Installing, Finishing and Repairing Gypsum Wallboard
Nail or screw boards to the joists, using 1-1/ 4" drywall nails for 1/2" wall-board, 1-3/ 8" drywall nails for 5/ 8" wallboard or 1-1/ 4" Type W gypsum drywall Be sure to stagger butt end joints so that a single joint does not extend all the way across the ceiling (see illustration for proper ceiling installation). Also Sand compound with a damp sponge to remove imperfections and blend with existing surface. 8.