Drones for pressure washing and cleaning: how they work and the rules

Cleaning drones are real and in commercial use for roofs, building walls, windows, solar panels and wind turbines. Most work the same way: a ground pump and tank feed water or cleaning solution up a hose to a spray nozzle on the drone, so the drone carries the nozzle and hose instead of a heavy tank. DJI doesn't sell its own cleaning drone, but third-party cleaning kits are built around DJI heavy-lift platforms such as the Matrice 400 and FlyCart 30. Any paid cleaning flight in the US needs an FAA Part 107 certificate.

Which FAA path for a cleaning drone? — From the FAA's guidance on operations not covered by Part 107. Paid work at any weight needs a remote pilot. Count everything the aircraft lifts.

How cleaning drones work

Tethered hose: a pump on the ground pushes water or solution through a hose to the drone. The drone holds position and aims the spray. Hose reels manage the line as it climbs.
Soft washing: most roof and wall work uses low-pressure soft washing with a cleaning solution, then a rinse. True high-pressure blasting pushes the drone backward, so it's less common.
Power tether: some systems also send power up a cable so the drone can stay up longer than its batteries allow.
Uses: roofs, siding, high-rise facades, windows, solar arrays, signs, tanks and wind turbine blades.

The pitch is safety and speed: no lifts, scaffolding or rope access for high work.

FAA rules

Part 107. Cleaning for pay is commercial, so the pilot needs a Remote Pilot Certificate and the drone must be registered. See Part 107 explained.

The 55 lb limit. Part 107 covers drones under 55 lb. Industry guidance says to count everything that flies, including the hose and liquid the aircraft lifts. For heavier systems, the FAA says to seek an exemption under 49 U.S.C. 44807. More in Part 107 weight limit.

Waivers. For operations Part 107 doesn't allow, such as flying over people who aren't part of the job, drones under 55 lb can apply for a Part 107 waiver. See Part 107 waivers.

Airspace. Near airports you need authorization through LAANC or FAADroneZone, just like any other flight.

Chemicals. Check your state's rules for the cleaning products you spray, and keep runoff and overspray off people, cars and neighbors' property. Spraying pesticides or crop products is a different activity with its own FAA and state requirements.

Site safety

Cleaning jobs put a drone close to buildings, often over sidewalks and parking lots. Common practices:

Set up a perimeter and keep the public out of the spray and fall zone.
Use a visual observer to watch the hose and people.
Check wind; spray drift and gusts near tall buildings are the main risks.
Get written permission from the property owner and the building manager.

Where standard DJI drones fit

You don't need a cleaning drone to sell cleaning. Many contractors start with a camera drone for the parts before and after the wash:

Quotes: photograph roofs and facades without climbing. See drone roof inspection.
Before and after: proof of results for customers and marketing.
Finding problems: a thermal drone like the Matrice 4T can spot moisture and failing panels. See drone solar panel inspection.

Should you start a drone cleaning business?

It can work, but the costs are real: a heavy-lift drone, a cleaning kit, pumps, insurance, training and Part 107. Talk to the cleaning kit maker about total system weight and FAA status before you buy, and price the liability insurance early. For ideas on getting started, see drone business ideas.

Want help choosing a heavy-lift platform? Call our drone pilots at 1-800-613-6323 or browse our enterprise drones.