What is the correct spacing for drywall screws for a wall and ceiling, what I've found so far is 16" wall and 12" ceiling, I can't find chicago code on this and a dry Waller doing a few hundred sheets for me is about 16" on ceilings
if you're talking 1/2" rock on studs spaced at 16" oc, then the screw spacing is 12" ceiling and walls. If using nails, then it's 8" apart on walls and 7" apart on ceilings. This all according to the 2006 IRC for one and two family residences.
Ok thanks, it's 5/8
USG Gypsum Handbook
wood framing single layer drywall attached with nails ceilings 7" o/c side walls 8" o/c
When I've done ceilings, I've used ~6" o/c ......results in 1 extra nail every 4' and it's easier for me to just keeping 1/2'ing the spacing rather than worrying about 7" spacing.
wood framing single layer drywall attached with screws ceilings 12" o/c side walls 16" o/c
fire rated walls & ceilings have different nail spacing as do shear walls.
Looks like your installer needs a "do over".
cheers Bob
In Chicago you can't talk to anyone, it's all computer, you can't even schedule an inspection by phone . I spent hours and all I get is to leave a message. It's cut gov cut backs.
No, it's usually indolence and sloth.
In your case, it's Chicago.
Then I'd try Evanston or Hinsdale or Naperville, they don't know where you are calling from if you call from a cellphone.
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