Phase 3 – Soundproofing
I actually don’t call what I did soundproofing. I call it noise reduction. I didn’t really use the practices that a studio would use as it would be ridiculously expensive. My goal is to keep the noise upstairs such that someone directly above can reasonably watch TV. The noise should also be quiet enough that my family can sleep two floors up no matter what I’m doing downstairs. Soundproofing would have involved keeping noise from going outside the house also. I wasn’t worried about that at all.
I installed 6” insulation in the joists overhead. I installed resilient channel (RC) to mount the drywall. Since the joists are 8”, that leaves some airspace, which is important. The RC keeps the vibrations in the drywall from getting to the joists.
I insulated all the walls that lead to other areas of the basement. I also put some insulation in the closet to keep DC noise down both upstairs and in the shop.
I wrapped all ductwork with insulation to keep the thin sheet metal from vibrating and transmitting the sound upstairs through the vents.
PIC – Resilient Channel Overhead
PIC2- Insulation in Staggered Stud Wall
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