Soundproofing

[ZZenith]

2. You'll need to define "soundproof."

An actual soundproof room involves building a building within a building, with none of the inside walls touching the outside walls.

You can float your drywall on metal channels that somewhat detach the drywall from the framing but it will still allow a lot of outside sound in. Also, all windows will need to be doubled with the interior ones angled at least 5 degrees from the outside.

Soundproof is EXPENSIVE! You can add layers of drywall directly on top of what’s already there, which will help because mass defeats acoustic waves but the framing of the walls will still transmit energy to the inside.

Hope that helps - happy to explain anything that didn’t make sense.