What Is The Best Backer Board For Tile In A Shower Wall

Looking to add a stunning tile shower wall to your bathroom? Choosing the right backer board is crucial for ensuring a durable and long-lasting installation. Backer boards provide a stable substrate for tiles, preventing flexing and movement that can lead to cracking. Here's a comprehensive guide to help you select the best backer board for your shower wall, taking into account factors like moisture resistance, durability, and ease of installation.

Types of Backer Boards

Various types of backer boards are available, each with its unique characteristics. Let's explore the most common options:

Cement Backer Board: Composed of cement, sand, and fibers, cement backer board is renowned for its exceptional strength and moisture resistance. It is resistant to mold and mildew, making it ideal for shower walls.
Fiberglass-Reinforced Gypsum Backer Board: A combination of gypsum and fiberglass mesh, fiberglass-reinforced gypsum backer board is lightweight and easy to cut and install. However, it may not be as moisture-resistant as cement backer board.
Polymer Backer Board: Made from extruded polystyrene foam and coated with a polymer layer, polymer backer board is lightweight, waterproof, and easy to install. It is also resistant to mold and mildew.
Exterior-Grade Plywood: Although not specifically designed for showers, exterior-grade plywood is a budget-friendly option. It must be properly sealed to withstand moisture and prevent delamination.

Factors to Consider When Choosing a Backer Board

When selecting a backer board for your shower wall, consider the following factors:

Moisture Resistance: The backer board should be highly moisture-resistant to prevent water damage and mold growth. Cement backer board and polymer backer board excel in this area.
Durability: Look for a backer board that is sturdy and can withstand the weight of tiles and grout. Cement backer board and fiberglass-reinforced gypsum backer board are known for their durability.
Ease of Installation: Some backer boards are easier to cut and install than others. Polymer backer board and fiberglass-reinforced gypsum backer board are generally easy to work with.
Cost: Backer boards vary in price, depending on the material and manufacturer. Set a budget and compare the costs of different options before making a decision.

How to Install a Backer Board

Installing a backer board requires careful preparation and execution. Here are the general steps involved:

1. Prepare the Wall: Remove any existing fixtures, clean the surface, and ensure it is flat and even.

2. Cut the Backer Board: Measure and cut the backer board to fit the wall area.

3. Apply Mortar or Adhesive: Apply a thin layer of thinset mortar or construction adhesive to the wall.

4. Install the Backer Board: Position the backer board onto the mortar or adhesive, ensuring it is level and secure.

5. Screw the Backer Board (for Cement Backer Board): Use galvanized screws to fasten cement backer board to the wall.

6. Tape and Seal Joints (for Fiberglass-Reinforced Gypsum Backer Board): Use alkali-resistant mesh tape and thinset mortar to seal joints between fiberglass-reinforced gypsum backer boards.

Conclusion

Choosing the best backer board for your shower wall is essential for a successful tile installation. Consider factors such as moisture resistance, durability, ease of installation, and cost. Cement backer board is a top choice for its strength and moisture resistance, while polymer backer board offers ease of installation and waterproof properties. By selecting the right backer board and following proper installation techniques, you can ensure a beautiful and long-lasting shower wall that will enhance your bathroom for years to come.