Acoustic performances of wooden roof: A comparison between laboratory and field measurement

The object of this study is to analyse methods and test facilities for the evaluation of sound insulation of a wooden roof with different sequences of layers obtained with both common and innovative materials. The first part of the study focused on laboratory evaluations, and was followed by measurements performed with the help of an "ad hoc" outdoor full-scale test cell. The first results useful to understand the actual on-site behaviour of the examined structures came out from the comparison between laboratory results and those obtained from the outdoor test cell. In addition to some installation issues, what emerged was the influence of the presence of tiles by which the performance of the entire roof is affected, sometimes heavily. Such influence was then carefully analysed.