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Old 03-17-2010, 05:20 PM   #1
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Drywall for a garage ceiling

Several questions. Is ceiling drywall different from regular drywall? I plan on 1/2" 4x8 sheets, should I go 5/8? Is there a major difference in Brands? ("Tough Rock" versus some other brand). I plan to rent a lift, can it handle a 12' sheet, if I go that route? Any advantages for 4x12 versus 4x8, other than less seams?
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Old 03-17-2010, 06:47 PM   #2
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yes it can handle 12, less seams, need to have 5/8 if garage is connected to house for fire rating, walls to at hose side and stays flater on 2' truss spacing
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Old 03-17-2010, 07:51 PM   #3
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If there is (or may be in future) living space above the garage then it needs to be 5/8

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Old 03-17-2010, 08:20 PM   #4
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Fire Separation

Typically it is required to have a minimum 45 minute fire rated assembly between a residential garage and the dwelling unit. As mentioned in the previous posts one layer of 5/8" type "X" gypsum board taped and spackled a minimum of two coats or as it is sometimes said so that the tape is "buried". Many municipalities will interpret the 45 minute fire separation to mean the wall common to the house and if you need the ceiling as a fire separation then the supporting structure also, e.g. the other walls of the garage.
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