- Wrap the back of electrical boxes with acoustic putty pads.
- Never place boxes back to back in the same stud bay.
- Seal pipe penetrations with acoustic sealant and resilient sleeves.
- Avoid recessed lights in rated ceilings, or use acoustic covers.
- Seal around HVAC grilles and use lined flex duct for runs between rooms.
These details are inexpensive during construction and very difficult to add later.