wrote in message
ups.com...
Hello, I am finishing up my shop walls tommorrow and I plan on using
3/8 inch plywood (already on hand). Do I but them up on each other or
should I leave some space between sheets for expansion? I'm not sure
how much plywood expands/contracts but I'm thinking that since I am
screwing the ply to studs spacing shouldn't matter since the screws
will inhibit movement anyhow. My ceilings are 8 feet and change so I
plan on using them vertically and trimming the edges so I can center
the edges on studs. Insulation is already up and I have the ceiling in
( 1/4 inch ply). Once all is in I am painting the whole thing white.
Any opinions, comments? Thanks in advance, Guy

It'll move, but you'll never notice the tiny bulge between the studs. Do
yourself a favor and run some fire-break type support between the studs at a
couple of levels. Note the centerline from some constant position for
future reference. Makes it easier to hang heavy stuff in the future when
you know where they are.