The Norwegian Facade Insulation Study: The efficacy of facade insulation in reducing noise annoyance due to road traffic

摘要

The efficacy of fagade insulation in providing an improved indoor noise environment and in reducing indoor noise annoyance was examined in a socio-acoustic before-and-after study with a control group. An average equivalent noise reduction inside the dwellings of 7 dB was obtained from the fagade insulation. Whereas 42% of the respondents were highly annoyed in the before-situation, this dropped to 16% in the after study.