Drywall Technique for Pyramid Ceiling—Zone 2B–new construction
I have a small tower with a pyramid ceiling. I plan to use 5/8″ sheet rock on the ceiling.
See 2 attached photos.
My questions are:
1) Should I attach the dry wall to the Hip rafters or let the drywall float at that intersection?
I think not attaching to the Hip rafters might work for the lower panels, but I don’t think that will work for the upper panels because there wouldn’t be much holding them to the ceiling.
2) If I do attach the drywall to the Hip rafter, is it likely to crack or ridge there? Is there a better way to do this?
3) Note that in the second photo, the Hip rafters are recessed about 1/2″ or so from the Jack rafters (varies 1/2″ to 5/8″+). My plan is to use shims there to bring it out to match the intersection of the underside of the drywall sheets at that seam (about 1/4″ shim). What do you think?
4) General question about drywall shims—I can’t find anyone locally that uses them or has ever sold any. Apparently no one uses them here. I would appreciate any comments about the use of shims and the best type to use (plastic or paper or whatever). If you use a big bead of glue for out-of-line framing, would that function as a shim?
GBA Detail Library
A collection of one thousand construction details organized by climate and house part