I added a 10'x15' room and am preparing to hang drywall when I noticed the center of the engineered roof truss (15' span) is sagging slightly. The 2x4 trusses have a joint in the bottom center. If I put a 4' straight edge on one side, the gap about 3 foot out on the other side is ~1/4".
Talking with some friends we disagree on how to hang the ceiling drywall. Should the joint line up with the center of the truss or should the panel cover the center? Which would reduce the chance for cracking?
Note: Images are exaggerated for clarity.
Option 1: Joint in center
Option 2: Overlap center