What is the required minimum length drywall screw for installing 1/2-inch gypsum board to wood studs?

The correct minimum length drywall screw for installing 1/2-inch gypsum board to wood studs is 1 1/4 inches. Using screws of this length ensures proper fastening to securely hold the gypsum board in place.

When selecting screws for drywall installation, it is important to consider the thickness of the gypsum board and the depth of the wood studs. A screw that is too short might not engage sufficiently with the stud, resulting in a weak hold that could lead to sagging or separation of the drywall from the studs over time. A screw that is 1 1/4 inches long penetrates the gypsum board and adequately grips the wood stud, providing the necessary strength and stability for the installation.

Choosing a screw length shorter than the required 1 1/4 inches would risk insufficient engagement with the studs, while any longer could penetrate too deeply or require longer installation techniques that do not align with industry standards or best practices. Therefore, a 1 1/4-inch screw is the optimal choice for this application.