How To Install Backer Board On Shower Walls In

By | April 16, 2024

How to Install Backer Board on Shower Walls

Installing backer board on shower walls is a crucial step in tiling your shower. Backer board provides a stable and waterproof surface for the tiles to adhere to, ensuring a durable and long-lasting installation. Here's a step-by-step guide to help you install backer board on shower walls.

Materials You'll Need

  • Backer board (cement board or fiber cement board)
  • Backer board screws (1-1/4 inches long)
  • Drill with a screw attachment
  • Tape measure or ruler
  • Pencil or marker
  • Level
  • Notched trowel
  • Thin-set mortar
  • Mixing bucket
  • Grinder or saw (for cutting backer board)
  • Caulk gun
  • Silicone caulk

Step-by-Step Instructions

1. Prepare the Wall Surface: Remove any existing fixtures, such as towel bars or soap dishes, from the shower walls. Ensure that the walls are clean and free of any debris or dirt.

2. Measure and Cut Backer Board: Measure the walls where you'll be installing the backer board and cut it to fit using a grinder or saw. Make sure the pieces fit snugly together with no gaps.

3. Install the Backer Board: Apply a thin layer of thin-set mortar to the back of the backer board using a notched trowel. Press the backer board onto the wall, starting from the bottom and working upwards. Use a level to ensure that the backer board is installed straight.

4. Secure the Backer Board with Screws: Drive 1-1/4 inch backer board screws through the backer board and into the studs behind the wall. Space the screws approximately 6 inches apart along the edges and 12 inches apart in the field. Countersink the screws slightly below the surface of the backer board.

5. Seal the Joints: Apply a continuous bead of silicone caulk to all the joints between the backer board pieces. Smooth out the caulk using your finger or a damp cloth to create a waterproof seal.

6. Reinforce Corners: If any corners are exposed, such as around windows or shower doors, install mesh tape or corner reinforcement over the joints and apply thin-set mortar to embed the reinforcement. Smooth out the mortar to create a flat surface.

7. Allow to Dry: Let the thin-set mortar and caulk dry completely according to the manufacturer's instructions. This can take several hours to a day, depending on the products used.

Tips

  • Use a level to make sure the backer board is installed evenly.
  • Counter-sink the screws slightly below the surface of the backer board to avoid interfering with the tiles.
  • Apply silicone caulk to all the joints to prevent water penetration.
  • If you're installing backer board over an existing tiled wall, you may need to use a thicker layer of thin-set mortar to create a level surface.

Conclusion

Installing backer board on shower walls is an important step in tiling your shower. By following these instructions carefully, you can ensure that your backer board is installed correctly, providing a stable and waterproof surface for your tiles. This will help you create a durable and beautiful shower that you can enjoy for years to come.


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