Standard Shower Framing

Studs

• The studs in the frame around a shower are spaced closer together than in other walls. Generally, wall studs have 16 inches between the centers, but for a shower frame, the studs should be between 10 and 14 inches apart, measured from the stud centers. The plumbing fixtures for the shower need to be directly centered between the studs. Since the plumbing usually has already been partially installed before you begin framing, you'll set the studs to center the shower head and valves between them.

Shower Pan

• The shower pan is a waterproof base around the shower drain in custom-built showers. A builder either purchases a shower pan to fit the shower frame or frames the shower to fit a standard pan. Some builders custom-build shower pans along with the showers and frames. The size of the shower pan will be the same as the dimensions of the shower. For an all-in-one shower unit, or a shell, carefully measure the outside dimensions of the unit and use that as your framing area. Such showers have easier installation than custom-built ones, as they require only that you slide the unit into place, connect the plumbing and seal the edges.

Backer Board Support

• The curb of the shower extends up from the floor all the way around a tile shower to prevent water from escaping. At the top of the curb, you should install a perimeter of 2-by boards to hold up the water-resistant backer board that will support the tile walls. Because this area is susceptible to water inundation, avoid nailing the boards together. As the wood expands and contracts with moisture, the nails can loosen. Opt for screws and glue instead; you'll get a tighter, longer-lasting fit between the joints.

Plumbing Support

• Framing will provide additional support for the valves and showerhead. Install cleats between the studs at each location. The showerhead should be between 72 and 78 inches from the floor, and the valves between 36 and 42 inches from the floor.