[masraum]

Originally Posted by GH85Carrera

My old boss had his house custom built. He hated racket, and he had all the interior and exterior walls insulated with rock wool. The interior walls were all made with 2x6s not 2x4s for extra quiet.

He had a very quiet house, even when his grandkids and great grandkids were there.

I saw a show once that was focused on building a wall to be quiet. They used 2x6 top and bottom plates (and maybe the studs at the ends) and then used 2x4 studs throughout the wall. The studs alternated which side of the wall they were flush with. The studs help the walls carry the sound from one side to another. And then if you want to get really quiet, there is sound insulation that you can get that's like a heavy blanket, IIRC. You then take that and weave that back and forth around the studs in the wall. I thought that was interesting.