Drywall Installation for a Corner Tub With a Window

Drywall

• Most types of drywall do not have water-resistant properties, which is a must if you want to install drywall around a corner tub. Use water-resistant drywall only around a corner tub with a window to prevent the drywall from deteriorating due to the moisture in the area. Waterproof drywall, commonly referred to as “green board,” may be used on walls by the corner tub that won’t get direct water contact. If the corner tub also has a showerhead, you shouldn’t use green board.

Gypsum Core Boards

• Gypsum core boards or cement backer boards, which are both waterproof, and not just water-resistant, should be used in areas of a corner tub where water may come in direct contact with the wall. If the tub has a showerhead, use gypsum or cement boards in place of green board drywall. Despite the differences in material, gypsum and cement boards install to the walls around a corner tub using the same process used for drywall.

Cutting the Drywall

• Before installing drywall to the walls around a corner tub with a window, you must cut drywall pieces to fit the space. To keep the wall surfaces as solid as possible, use full-size drywall sheets whenever possible. Measure the width and height of each wall and cut sheets to these sizes. Measure in from the edges of each side of the wall with the window to the window opening. Recreate these measurements on the piece of drywall and connect the marks to recreate the window opening. Cut the opening for the window out with a utility knife.

Laying the Drywall

• Once you cut the drywall pieces for the walls by a corner tub, put them in place the same way that you install drywall on any other wall. Mark the location of each wall stud in the area of the corner tub on the ceiling above the stud so that you have a guide, and then lay the drywall piece against the wall studs. Drive a screw into the drywall every 5 to 6 inches along each wall stud to secure the drywall in place.