I’ve got a 20’x12’ vaulted ceiling, 4/12 pitch that I want to install resilient channel on to reduce the risk of cracking; sound damping is not important. Trusses are just plain 2x6’s in the roof. Would I install the resilient channel perpendicular or parallel to the trusses, and subsequently what direction would I install my sheeting in relation to the RC? I haven’t been able to find any good info online or in manufacturers install specs in relation to vaulted ceilings. Thank you.
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Perpendicular.
I found this
"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."
at the following website.
https://www.wconline.com/articles/89218-preventing-ceiling-cracking-with-resilient-channels
And of coarse much info is available on YouTube such as this YouTube vid.
