Resilient channel (RC-1) is a light-gauge metal channel that isolates drywall from the framing structure. By breaking the rigid connection between the wall surface and the studs, resilient channel dramatically reduces structure-borne sound transmission — the primary path for impact noise and low-frequency sound.
Resilient channel is the most cost-effective way to significantly improve sound isolation in wall and floor/ceiling assemblies. Combined with sound board and mineral wool insulation, resilient channel systems can achieve STC 55–65+ ratings that approach hotel and high-end residential acoustic standards.
Breaks the rigid connection that transmits structure-borne sound through walls and floors
Typically adds 8–15 STC points to a wall assembly compared to direct-attached drywall
Many multifamily assemblies require decoupling to meet Massachusetts IIC and STC requirements
RC-1 channel costs significantly less than adding additional layers of drywall for equivalent acoustic improvement
Required STC and IIC ratings confirmed per code, lease, or owner requirements.
RC-1 channels screwed horizontally to studs at specified spacing.
Sound board or standard drywall screwed through channel — not into studs.
Perimeter isolation: drywall must be isolated at all edges with acoustic sealant. Penetrations sealed. Back-to-back boxes avoided.
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