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How much blown-in cellulose can you put on top of a 5/8" drywall ceiling?

I have trusses on 24 inch centers and plan on at least 12 inches of cellulose. When do you have to use something stronger like OSB and how is it finished?

Asked by user-974877
Posted Nov 17, 2012 12:39 PM ET
Edited Nov 18, 2012 6:32 AM ET

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1.

Larry,
For a detailed discussion of your question, see Is 5/8 drywall sufficient to support R-60 cellulose in a ceiling?

Answered by user-756436
Posted Nov 18, 2012 6:26 AM ET

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