Windows offer daylight and fresh air in buildings and play an important role in ensuring acoustic comfort indoors. In Southern and Southeastern Brazil, rolling shutters are commonly used in windows to provide shading, and they can also have a positive effect on acoustic performance. Often, higher-thickness glass is indicated in order to increase the acoustic performance of the facade system, without, however, understanding the real contribution of this elementto the overall performance. This study presents the results obtained from laboratory tests with two models of PVC frame windows. The glass used was monolithic glass, with 4mm and 6mm thickness, laminated glass with 4+4mm and 4+6mm thickness, and double glazed glass with 4+6mm, with a 6mm chamber, in situations with extended and retracted rolling shutters. The measurements were applied according to the ISO 10140-2 (INTERNATIONAL..., 2010) standard referred to the Brazilian standard NBR 15575-4 (ABNT, 2013). The results obtained show that the window sound insulation is higher when the rolling shutter is extended, except on low frequencies. Laminated glass presented better results compared with monolithic glass and double glazed glass.
Acoustic performance; Sound insulation; Rolling shutter; PVC frame window
