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Dominant share of the residential stock in the European countries has an exploited service life and is in a need for façade refurbishment. This paper contributes with an establishment of a tool for assessment of the sustainability of design options for buildings' façade refurbishment. The tool is based on a multicriteria system, assessing four design criteria, relevant to the process of façade refurbishment. The criteria are evaluated by several surveyed participants by utilizing the Analytic-Hierarchic Process (AHP).The tool is applied on several façade refurbishment design proposals assessment on a case-study of a residential building situated in Skopje, Western Balkans, Europe. Each of the façade proposals is assessed regarding their energy performance, CO2 emissions, investment costs and return of investment. Further, the results of the LCA analysis of the applied materials shows the contribution of each of them to the overall sustainability performance. The results of this research show that the use of wood and modified wood products as façade elements used for buildings' façade refurbishment can substantially decrease the greenhouse emissions and contribute to the carbon offset. However, due to the higher investment costs, the return of the investment is longer, leading to lower sustainability assessment ranking. It is concluded that the refurbishment of the façade with a conventional contact façade has the highest ranking on sustainability, followed by façade refurbishment with contact façade combined with only roof refurbishment/ glazing refurbishment or both. Also, the modified wood wall types show high sustainability ranking regarding their refurbishment potential. [ABSTRACT FROM AUTHOR]

This paper analyses the possibility to apply energy refurbishment measures in restored historic buildings in order to ensure reuse. The objective of the paper is to provide an appropriate methodology for the structural restoration of historic buildings, their re-use and sustainable energy refurbishment in accordance with current needs and conservation principles. The study provides the analysis and evaluation of the realized goals regarding energy refurbishment and energy efficiency. The presented historic buildings belong to Hilandar Monastery, Mount Athos, Greece. Mount Athos has been listed in UNESCO World Heritage Site for decades. The paper deals with the expert analysis of abandoned and devastated structures included in the Haybarn Complex. This paper provides a positive outcome of the performed restoration in terms of energy refurbishment and repurpose, since these buildings were turned into unique accommodation facilities for visitors. This accomplishment can be seen as a useful recommendation for improving energy efficiency of historic buildings during their restoration. All the undertaken methods are in accordance with the environmental protection requirements. This study is a practical observation and analysis of energy refurbishment in the field of restoration of listed buildings. This certainly is the most important contribution of this paper. All energy efficiency measures and renewable energy sources were carried out in compliance with conservation requirements and visual authenticity of historic structures. Assessment and analysis of energy efficient refurbishment via building performance simulation method and energy efficiency optimization was applied to several different models of restoration that was carried out in the Haybarn Complex. [ABSTRACT FROM AUTHOR]