Can ToughRock® Sheathing be used on exterior corridor protected ceilings and soffits?
Georgia-Pacific does not recommend using ToughRock Sheathing for these applications. Instead, consider using ToughRock® Fireguard C® Soffit Board , DensArmor Plus® Type C, or DensGlass® Sheathing, depending on the fire rated design and are designed for soffit applications.
Must an additional moisture barrier be supplied and installed when using DensShield Tile Backer panels?
No. The grey face (tile side) of DensShield Tile Backer has a heat cured acrylic coating which is a built-in moisture barrier and vapor retarder so that no additional moisture barrier is required. In fact, an additional moisture barrier to the back side of DensShield Tile Backer is NOT recommended. Prior to the tile installation it is permissible to apply a fluid applied membrane to the face of DensShield Tile Backer for enhanced moisture resistance.