What drywall hanging and finishing in Louisville covers
Ceilings go up before walls. The wall sheets then push up against the ceiling edge and hold that joint tight, which matters here because the joists above have moved over decades and the ceiling plane is rarely true.
Sheets get held slightly off the slab rather than resting on it. Board in direct contact with concrete wicks moisture up into the gypsum, and the damage starts at the bottom edge where nobody sees it until the baseboard comes off years later.
We run the longest sheets that will fit down the stairs, because every joint you avoid is a joint you never have to hide.