* Add backing to support panel edges that don't fall over framing. When installing new panels next to an existing wall surface, or where the framing layout doesn't coincide with
the drywall edges, it's often easiest to add an extra stud for backing.
* Add cross blocking with 24" O.C. spacing between framing members where needed to help support edges of drywall panels at joints.
* Fasten 2 × 4 nailers to the top plate of walls that run parallel to joints. This provides a fastening surface for ceiling panels. The nailer should overhang the plate by half its width.
* Attach furring strips where service lines and other obstacles project beyond the framing. The strips create a flat surface for attaching drywall and can also be used to
compensate for uneven joists. Use 1 × 3 or 2 × 3 furring strips and attach them perpendicularly to the framing with drywall screws. Space the strips 16" O.C. and use wood
shims secured behind the strips to adjust for unevenness.
* Use plywood strips to join panel edges in problem areas between framing, creating a floating seam. This method does not provide a substitute for structural backing; the
panels still must be supported by framing or blocking.
