Why can I hear my neighbors walking above me?
There is a combination of reasons that could be the cause of noise transfer. Recessed lighting not properly isolated. The RC channel could be installed improperly. The gypsum board around the perimeter might not be acoustically caulked. All of these can be determining factors in the acoustical performance of the ceiling isolation system. Even with all of these possible sound leaks fixed the RSIC-1 clip exceeds the unimast RC-1 by 7 IIC pts, and generic RC-1 by 15 IIC pts. Please read the article on the home page labeled "The truth about RC-1": http://pac-intl.com/rc_update_12-02.html
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