Greater London · London and the South East
Thermal imaging roof survey in Dulwich, Greater London
Thermal imaging to find moisture and heat loss patterns in a roof in Dulwich, carried out by an experienced roof surveyor. Every survey comes with a written report and photographs.
- Areas of a flat roof that may hold water
- Moisture around outlets and upstands
- Cold spots on ceilings under the roof
Can I check my roof myself?
Watch the gutters in a downpour, from a window or the ground. Overflowing water can point to a blockage or a sagging run.
It helps to keep a record: dates of leaks, photos from the ground and any work done on the roof. Share it with us as you book and it will help the survey.
How a thermal roof survey works in Dulwich
Thermal imaging can also show where a roof is losing heat. Missing or slipped insulation and gaps at the eaves often show up as temperature differences. The difference shows most clearly when it is warm inside and cold outside. Our report points out what the images suggest and where to look more closely. It is not an energy rating or a heat loss calculation. Common reasons to book are damp around chimneys and parapets and possible trapped moisture under a flat roof covering, on loft conversions, commercial roofs and flat roofs.
London roofs sit shoulder to shoulder in terraces and blocks, so privacy and neighbours matter as much as the view. We take care to focus on the roof we’ve been asked to look at, in Dulwich as anywhere. Mention access, height and anything unusual about the building as you book. Steep slopes, tall chimneys and rear additions are where the extra view helps most.
Most points in the report come with a picture, so you can see each defect rather than just read about it. Anything out of sight on the day is listed as such.
- Place
- Dulwich (SE22, SE21, SE23)
- Region
- Greater London
- Price
- From £400 inc. VAT
- Report
- Written, with photos, emailed to you
- Appointments
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
How the survey changes by roof type
Single-ply and EPDM roofs
Thin membranes can show patterns from the layers beneath. Reflections from shiny surfaces can affect readings, which we allow for.
Felt and asphalt flat roofs
Water under felt or asphalt can stay hidden for years. The camera can give clues to where it’s sitting, when the conditions allow.
Places near Dulwich
Also in Dulwich
Thermal roof surveys around Dulwich
With Kingswood House about 1.1 miles south, Dulwich sits in an area with a long building history. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead. Close to the centre of London, a great many houses are Victorian or Edwardian terraces, many of them roofed in Welsh slate. From the street you may see only a parapet, with a butterfly roof and a valley gutter behind it draining to the back. Shared chimney stacks, party-wall upstands and lead work come with this kind of house. A drone or thermal camera adds most on the steep, tall and hidden parts of roofs like these.
If you look after a building such as St Anthony's Catholic Primary School, thermal images can show where wet insulation sits under a big flat roof. Take an older house close to Christ's Chapel of God's Gift: tall stacks and steep slopes are easier to judge with close-up aerial photos than from the pavement.
Dulwich is about 1 mile south-east of Herne Hill, in Greater London. Houses, flats, blocks and commercial buildings in Dulwich can all book thermal roof surveys, with a written report and photographs every time. Dulwich is one of the towns and villages in Greater London we cover.
Thermal roof surveys in SE22, SE21 and SE23 are booked the same way as anywhere else. That includes homes and businesses on Court Lane, Druce Road and Boxall Road and the roads around them. With the A2216 close by, Dulwich is easy for us to reach. Neighbouring places we cover for thermal roof surveys include Dulwich Village (1 mile north-west), West Dulwich (1 mile south), Herne Hill (1 mile north-west), Sydenham Hill (1 mile south-east) and Forest Hill (1 mile east). Larger places within reach include London (4 miles north), City of Westminster (6 miles north-west), Marylebone (6 miles north-west), Kensington (7 miles north-west), St Pancras (6 miles north) and Shoreditch (6 miles north).
Near you in Dulwich
In Dulwich, that means homes and buildings near The Crown and Greyhound pub, Dulwich Park and Alleyn's School. For rail, the closest station is West Dulwich station, about 0.7 miles south-west. Nearby you’ll also find Dulwich Community Hospital (0.9 miles north) and Greenwich Castle (4 miles north-east). Green spaces nearby include Knight's Hill and Centre for Wildlife Gardening.
FAQs for Dulwich
Can you fly a drone over a roof in Dulwich?
That depends on where the roof is and on 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. Every London address is checked against them before a flight. Before any flight, we check the Drone Safety Map for airspace restrictions. High wind or heavy rain also stops a small drone flying.
How do I find out if my home in Dulwich is listed?
The council and Historic England’s list are the places to check. Either can affect what roof work is allowed, so it’s worth checking before planning any.
Can a thermal survey trace a roof leak?
It can help narrow down where water may be getting in. Water can travel under a covering before it shows inside, and temperature patterns can help follow it. It is used alongside a close inspection and moisture readings, as the camera alone cannot prove a leak.
Does thermal imaging work on slate and tile roofs?
It can be useful, though pitched roofs are usually harder to read. Slates and tiles over a ventilated space can mask what’s below, so we also look from the loft where it is safe.
How long will you be at the property?
Most surveys take about 1–2 hours at a typical home; commercial roofs usually need 3–4 hours. We will confirm the timing when you book.
Will you go up on the roof?
Only when it’s safe. Safe viewpoints, the roof space and a drone where applicable cover most of what’s needed, and anything out of sight is recorded in the report.
Is thermal imaging included in your surveys?
Our Premium Survey, from £400, includes thermal imaging. An in-person consultation and a follow-up 12 months later are included too. Larger commercial roofs are quoted for their size.
Do you need a thermal roof survey in Dulwich?
Some buyers want extra detail before they commit to a purchase. The Premium Survey brings thermal imaging and a drone inspection where it applies, with a report the same day, which helps when timescales are tight.
Here are some of the things we see often:
- Patches of heat loss across the roof
- Damp patches with no obvious cause
- Damp where roofs meet walls and chimneys
- Leaks far from where the stain appears
For businesses in and around places such as Lewisham Shopping Centre, a commercial roof can be photographed from above without anyone walking on it.
Before you book any roof surveyor
- Which parts of the roof they’ll actually see
- What they won’t be able to tell you
- What follow-up you get after the report
- Whether VAT is in the quoted price
Before and after the survey
These tips come from what we see on roofs every week:
- Leave the roof to people with safe access
- Keep a record of when stains appear
- Clear a path to the loft hatch before we arrive
- Don’t switch the heating off before the visit
The report explains the conditions on the day and how they affected the images. That way you know how much weight to give each finding.
Watch for new damp patches on ceilings beneath the roof. Catching a leak early stops insulation getting soaked.
What we do, step by step
The aim of the visit is simple: to look at the roof as closely as is safe and record what we find. Everything we note and photograph goes into the written report. It typically takes an hour or two at a typical home, rising to roughly 3–4 hours on a commercial building. Many London properties are flats or terraces with no side access, so rear slopes are viewed from windows, the loft or, where a flight is allowed, by drone. If the building has a managing agent or access rules, tell us when booking.
- We go through the roof, the problem and the weather expected on the day.
- 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.
- Each image is set beside a normal photo and explained in the report.
Preparing for the visit
- Agree roof access with the managing agent if it is shared
- Jot down any questions you want answered
- Have keys ready for side gates, garages or roof access doors
Book a survey
Most bookings start with a short call: call 07833 053749 or drop us an email, and we’ll ask about the building and what you need. The price is agreed before a date is set.
Related advice
What a thermal roof survey doesn’t cover
Our survey is not a RICS Level 2 or Level 3 survey, a structural engineer’s report or an asbestos survey. Other limits to bear in mind:
- Proving moisture from the images alone
- A formal energy assessment
- Reliable images in rain, strong wind or on a wet roof surface
If you’re not sure which survey you need, ring 07833 053749 or use the contact form and we will give you a straight answer before you book. What our survey covers.
What we look at
- Flat roofs
- Ceilings below the roof
- Pitched roof slopes
- Insulated roof spaces
- Loft conversions
- Commercial roofs