Founding of Entreprises Iris, an industrial painting company, formerly a division of GAZELEC (gas and electricity distribution company).

Iris becomes a family holding company under the management of Michel JANSSENS van der MAELEN. 

Establishment of Belgian Business Services (BBS), an administrative management holding company.

Establishment of Iris Cleaning Services with 20 employees and 800 workers.

Patrick JANSSENS van der MAELEN succeeded his father and took over the management.

IRIS Cleaning Services receives ISO 9002 certificate.

Partnership and co-founding of European Customer Services (ECS) in the cleaning sector.

Establishment of Iris Greencare, green care.

Expansion of services in Cleaning with the acquisition of Alcyon.

Iris Cleaning signs the prestigious contract for the European Commission and recruits more than 750 workers. Acquisition of Actief Cleaning.

Iris Group reached 3,000 employees.

Diversification of Cleaning into the healthcare sector with the Chirec group.

CO2 performance ladder level 3 CSR certification for the group.

Iris Anticorrosion won the Maeslantkering (NL) contract.

Iris Building launched its Handyman Services activity.
Iris Anticorrosion was awarded level 4 CO2 Performance Ladder certification.

Establishment of Iris Facility.

70th anniversary of the Iris group.

Iris Cleaning Services opens an office in Visé (Liège).

Iris Cleaning Services Lummen moves to a new office.

The company name of Iris NV changes to Iris Industry Solutions NV and Iris Cleaning Services NV to Iris Facility Solutions NV as part of a rebranding.
The group expands its services and acquires Technical Building Services, a family business specialising in the installation and maintenance of HVAC systems (Heating, Ventilation and Air Conditioning) throughout Belgium.
The services of TBS fit into the Iris concept of Betterness.