ISO 140-5 defines the procedures to evaluate the sound insulation of façades obtaining the global value D 2m,nT,w . Moreover, each component of the façade can be characterized in labor-atory by means of its airborne sound insulation R using the methodology given by ISO 10140, and the weighted sound reduction index R W calculated using ISO 717-1. It is possible to deepen the analysis of the façade components behavior using sound maps obtained through sound intensity measurements. These are used to locate sound leakages and, in general, to have a clear view of the performance of the tested element sub-components. The paper, after a brief description of the method and the instruments used, presents the results of several campaigns executed on different moveable parts of a building's envelope: windows, doors and minor components such as rolling shutter boxes. Thanks to the various case-studies pre-sented, it is demonstrated how the sound intensity measurements – using P-P probes -could bring to not negligible improvements both on the design and the installation of the investigat-ed components. Finally, a different technique for measuring sound intensity passing through a window is presented, using a P-U (Pressure -Velocity) probe.