ABSTRACT

With the aging of the 20th century building stock, we are now facing the challenge to evaluate them and make selections for objects which should be kept as part of our built cultural heritage. It is consistent that the values which justified the selection should be preserved and respected during any intervention. Interventions cannot be avoided as aging often goes along with some degree of deterioration. The demands for interventions according to (international) conservation guidelines are applicable for the entire built heritage, independent from age or construction type.