Cellulose insulation ?
I would like to use Cellulose insulation for sound purposes. I have an old house 1800s, and I was thinking of using cellulose, and my thought was to blow it into the finished ceiling / floor joist bay cavities. Currently there is no finished ceiling, and I was originally going to use high density fiberglass but because the framing is irregular not 16″ on center and there are many wires and mechanicals in the joist bays, I thought blowing in the cellulose once the finished sheetrock is installed, I thought the cellulose would more evenly fill around the obstructions in the joist bays. The longest run is about 16 feet, and the depth of the joist bays are about 8 inches.
I have a couple of concerns which I’m hoping you can help me with. Is this a good idea for sound purposes? Can I do this with the blowing machine that is offered at the big box stores, Will I get to much settlement to make it an effective sound insulation? Any advice will be greatly appreciated.
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