Have a 53" high kneewall and a sloped ceiling that is about 70" that meets a flat ceiling that is about 55" Think of half a stop sign as the shape, and the length is about 30'. Have plenty of 1/2" drywall that is 4'x12'.

Should the kneewall, sloped ceiling, and flat ceiling all be mounted vertically to the floor instead of horizontially? Should the seams if mounted vertically all be inline or staggered? The studs and beams are all 24" on center.

Worried about visible seams in such a long room. Any help appreciated.

 

Would be nice to have 54" rock for the wall but.........

Hang the ceiling long ways and stagger the joints - any discrepencies in the rafters will be less noticable.

Ideally the walls woud also be hung horizontally which tends to make for the straightest looking wall. Personally [I'm cheap ] I would hang the walls whichever way is easiest and has the least waste, utilizes my scraps from the ceiling.

Try to have your factory edges together and all cut edges at the floor or corners [where wall and ceiling meet, etc]