What is the maximum vertical spacing of drywall screws used to fasten 1/2 inch gypsum drywall without adhesive to an interior wall framed 16 inches on center?

The maximum vertical spacing for drywall screws when fastening 1/2 inch gypsum drywall to walls framed 16 inches on center is 16 inches. This standard is established by the Gypsum Association and is crucial for ensuring the structural integrity of the drywall installation.

Using drywall screws at this spacing helps prevent sagging and provides sufficient support for the drywall sheet, which is essential for a smooth finish and to minimize potential cracking. Each screw needs to be placed within this vertical limit to ensure that the drywall is securely fastened and conforms to building codes and industry standards.

The decision to use 16 inches as a maximum spacing aligns with common construction practices, allowing for even distribution of load and maintaining the alignment of the sheets. Proper screw spacing ultimately contributes to the overall durability and performance of the interior wall system.