I have a 30'x32'garage that is attached to my home only by a roof.
The garage is constructed with commercial 2x4 trusses 16" on center. I am planning on all the wiring to be inside exposed conduit installed after all my walls are completed. I will use it for parking and a workshop area
Although there is no code I beleive that I should install 5/8 fire resistant sheetrock at least on the ceiling. Since the trusses are 2x4 I thought I should install a plastic vapor barrier then sheetrock and rollout unfaced 4" deep insulation between the trusses. I would then add more insulation perpindicular to the first, but am not sure what happens when I bump up against the truss "X" framing? Do I cut it and snug it in as much as possible?
My second part is do I need to install strapping to the garage ceiling? I was thinking I had to and thought 12" about on center. A rescent vist to my local big box was quite a surprise when I priced 1x3 strapping. I have searched the web: some say strap others are just screwing the sheetrock to the bottom of the trusses.
I wonder if I will have enough nailing surface for sheetrock without strapping?
Appreciate any information.
Thanks in advance.