The staircase has been renovated with the RenoProfil 8,5 mm Stabil profile and the Standard 8,5 mm profile in brass Eloxal.
As floor covering, the Tilolino 8 mm floor covering has been used.
The renovation of the existing stairs was not possible because the whole building is classified as a historical monument.
Within one week three floors, with 66 steps in all, have been renovated.
Tenants and other construction workers could use the stairs during the whole period of renovation.