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Old School
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No, 5/8 for ceilings.
 
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130 Posts
3/8's should only be used for strange repairs and curved walls. Everything else should be 1/2" or 5/8"s.

PS.

1/2" is perfectly fine for ceilings, if your joists/trusses are 24" on center you need to use 1/2" CD board.

5/8" is good for everything but then there are drawbacks, such as cost, more work to install, acoustically it will change the way a room sounds and if used on both sides of a wall it may cause difficulties with trimming your doors.
 

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Drywall contractor
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1/2" is acceptable on ceilings if framing is 16" o.c., 5/8" for 24" o.c. framing.....
 
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1/2" is acceptable on ceilings if framing is 16" o.c., 5/8" for 24" o.c. framing.....
Unless there is a requirement for a fire rating or some other assembly. SFR's using TJI's will often be required to use 5/8" type X drwall because engineered lumber burns much more rapidly than nominal sawn lumber. Some areas have recognized the use of fire rated 1/2" GWB, but this is not universal

I'm sure that BJ knows this
 

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Just for reference, I used 3/8 on my garage walls, and it seems strong enough. I know...lots of people don't recommend it, but it worked, it's lighter, and cheaper, and it was just my garage.
 

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Framing Contractor
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Just for reference, I used 3/8 on my garage walls, and it seems strong enough. I know...lots of people don't recommend it, but it worked, it's lighter, and cheaper, and it was just my garage.

Cheaper? I think not. At least not in cost. It is a cheaper (inferior) product though.
 

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3/8" should not be used period. It is made for specific purposes as I stated above.

New houses here are built with 1/2" regular drywall.

5/8" or 1/2" Fireguard is not required, nor does it make the garage "Fireproof".


Fireguard, Type C or Type X... all it means is that it has a rating, a set of properties. It simply performs a certain way at a certain temperature for a certain amount of time.

Even 1/2" regular will "protect" against fire to a certain degree.
 

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Framing Contractor
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1,451 Posts
3/8" should not be used period. It is made for specific purposes as I stated above.

New houses here are built with 1/2" regular drywall.

5/8" or 1/2" Fireguard is not required, nor does it make the garage "Fireproof".


Fireguard, Type C or Type X... all it means is that it has a rating, a set of properties. It simply performs a certain way at a certain temperature for a certain amount of time.

Even 1/2" regular will "protect" against fire to a certain degree.
It has been a while since I hung drywall, but I am pretty sure that the house/garage wall must be hung with firecode drywall. I seem to recall doing that every time.
 

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Pro Flooring Installer
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There are no codes on drywall at all, here.
 
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