When should you check the placement of screws after drywall installation?

The correct choice is indeed to check the placement of screws before taping. This step is vital because ensuring that the screws are properly placed before the taping process allows for the best possible adhesion of the joint compound to the drywall surface. Proper screw placement also helps prevent future problems, such as screw pops or uneven surfaces, which would become difficult to correct once the taping and finishing have begun.

By reviewing the screw placement prior to applying the tape, you can verify that the screws are adequately recessed, spaced correctly, and ensuring the drywall sheets are tightly joined. This preparation helps create a smooth and even substrate for taping, which is essential for achieving a professional finish in the final wall surface.

Checking during the installation of the drywall is not sufficient as adjustments or corrections might be missed if not done beforehand since the installation can impact how well the drywall edges align when taped.