Interventional maintenance involves interventions on the material of the object that are intended to slow down its deterioration but also to restore its form. The restoration of the form of the object, the aesthetic restoration, is done without affecting the aesthetic, historical or structural integrity. Interventional maintenance involves a number of procedures depending on the type of the object and its maintenance status. Rescue interventions are interventions performed on the object in order to be rescued when there is no time for systematic maintenance or when it needs to be protected from interventions made near it and there is risk that it will affect it, when the area where the object is located is to be destroyed etc.