Selection criteria for evaluating contractors of sgraffito technique in cultural heritage buildings

Sgraffito is a historical decorative technique applied in walls. This decoration could be seen in different European cities or villages. Nowadays, this decoration technique is almost disappeared because of decomposition, inexperience or lack of knowledge. Moreover, the preservation and restoration of sgrafitto technique is the most challenging and important task of cultural heritage buildings’ preservation. Therefore, the preservation of sgraffito depends not only the historic and architectural knowledge, studies or conservation projects of the cultural heritage buildings, but also demands the experience, proper qualification and knowledge of contractor. This paper presents criteria set for selecting sgraffito techniques’ contractor of heritage buildings. The study determines methods, set of criteria for sgraffito technique’s contractor selection, overview of sets the assessment criteria of selecting contractor. The research applies the Analytic Hierarchy Process method (AHP), seeking to determine the critical criteria and to get the weighting for each criterion.