Drone roof inspection: the method that replaces the aerial lift

Aerial lift, scaffolding or drone: compared

All three answer the same question: the actual condition of the roof covering. They do not ask for the same logistics, or the same lead time.

A lift needs clear access. A truck, a stable setup area, sometimes a street occupancy permit. On a narrow Brussels street, that takes planning.

Scaffolding stays up longer. It earns its place when repair work follows the survey. For a simple record of condition, erecting and striking it weighs heavy.

A drone needs a take-off spot and open sky. The pilot stays on the ground. Nobody walks on the covering.

• Lift: direct access to the spot observed, but ground footprint and heavy logistics.
• Scaffolding: static and durable, sensible when work follows straight away.
• Drone: quick to set up, no contact with the covering, immediate overview.
• Lift and scaffolding: an operator climbs, so a fall risk to manage.
• Drone: the risk moves to the flight, the weather and the airspace.

What the rules say, on both sides

In Belgium, work at height follows the Royal Decree of 31 August 2005. A risk assessment comes before any choice of equipment.

The text puts collective protection first. A ladder serves as a workstation only when the risk stays low and the job stays short.

The means of access depends on how often people move up and down, the height to reach and how long the work lasts. A ten-minute check and a three-week site differ.

For drones the rule is an aviation one. Implementing Regulation (EU) 2019/947 frames the flight. In the open category, height stays capped at 120 metres above the take-off point.

Brussels sits under UAS geographical zones. The official Droneguide map shows them. Flying inside the controlled zone needs clearance from skeyes.

How a drone inspection runs

It starts before the flight. The address goes through the geozone map. Where the zone requires it, an access request goes to skeyes.

The owner or the building manager signs off in writing. The weather picks the slot. Strong wind or rain: the visit moves.

On site the flight stays slow and close. The drone tracks each pitch, then drops onto the sensitive points. Every zone gets several frames, from several angles.

Sorting follows the same order as the flight. The delivered file reads zone by zone, with no hunting.

• Geozone check and, where needed, an access request.
• Written agreement from the owner, the syndic or the building manager.
• Survey of the take-off area and of anyone standing below.
• Overview flight: the facades, then each roof pitch.
• Detail flight: ridge, verges, valleys, flashings, chimney stacks, gutters.
• Delivery of a photo file sorted by zone, with the original files.

What a drone sees, and what it misses

The vertical view shows surface condition. Shifted tiles, broken slates, moss, a torn membrane, a blocked outlet.

A tele lens keeps the aircraft at a distance. Detail arrives without closing in on the covering. Contact risk drops accordingly.

A drone opens nothing. The waterproofing under the covering, the insulation, the sarking and the timber frame stay invisible from above.

A leak is rarely readable at its source. Water travels before it drops. The entry point can sit far from the ceiling stain.

Dated photos for your insurer

Every image carries Exif metadata. Capture date and time, camera model, settings, often the GPS position.

That marking places damage in time. Before the storm, after the storm: the difference is documented rather than recounted.

The Belgian Insurance Act of 4 April 2014 asks that a claim be reported as soon as possible. A photo file already prepared saves days.

A survey taken outside any claim works as a baseline. The starting condition is on record. The discussion runs on dated material, not memory.

• Original files kept, metadata untouched.
• Sorted by roof zone, with visual landmarks.
• Annotated version on request, to point at the spots observed.
• Delivered through a download link, in common formats.

Visual survey vs diagnosis: the roofer's role

DroneBXL produces a photo survey. Not a roofer’s report, not a binding technical opinion. The distinction matters.

A diagnosis carries liability. It assumes physical access, sometimes a probe, a reading of the layers under the surface.

The roofer or the loss adjuster reads the images, then decides. Climb or not. Open up or not. Repair or replace.

The survey cuts out pointless climbs. The tradesperson knows where to look before unpacking any gear.

• DroneBXL survey: dated images, full coverage, sorted by zone.
• Roofer: technical reading, probable cause, repair method.
• Loss adjuster: classifying the claim and valuing the damage.
• Architect or syndic: decision and scheduling of the works.

When to book a flight

For a flat roof, Buildwise advises maintenance at least twice a year. An inspection comes round at least once a year.

The useful moments repeat every year. After winter, after leaf fall, after a serious blow of wind.

A flight before works holds its value too. The starting condition is on record. Client and contractor look at the same image.

In Brussels and across Belgium, DroneBXL flies with the manager’s agreement and, where the zone requires it, with clearance from skeyes.