Improving the Energy Efficiency in Historic Building Stocks: Assessment of a Restoration Compatibility Score

The improvement of the energy efficiency of building stocks mostly consisting of heritage-listed buildings is a crucial issue from the environmental and economic points of view. However, the related interventions must take into account the non-monetary value due to their importance in the field of heritage preservation. As such, the interventions must be compatible with restoration principles aimed at preserving the main characteristics of the building (dimensions, materials and aspect). Moreover, when Institutions and large Companies act on large building stocks, they need procedures and decision tools able to define the most convenient set of interventions dedicated to each building. In such a context, it is very useful to merge restoration compatibility with energy (and, consequently, economic) assessments. This paper shows the results coming from the application of such an approach, by tracking the main steps of the following procedure and by showing its main advantages. In particular, we evaluate the compatibility of retrofit interventions through the assessment of a restoration compatibility score, which comes from a multi-criteria procedure.