Should the ToughRock Fireguard C gypsum board be installed vertically or horizontally?
While gypsum boards are stronger in one direction, for walls, they may be installed either vertically or horizontally on both wood and steel studs. If the boards are to be used in a fire rated assembly, then use the board orientation that is stated in your specific rated assembly.
What should we do if the gypsum board gets wet?
According to the Gypsum Association publication GA-231, gypsum board should not be allowed to get wet; it should be covered if stored outside. However, there are situations where the board could get wet during transportation/storage or when installed in-place. If the board gets wet in an installed in-place situation, first remove the sources of moisture. Lay the board on a flat surface and allow it to dry out thoroughly. Once the board is dry, examine it for paper-to-core bond and mold and mildew growth. If installed, examine for nail pops and sag (in the case of ceilings). Paper-to-core bond failure and board sag are irreversible damage, and the board should be replaced. For nail pops, place a fastener an inch above or below any popped-up nail.