Resilient sound clips are small metal and rubber pieces that attach to the framing with screws. Metal furring hat channel inserts into the clips with drywall screwed into the channel. Clips provide decoupling by suspending the drywall on the furring hat channel about 1-1/2″ from the framing. Not all clips are equal, only the well engineered clips with a soft rubber base can achieve results meeting or exceeding double stud walls. Other than the design of the clip, the two reasons resilient clips perform so well are 1- the minimal number of connections between the framing and drywall, 2- the flex allowed in the channel within the wide 48” span between each clip.
The increase in performance by using resilient sound clips (GenieClip) is significantly better than the performance of a staggered stud wall and equal to the performance of double stud walls with three inch spacing. Resilient sound clips also provide an affordable alternative for achieving a high rating in a decoupled ceiling without setting up independently framed joists, i.e. room within a room design.