first use the longest drywall you can get usually 12' if you end up with a butt joint you have 2 choicesif you hang drywall horizontally, what, if anything, do you do w/ all the butt joints to support them? it seems there might be movement, and cracks, otherwise. i've always wondered about this, and seek enlightenment.
You don't need any blocking just screw to the studs.tool: Thanks, but(t).... :laughing: a little funny reference to butt boards.... I was referring to all the edges meeting edges between studs. Many people are not putting blocking in walls now, so I guess blocking would be necessary. Or, do the edges not need any support? I just read about butt boards a few weeks ago here, and have made some for the ceiling of my garage. They sound great in concept, but I am wondering how they will perform in practice for a first timer. Is it best to screw the first sheet of 'rock to the butt board completely, or just put in a few screws, put a few into the second sheet of 'rock, and alternate along till done?
No dont leave any gaps and don't use any shims drywall is not like wood it doesn't react to temps.Aren't you supposed to have a small gap between sheets?
That would mean that for horizontal sheets you would need to shim the joint halfway up the wall otherwise the weight of the upper sheet will eliminate the gap. Then expansion due to temperature changes later would cause cracks, no?
(After the upper sheet is fastened the shims may be removed.)
I would also question whether the drywall would have enough give on (2x6) studs on 24 inch centers so that horizontal drywall would need fireblocking inside at the horizontal seam to prevent cracking later when someone leans on the wall the wrong way.
fixin: how thick were the shims on your butt boards? i saw a sketch someone here made and i think he had the shims at 1/16" apart on 9" wide boards. thanks. johni used butt boards for my ceilings, i made my own. pretty easy and pretty inexpensive. EXCELLENT results. if you do it right, the DW will not flex much, and doesn't need to. just screw em however.
i used paper board (for lack of a better name. its thick paper). i got mine at walmart, for free. its the stuff that is in between paper towels and toilet paper as it sits on the pallets in the store. i cut it 3' 11" long and about 2" wide. then i used caulk to glue it to the boards i cut. don't use a lot of caulk and press the paper into it to flatten the caulk down. let it try.fixin: how thick were the shims on your butt boards? i saw a sketch someone here made and i think he had the shims at 1/16" apart on 9" wide boards. thanks. john