Maximum span horizontally 4' o.c.
Seam cracking at drywall joints is a common problem on unsupported seams.
Best use is down rafters at 4' o.c. Sometimes used for walls where budget is a consideration in spite of cracking. Maximum span horizontally 4' o.c. Seam cracking at drywall joints is a common problem on unsupported seams. Best use is down rafters at 4' o.c.