Should I Use Cement Board Under Tile

Should I Use Cement Board Under Tile?

Whether or not to use cement board under tile is a common question for homeowners and DIYers. The answer depends on several factors, including the type of tile you're using, the substrate you're installing it on, and your budget. Here's a closer look at the pros and cons of cement board under tile to help you make the best decision for your project.

Pros of Using Cement Board Under Tile:

Strength and Durability: Cement board is made from a mixture of cement, sand, and polymers, which gives it exceptional strength and durability. It can withstand heavy foot traffic, moisture, and extreme temperatures without cracking or warping.
Moisture Resistance: Cement board is highly moisture-resistant, making it an excellent choice for use in bathrooms, kitchens, and other areas where water is present. It prevents moisture from penetrating to the substrate and causing damage.
Fire Resistance: Cement board is a non-combustible material, which means it won't burn or contribute to the spread of fire. This makes it a safe option for use in fire-prone areas.
Leveling Irregular Surfaces: Cement board can be used to level uneven surfaces before installing tile. This ensures a smooth and even installation, eliminating any bumps or dips that could affect the appearance of the tile.

Cons of Using Cement Board Under Tile:

Cost: Cement board is more expensive than other types of underlayments, such as plywood or gypsum board. The cost can add up, especially for larger projects.
Weight: Cement board is a heavy material, which can make it difficult to handle and install. It may require additional support systems, such as backer boards or joists.
Cutting and Installation: Cement board can be challenging to cut and install. It requires specialized tools and techniques, which may not be accessible to all DIYers.
Not Suitable for All Tile Types: Cement board is not suitable for all types of tile. It's not ideal for use with lightweight tiles, such as vinyl or ceramic, as it can cause them to crack or break.

When to Use Cement Board Under Tile: Cement board is the preferred underlayment for certain applications, such as:

Bathrooms and Kitchens: Where moisture resistance is crucial.
Fire-Prone Areas: For added safety and fire protection.
Heavy Foot Traffic Areas: To ensure durability and prevent cracking.
Uneven Surfaces: To level and provide a smooth base for tile installation.

When to Consider Other Options: If the downsides of cement board outweigh the benefits for your project, consider these alternatives:

Plywood: A cost-effective option that offers good strength and moisture resistance.
Gypsum Board: A lightweight and easy-to-install material, but less moisture-resistant than plywood.
Backer Boards: A pre-sized and pre-treated board that provides a moisture-resistant and easy-to-cut underlayment.

Ultimately, the decision of whether or not to use cement board under tile depends on the specific requirements of your project. Consider the factors discussed above and consult with a professional if necessary to determine the best underlayment for your needs.