Construction Supervisor License Practice Exam 2025 – All-in-One Study Guide for Exam Success!

Using 1-1/4" Type S or W screws for ceiling drywall installation that is not being glued is a suitable choice because these screws are specifically designed for securing drywall to metal or wood studs. Type S screws have a sharp point and are commonly used for attaching drywall to metal studs, while Type W screws are intended for use with wood studs.

The length of 1-1/4" is appropriate for ceiling applications, ensuring that the screws penetrate sufficiently into the supporting studs without extending too far beyond the drywall surface, which can lead to issues such as damaging the surface or compromising the structural integrity of the installation. Additionally, selecting screws that are not overly long is crucial in preventing unnecessary drywall bowing or popping.

Using these types of screws aligns with industry standards for ensuring a sturdy and reliable drywall installation, which is particularly important in ceiling applications where additional weight from fixtures may be present. This adherence to proper screw selection directly contributes to the longevity and reliability of the finished work.