Q: What are resilient channels and where are they sold?
A: Resilient channels are strips of metal with an offset that spaces the drywall approximately ½" away from the framing. The are typically installed 24 inches on center perpendicular to the studs. The use of resilient channels dramatically reduces the amount of sound that is conducted though the structure. Resilient channels are not made or sold by Johns Manville but can be purchased at retail outlets and are typically located next to the steel studs or drywall finishing products such as corner bead or "J" trim.
Figure 1: Resilient Channel
Figure 2: Resilient Channel Application