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.
remove the "not" from my address to email
USG Gypsum Handbook
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.
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
Looks like your installer needs a "do over".
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