How far should the screws be placed on a 3/8 ceiling drywall Applica adhesive?

The correct spacing for screws on a 3/8 inch ceiling drywall application using adhesive is indeed 16 inches apart. This distance is in line with standard drywall installation practices, which aim to provide adequate support to minimize sagging and ensure proper attachment to the framing.

When installing drywall, especially on ceilings, it's important to consider the weight of the material and the potential for movement. Placing screws too far apart can lead to inadequate support, which might result in sagging or even cracking over time. Additionally, drywall adhesive is often used in conjunction with screws to create a stronger bond and reduce the likelihood of fastener popping.

The recommended screw spacing of 16 inches helps ensure that the drywall remains snugly held against the ceiling structure and provides the necessary strength to resist the various stresses encountered during installation and over time.