xrongor wrote:
hey all

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.

thx
randy



I always double screw. In other words I put two screws about 2" apart
every 12" or so.