im hanging 4' x 8' x 5/8" firex type drywall on my garage ceiling and plan to pump in 8-10" (max) of loose insulation on top of it.
rafters are 24" apart. am i good with 12" screw spacing to hold this up? for a 4x8 sheet this basically puts 5 screws across the width, every 2'. or 25 screws for a whole board.
everything ive read seems to point to 12" spacing, and ive been told it meets code. i just want to make sure before i pump the stuff in and watch my ceiling fall due to the weight.