Does resilient channel really work?

While we’re not sure where the myth originates, evidence shows that resilient channel attached to the underside of floor joists can successfully support two layers of 1/2-inch or 5/8-inch gypsum wallboard. In fact, such floor assemblies are listed in the Canadian National Building Code.

What is resilient channel in construction?

Resilient channel is 13 mm (½ in.) deep, constructed using 25-gauge steel. It has a single-leg attachment point that adds a flexural component to incoming sound waves. Resilient channel further works to break any wave received by the wallboard by creating a path that attenuates vibration.

Does resilient channel work for soundproofing?

Resilient channels are not popular without a good reason. They certainly are a very effective soundproofing material despite some of their minor disadvantages.

How can I get STC rating of 50?

Add Soundproofing Membranes: If you need to achieve an STC of 50 or higher, consider using a soundproofing membrane. These products offer decoupling by separating the drywall from studs, and also significant mass increases.

Can I use drywall screws for resilient channel?

Drywall Screws Going Into Both Resilient Channel Flanges: This needs to be inspected after every sheet of drywall. The RC is designed to have one screw lock it into the stud, and another screw attaches the 2nd flange to the drywall.

How thick is a resilient channel?

Resilient channel is available in 18 and 30 mil thicknesses (25-20ga.). Standard channel lengths are 12 foot long.

What is the depth of resilient channel?

1/2″ deep
Overall Dimension: 2″ high and 1/2″ deep with a knurled 1-1/4″ wide surface to receive gypsum board.

Can you use resilient channel on a ceiling?

Resilient channel should be installed on Cathedral Ceilings (single or double angled ceiling) with the center of the face of the channel 6 inches from the top to permit a floating angle wallboard installation. Resilient channel must be installed with mounting flange down.

What STC rating is soundproof?

In many cases less noise will be coming through the Soundproof Windows than the walls. Most walls have an STC of 43-48: Soundproof Windows usually have an STC rating of 48-54.

What does STC 55 mean?

STC 45-55 – Normal conversation can’t be heard. STC 55-65 – Most noises inaudible. Loud sources may be barely detected, and hard to define. Uses: Recording studios; “serious” cinema and music rooms. Examples: double door studio ”airlocks”; sealed + spaced double walls; very thick poured concrete walls.

How far apart do you put resilient channel?

Maximum spacing of resilient channel is 24 inches (600mm) on center for 5/8-inch (16mm) gypsum board and 16 inches (400mm) on center for 1/2-inch (13mm) gypsum board. When multi-layer gypsum board is used, hang both layers on resilient channel spaced 16 inches (400mm) maximum on center.