Drywall help

[burninghXcsoul]

So my garage is ready to drywall. I am using 5/8" fire rated drywall for the ceiling and walls. The ceiling floor joists are 24" OC same with the wall studs.

I can't seem to find a consistent answer for how many screws go on a sheet. I've read from one every 12" to one every 6 to 8 inches on the edges and then only 12" in the center. Is there a code for how many need to be on a sheet and as far as spacing?

Thanks

 

[pattenp]

The sheetrock manufacturer should have a nailing/screwing guide.

Here's one for USG
https://www.usg.com/content/dam/USG...-gypsum-panels-installation-guide-en-J371.pdf

 

[Toomanytools?]

It's another mixed answer topic, local codes may vary. 1/2" walls 8" edges maximum 16" field, Ceilings 7" edges and 12" field. On the edges stagger the pattern so you don't have screws/nail side by side. Following that have never had an inspection issue. Only once we had a shear wall of double 1/2" and had to have 4" edges and 8-10 in field. Hope that helps

 

[6768rogues]

Drywall itself is not fire rated. Certain types, for example type X, are components in fire rated wall systems. Testing laboratories (UL, FM, GA as some) test wall assemblies for fire resistance. Then they publish documents that spell out what components and methods will meet the specified fire rating. If you are intending to have a fire rated wall system when you are done, look in one of the UL, FM or GA books and find one that suits your situation and it will describe everything, including fastener spacing. If your wall is not built exactly to the specs of a tested system, it makes no difference what kind of wallboard you use, it will not be fire rated.
If you are not intending to have a fire rated wall system, how many fasteners you use depends on whether you plan to use glue or simply use fasteners.

 

[longez]

Drywall itself is not fire rated. Certain types, for example type X, are components in fire rated wall systems. Testing laboratories (UL, FM, GA as some) test wall assemblies for fire resistance. Then they publish documents that spell out what components and methods will meet the specified fire rating. If you are intending to have a fire rated wall system when you are done, look in one of the UL, FM or GA books and find one that suits your situation and it will describe everything, including fastener spacing. If your wall is not built exactly to the specs of a tested system, it makes no difference what kind of wallboard you use, it will not be fire rated.
If you are not intending to have a fire rated wall system, how many fasteners you use depends on whether you plan to use glue or simply use fasteners.

^^^ This is 100% correct, it could not be stated any better.

 

[Deej-79]

We always do five in the field and one between each stud or joist if you can.

 

[tros]

We do 6 per stud