Remember one important thing: THE AIR VENT.
I thought I'd soundproofed my basement ceiling with unfaced fiberglass insulation, then 1/2 inch styrofoam panels, then a suspended ceiling with sound retardent ceiling panels.
Guess what? The sound flowed right into the air duct and up into the first floor.
I thought I'd soundproofed my basement ceiling with unfaced fiberglass insulation, then 1/2 inch styrofoam panels, then a suspended ceiling with sound retardent ceiling panels.
Guess what? The sound flowed right into the air duct and up into the first floor.