Dr Panagiotis Theoulakis is a Mining and Metallurgical Engineer. He received his degree from the Department of Mining and Metallurgical Engineering, National Technical University of Athens. He received his PhD from the Department of Chemical Engineering of the National Technical University of Athens. Since 2010 is a Professor at the Department of Conservation of Antiquities and Works of Art. From 2003 to 2010 he has been an Associate Professor. From 1994 to 2002 he has been a Scientific Collaborator of the same Department. From 1984, as a postgraduate student and research collaborator, he has supervised many works for Diploma Thesis at the National Technical University of Athens, Department of Chemical Engineering. From 2006 to 2010 he was the Head of the Department of Conservation of Antiquities and Work of Arts of the Technological Education Institution of Athens. From 1999 to 2003 he worked for the Medieval Town Restoration Project Inspection Committee Greek Ministry of Culture. From 1983 to 1999 he worked for the Committee for the Restoration of the Temple of Apollo Epikourios, Greek Ministry of Culture. From 1983 to 1990 he worked also at the Stone Conservation Center of the Greek Ministry of Culture. Professor Theoulakis’ main scientific and research interest is the deterioration processes of materials in the monuments of cultural heritage, considered as the result of interaction between the environmental parameters and materials’ properties. He is also interested in the assessment and development of innovative mean and methods for documentation and evaluation of decay forms and for conservation as well. He has published his work in many scientific journals and conferences.