Measurements and prediction of sound insulation of innovative ventilated façade solutions

This work is part of Progetto Involucro, a research project funded by the Emilia-Romagna Region in the frame of POR-FESR 2014-2020. It aims at testing innovative ventilated façade solutions for improving buildings' energy and acoustic performance. Two identical test buildings (prototypes) are built in real scale on the same site and different ventilated façade solutions are installed on the South facing walls. In order to evaluate the performance of different alternatives, a benchmark solution is installed on the first prototype, while all the other innovative solutions are installed on the second one and they all are tested under the same environmental conditions. Sound insulation measurements are performed on site with the aim to investigate the contribution of different rainscreens in relation to their fastening system and individual component elements such as natural ventilation grills, open joints and potential openings on the external side. Furthermore, a measurement campaign focused on flanking transmission is conducted to evaluate sound transmission across the façade junctions for each innovative solution installed. This paper shows the preliminary results of the measurement campaign. Data obtained from on-site measurements are commented and discussed in relation to the values calculated using the model proposed in the ISO 12354-3 standard.