How To Put Cement Board On Shower Curb

How to Install Cement Board on a Shower Curb

Installing cement board on a shower curb is a crucial step in creating a solid and waterproof base for your shower. This guide will provide detailed instructions on how to properly install cement board on a shower curb, ensuring a long-lasting and durable installation.

Materials Required:

Cement board
Thinset mortar
Notched trowel
Hammer
Galvanized nails
Screws
Construction adhesive
Caulk gun
Caulk

Step 1: Prepare the Shower Curb

Start by cleaning the shower curb surface thoroughly, removing any dirt, debris, or old adhesive. Ensure the curb is level and free of any imperfections.

Step 2: Cut the Cement Board

Measure and cut the cement board to fit the length and height of the shower curb. Use a sharp utility knife or a circular saw to make clean cuts.

Step 3: Apply Thinset Mortar

Apply a thin layer of thinset mortar to the shower curb using a notched trowel. Hold the trowel at a 45-degree angle and spread the mortar evenly, creating ridges.

Step 4: Place the Cement Board

Position the cut cement board on the shower curb, aligning it with the edge. Press the cement board firmly into the thinset mortar, ensuring it is level.

Step 5: Secure the Cement Board

Drive galvanized nails through the cement board into the shower curb at approximately 6-inch intervals. Countersink the nails slightly below the surface of the cement board using a hammer.

Step 6: Reinforce with Screws

For added strength, install screws along the edges of the cement board. Countersink the screws slightly below the surface as well.

Step 7: Apply Construction Adhesive

Apply a bead of construction adhesive along the joints between the cement board and the curb. Use a caulk gun to ensure a consistent seal.

Step 8: Caulk the Edges

Use a caulk gun to apply a bead of caulk around the edges of the cement board, where it meets the shower wall or floor. This will prevent water from seeping behind the cement board.

Step 9: Allow to Dry

Allow the thinset mortar, construction adhesive, and caulk to cure according to the manufacturer's instructions. This may take several hours or a full day.

Completion

Once the cement board is securely installed and the adhesives are dry, you will have a solid and water-resistant base for your shower. You can then proceed with tiling or installing other shower fixtures as desired.

By following these steps carefully, you can successfully install cement board on a shower curb, ensuring a durable and waterproof installation that will last for years to come.