
Checking the roof from ground level
You can learn a lot from the ground. Binoculars help you spot slipped slates or tiles, gaps along the ridge and a leaning stack. Never climb onto the roof to look.
Inside, the loft is a good place to look, with care. Take a torch and only step on boards or joists, checking for stains, damp wood or chinks of daylight.
Questions from Northumberland Heath
Will parking be an issue for a roof survey in Northumberland Heath?
Normally it’s manageable with a little notice. Let us know the parking rules on your street and we will work around them.
Is drone flying allowed in Northumberland Heath?
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. Before any flight, we check the Drone Safety Map for airspace restrictions. The flight also waits for calm, dry weather.
Will you go up on the roof?
Only if it is safe. We inspect what can safely be seen: from the ground, from windows, from inside the roof space, from the roof where it’s safe and by drone where it applies. Anything we cannot see is noted in the report.
How long does the survey take?
It typically takes between one and two hours at a house, including the thermal images, and around 3–4 hours for a commercial roof. You will then get the report by email.
What can thermal imaging tell me about my roof?
The images show how warm or cool each part of the surface is. Differences can suggest wet areas, missing insulation or heat loss, which we then check with moisture readings.
Is it the same as a RICS Level 2 or Level 3 survey?
No. Our survey is a roof survey, not a RICS Level 2 or Level 3 survey of the whole building. It focuses on the roof and can sit alongside a RICS survey.
Does the weather affect a thermal survey?
Conditions on the day have a big effect on what the camera can show. A dry surface, little wind and a sunny spell beforehand help most. Our report notes the conditions and how they affected the findings.
What affects the cost of thermal roof surveys
Every roof is different, so prices are confirmed before you book. This is what makes a difference:
- Extra roofs, like extensions, dormers or garages
- The shape of the roof and its details
- The use of thermal imaging or a drone
- Which survey package you book
Every price we give includes VAT, and the written report is part of the package. Thermal roof survey starts from £400, including VAT. Size, height and access decide where your roof falls.
Helping us price your survey
Getting the details right at the start saves time. It’s useful to include:
- The address and postcode of the property
- Any stains, drips or damp patches you’ve seen indoors
- Dates you’re working to, like exchange
- Any photos you have, taken from ground level or a window
We confirm the price for the job before you book, so you know where you stand. Thermal roof survey starts from £400, including VAT. For a price for your roof, phone 07833 053749 or drop us an email.
The survey, step by step
When we arrive, we start by asking what you’ve noticed and what you need to know. After that, we check everything we can see safely, using the ground, windows, the loft and a drone where it applies. The survey usually takes between one and two hours for most homes, plus time to check any thermal findings with moisture readings. In Northumberland Heath, as in much of London, lots of 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, tell us as you book.
- We start with the roof, its history and any signs of damp or heat loss.
- We check the conditions and note how they may affect the images.
- We inspect the roof and take thermal images during the same visit.
- We back up the thermal patterns with moisture readings.
- The Premium report reaches you the same day, and we go through it with you in person.
How to prepare
- Note where any stains or damp appear
- Gather any invoices or paperwork from past roof work
- Clear the way to the loft hatch
Booking a survey
Booking is simple: just phone 07833 053749 or use the contact form, tell us about the property and we’ll explain which survey suits. The price is agreed up front.
Related advice
What happens if roof problems are left?
Wet insulation under a flat roof doesn’t dry out on its own while the covering stays on. In time, it stops insulating properly and can damage the deck. Finding them early can mean a smaller job. Blocked gutters and hoppers on London houses overflow and soak brickwork. A blocked outlet ignored for a winter or two can mean damp walls inside.
Thermal imaging and drone inspection (where applicable) come with the Premium Survey, which starts from £400, inc. VAT. We will tell you which package suits the questions you have.
Why us?
- An independent view of the roof
- 98% customer satisfaction
- CAA-registered drone operator (Flyer ID and Operator ID)
- Weekday and weekend surveys
Take a look at what a roof survey costs or our case studies.
What this survey can’t tell you
Without opening up the roof, some things stay hidden, so a survey has limits:
- Confirming water without moisture readings
- Structural calculations, which need a structural engineer
- Clear results when the conditions on the day are poor
If you are not sure which survey you need, call 07833 053749 or use the contact form and we will give you a straight answer. What a survey covers and doesn’t.
Roof types and parts we check
- Insulated roof spaces
- Commercial roofs
- Loft conversions
- Flat roofs
- Pitched roof slopes
- Ceilings below the roof