If the ceilings going to be done it needs to go up first, then the top sheet on the wall goes up so it can be pushed up tight to the ceiling.First of all, is there a good website on the subject. I really don't know anything.
This is in my basement, primarily to keep dust and noise in my shop. It would be nice if it looks good, but that isn't the primary reason. Though my wife might not agree. I intend to put the drywall up, and worry about the tapping and stuff some time in the indefinite future.
But two questions....
1)One wall is 12' 0.5". How do I handle the 1/2"? Do I leave a little space on all 5 sides and figure tape and mud will cover over? Do I leave the half inch on one side and put some molding over the gap? Or something else?
2) If the drywall is 8' and the studs are 8' and the top and bottom plates are 1.5" each, the drywall won't cover everything. Do I put the drywall on the floor and screw to the bottom plate and studs? Up higher and screw to the top plate and studs, or in between and just to the studs?
I wanted to put up cheap paneling, but my wife thought drywall would block the noise better.
On the 12'1/2" wall install the rock first on the shorter wall, that will get rid of that 1/2" you need to make up.
If I had to rock a wall that was 8'-1-1/2" tall I would order wider sheetrock from a real rock supply house or add 2 X 4 blocking in each stud bay, install the rock to the wall leaving a gap at the botton then just add a 1" filler strip at the bottom so the base board will lay flat. What ever you use as a filler needs to be 1/2 up off the floor.
Make sure you have nailers in the inside corners to attach the drywall to.
Even if you had of just installed paneling you needed to install drywall to keep it from bowing between the studs.