How to Install Cement Board for Tile Projects

1. Why Use Cement Board?

• Moisture Resistance: Cement board is water-resistant, preventing mold and mildew growth. It’s ideal for showers, tub surrounds, and backsplash areas.

• Durability: It provides a sturdy base, preventing tile cracks and grout failure due to movement or moisture.

• Adhesion: Cement board offers excellent adhesion for tile mortar, ensuring a long-lasting installation.

2. Materials and Tools Needed

• Materials:

  • Cement board (e.g., HardieBacker or Durock)

  • Cement board screws (corrosion-resistant)

  • 4-mil plastic sheeting (moisture barrier)

  • Fiberglass mesh tape (alkali-resistant)

  • Thin-set mortar (modified for better adhesion)

• Tools:

  • Utility knife or carbide-tipped scoring tool

  • Drill with a screwdriver bit

  • Tape measure and level

  • Notched trowel

  • Sponge and bucket

3. Preparing the Surface

• Remove Existing Drywall or Plaster: Remove any old drywall or plaster from the area where the cement board will be installed.

• Check Wall Studs: Ensure that wall studs are 16 inches on center (O.C.) and are level and plumb. Install additional blocking if necessary for support.

• Install Moisture Barrier: Staple 4-mil plastic sheeting to the studs to act as a moisture barrier. Overlap seams by at least 2 inches.

4. Cutting and Installing Cement Board

• Measure and Cut: Measure the wall area and cut the cement board to fit. Use a utility knife or carbide-tipped scoring tool to score and snap the board.

• Leave a Gap: Leave a 1/8-inch gap between sheets and a 1/4-inch gap at the floor and tub or shower base to allow for expansion.

• Attach to Studs: Secure the cement board to the studs using cement board screws, placing screws every 8 inches along the studs.

• Stagger Seams: Stagger the seams so they don’t align with the seams of the drywall above or below for added strength.

5. Sealing the Joints

• Apply Mesh Tape: Place fiberglass mesh tape over the seams between boards.

• Thin-Set Mortar: Apply a layer of thin-set mortar over the mesh tape using a notched trowel, smoothing it out to create a seamless surface.

• Let it Cure: Allow the mortar to cure according to the manufacturer’s instructions before tiling.

6. Ready for Tiling

Once the cement board is installed and the joints are sealed:

• Check for Smoothness: Ensure all seams and screw heads are covered and the surface is smooth and even.

• Start Tiling: Begin your tile installation using thin-set mortar and the appropriate notched trowel for your tile size.

Need Professional Help?

Installing cement board is a crucial step for a durable and water-resistant tile installation. If you want a flawless finish without the hassle, contact ProHands Handyman. We provide expert cement board installation and tile services to transform your space.

📞 Call or text: 818-401-7766
📍 Serving Glendale, Burbank, Pasadena, and surrounding areas.

Contact us today for a free estimate and professional installation!