At the Château de Sully-sur-Loire (Loiret), this week, it's the big clean-up, and a drone is tackling it... Facing the keep, directly above the moat, the machine is in full work.
Equipped with a spray boom connected by a long hose to a ground pump, he sprays product onto one of the walls of the venerable building, devoured by lichens and mold which proliferate with humidity.
A few meters away, at the foot of the castle, Didier Dardeau controls the maneuver.
A few months ago, he created his company, 1001 Solutions, located in Courbevoie in the Paris region and Thimery in the Loiret after twenty years working in the construction sector.
Five to six weeks to see results
“I discovered this innovative technique and started piloting a drone.
I trained for six months, it's quite technical but it's a great tool!
», Explains the entrepreneur, who notably cleaned the Porte de Versailles sports center in Paris.
The big advantage of this solution is to allow intervention in sites that are difficult to access, as is the case for this wall, and to avoid having to install scaffolding, with all the risks associated with it. .
Read also Be careful, major SNCF projects: Loiret users are not at the end of their troubles
As for the products used, they respect natural environments, and have been validated by the regional environmental department which required taking into account the presence of water nearby.
You will then have to wait five to six weeks to see the first results.
This first operation has a test value, with a view to a large roof moss removal operation.
The Loiret department, owner of the castle, has just launched a call for tenders to find the right service provider and Didier Dardeau's company will of course be a candidate.