How To Install Cement Board In A Shower Stall

Installing cement board in a shower stall is a crucial step in creating a waterproof and durable shower system. Cement board offers several advantages over traditional drywall, including its resistance to moisture, mold, and mildew, making it an ideal material for shower installations. Here's a step-by-step guide to help you install cement board in your shower stall:

Step 1: Gather Necessary Materials and Tools

Before starting the installation process, ensure you have gathered all the necessary materials and tools. You will need:

Cement board sheets (thickness typically ranges from 1/2 inch to 1 inch)
Cement board screws (1-1/4 inches long)
Drill with a 1/8-inch drill bit
Level
Tape measure
Utility knife
Safety glasses
Dust mask

Step 2: Prepare the Shower Stall

Before installing the cement board, it is essential to prepare the shower stall. This includes:

Removing any existing drywall or tiles from the shower walls.
Ensuring the shower stall is plumb and level.
Applying a waterproof membrane to the shower floor and walls, extending it at least 6 inches above the showerhead.

Step 3: Measure and Cut Cement Board Sheets

Measure the walls of the shower stall to determine the size of the cement board sheets you need. Use a utility knife to score and snap the cement board sheets to the desired size.

Step 4: Install Cement Board Sheets

Start installing the cement board sheets from the bottom of the shower stall. Position the first sheet in place and use a level to ensure it is straight. Secure the sheet to the studs using cement board screws, driving them at least 1 inch deep into the studs. Continue installing the remaining cement board sheets, ensuring they are tightly fitted and level.

Step 5: Apply Cement Board Seams

After installing the cement board sheets, it is essential to apply cement board seams to the joints between the sheets. Use a cement board joint compound and a putty knife to apply the seams, ensuring they are smooth and continuous. Allow the seams to dry completely according to the manufacturer's instructions.

Step 6: Install Backer Boards for Tile

Once the cement board seams are dry, you can install backer boards for the tile. These backer boards are typically made of a waterproof material and provide a stable surface for the tile installation.

Step 7: Apply Waterproofing Membrane

To ensure complete waterproofing, apply a final layer of waterproofing membrane over the cement board and backer boards. This membrane should extend at least 6 inches above the showerhead and overlap the shower floor membrane.

By following these steps, you can successfully install cement board in your shower stall, providing a durable and waterproof base for your shower tiles.