Originally Posted by
Dave Diaman
What you will want to do is use Safe and Sound rock wool insulation between the shop and house. Then add resilient channel with 5/8” drywall attached to that. Those three things are the most cost effective ways to soundproof. Along with those things make sure you seal any air gaps that sound could travel through. For the compressor/dust collector room the same thing with 5/8 drywall on both sides will do the trick along with a baffle for your air return. Oddly enough my house was built with the basement as a shop so I have compressed air and 6” ventilation lines built into the foundation which has been a huge help for noise and ventilation. My air compressor sits I’m my garage and branches out through the foundation to the house, Shop and greenhouse. One other thing that made a big difference is I have something of a sound lock between my house and shop. I have two 1 3/4” solid core doors with gaskets around them. One is at the bottom of the stairs and the other at the top. This creates something of a dust barrier too. The door that exits to my spray booth, wood storage and outside are just standard steel doors. Not much sound so goes out that way. We have a fairly large lot for our area so none of the houses around can hear anything when I’m working unless I open all the windows and doors. I also have my shop heating and cooling system completely isolated from my house. This allows me to control the humidity as well as it keeps any fumes from finishes and dust out of the house.