1/2 inch drywall is fire rated for 30 minutes. It can be doubled for a 1
hour fire rating. If it is used for more than a 30 minute rating and its
height is over a certain limit (varies by location) then steel studs are
required due to their higher weight bearing limits.
Kent
Subject: Re: Garage planning
> btw... 5/8" drywall or 2 ply 1/2" drywall is considered by some building
> codes to be firestop. But, I believe only with steel studs.
>
> Thanks for the diversion. Peter C
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