DroneTec UK All articles
Aerial Imaging

Ridge Tiles and Rain Clouds: Capturing Roof Damage That UK Loss Adjusters Will Actually Use

DroneTec UK
Ridge Tiles and Rain Clouds: Capturing Roof Damage That UK Loss Adjusters Will Actually Use

Photo: Jwslubbock, CC BY-SA 4.0, via Wikimedia Commons

After a named storm rolls through, the phone starts ringing. A slipped ridge tile, a blocked gutter, a dented flashing collar or a cracked skylight can all be awkward to see from the ground, and scaffolding is expensive. A drone is an obvious tool for the job, but the evidence package matters as much as the flight. Loss adjusters do not need a cinematic orbit. They need to know what was photographed, where it was, when it was taken and whether the image has been messed about with.

Before the first launch: permissions and paperwork

Start with the property owner. A roof inspection over a private house or commercial building needs the owner's consent, and if you are taking off or standing on neighbouring land you need that landowner's permission too. If you are being paid for the work, make sure your CAA framework and insurance are in order. Most roof surveys can sit within the Open Category if you keep your distance from uninvolved people, but close work near a street or a busy yard may push you into Specific Category territory. If you are not sure, do not launch and hope.

Check airspace, temporary restrictions and NOTAMs as you would for any commercial flight. Airport frangible zones, prison sites, military areas and event restrictions all matter. Also check local byelaws and any site rules for the estate or business park. Then think about data protection. UK GDPR still applies to images of identifiable people, and a roof survey can easily catch a neighbour's window, a child in a garden or a number plate in the drive. You do not need to be a lawyer, but you do need a reason to collect the images and a plan to minimise the personal data you keep.

Plan the flight as a survey, not a photo shoot

Sketch the roof before you take off. Mark the ridgeline, valleys, chimneys, rooflights, gutters, downpipes and any areas the client has flagged. Check the sun direction and avoid deep shadow across the damage. Flat, bright overcast is often better than hard midday sun, and a day after the rain has passed is better than a day during it. Wind is the obvious limit, but cold can also shorten battery life and change how the aircraft handles.

Fly a consistent altitude for the wide coverage and keep the camera in a fixed orientation where possible. A simple grid pattern with plenty of overlap is easier to trust than a few artistic obliques. For the main roof planes, aim for around 70 percent forward overlap and 60 percent side overlap. That gives the loss adjuster context and gives you room to crop. Shoot RAW if your aircraft supports it, bracket exposure when the sky is bright, and keep the originals. Do not rely on a JPEG that has been through three messaging apps.

The wide-to-close ladder

Build the set in layers. First, an establishing wide shot that shows the property, the roofline and enough surrounding context to orient the reader. Then oblique elevations from two or three sides, so the adjuster can see how the roof sits against the walls and neighbouring structures. Then overlapping roof-plane shots, followed by close-ups of the specific defects: lifted ridge tiles, displaced flashing, blocked gutters, cracked glazing, damaged vents and any ponding or debris.

Close-ups need a reference point. A tight shot of a cracked tile is much more useful if the previous frame shows where that tile sits on the roof. Where it is safe and lawful to do so, include a frame with a known feature in view, such as a chimney stack or a valley line. Avoid flying close over people or busy public areas just to get a tighter detail. If the shot cannot be taken safely, note it as a limitation rather than pretending the roof has no unseen issues.

Metadata that survives the handover

Keep the EXIF data, GPS position, timestamp, altitude, heading and camera settings with the original files. Export a flight log and note the aircraft and payload used. Name the files with the claim reference, property address or site name, date and a sequence number. A folder of images called DJI_0042 is not an evidence package. A folder called 2026-10-14_Claim-8821_Roof-North is a start.

Do not strip metadata from the originals. If you need to annotate or resize images for a report, keep the untouched originals separately and say clearly which is which. A short contact sheet with numbered frames and a matching index is worth more than a glossy video. If your workflow supports it, record a hash or at least a clear chain-of-custody note showing when the files were copied and who handled them.

Privacy masking without wrecking the evidence

Mask what does not belong to the claim. Blur or crop neighbouring windows, people, vehicles and private gardens where they are not relevant. Do not blur the damaged roof itself. Keep the unredacted originals in a secure store with restricted access, and release only the masked versions to the client or adjuster unless there is a clear need for the full frame. Use a secure transfer link rather than a public gallery, and set an expiry date. If the client wants to share the images with a contractor, give them a version that has already been minimised.

The handover package a loss adjuster can use

A good package is short and indexed. Start with a one-page summary: property, claim reference, date and time of flight, weather, aircraft, pilot, purpose and any limitations. Follow with the establishing shots, the elevation set, the roof-plane coverage and the defect close-ups, each numbered and captioned. Add an annotated PDF showing the approximate position of each defect on a roof plan or a marked-up wide image. Include the originals through a secure link, not as email attachments.

Describe what you see rather than diagnosing the cause. 'Lifted ridge tile with exposed mortar' is useful. 'Storm damage caused by poor workmanship' is not your call. If an area was not visible, say so. If the light was poor, say so. Loss adjusters deal with uncertainty all day; what they dislike is a package that looks confident but cannot be checked.

The permissions that matter before the first launch

The short version: property owner consent, take-off and landing permission, CAA airspace and NOTAM checks, insurance, the right operational category, and a data protection plan. Add any site-specific permits for estates, universities, hospitals or commercial yards. Do this before the drone is out of the case. Once the images are on the card, the easy part is flying. The hard part is making them useful to someone who was not there.

All Articles

Related Articles

The Sensible £500 Flight Bag: A UK Drone Kit That Plays by the Rules

The Sensible £500 Flight Bag: A UK Drone Kit That Plays by the Rules

Grey Skies, Stiff Gusts: A Wet-Weather Drone Workflow for the UK

Grey Skies, Stiff Gusts: A Wet-Weather Drone Workflow for the UK

Village Hall, Meet Rotor Wash: A Pilot's Guide to Keeping Drone Noise Off the Agenda

Village Hall, Meet Rotor Wash: A Pilot's Guide to Keeping Drone Noise Off the Agenda