Do you need Thinset under cement board?

The Importance of Thinset Under Cement Board

When it comes to tile flooring and wall installations, the foundation is just as important as the final product. That’s why it’s crucial to use thinset under cement board. But why is thinset so important and how does it differ from other types of adhesive?

Thinset, also known as tile adhesive or mortar, is a mixture of cement, water, and fine sand. It creates a strong bond between the cement board and the substrate, ensuring that the tile installation is stable and durable. This is particularly important for high-traffic areas such as bathrooms and kitchens.

One of the key advantages of thinset is that it is waterproof and can withstand the moisture and humidity that is common in areas such as bathrooms and kitchens. This ensures that the tile installation will not become loose or damaged due to water infiltration. Additionally, thinset can also be used to level out uneven surfaces, ensuring a smooth and professional finish.

Using thinset under cement board also helps to prevent cracking and shifting of the tile installation. This is because thinset is able to flex with the movement of the substrate, instead of cracking and breaking like other types of adhesive. This means that the tile installation will last longer and require less maintenance.

It’s also important to note that thinset is the recommended adhesive by manufacturers of cement board. This is because thinset is able to withstand the weight and pressure of the tile installation, and creates a secure bond that will not fail over time.

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In conclusion, using thinset under cement board is a crucial step in creating a stable and durable tile installation. It’s waterproof, can level out uneven surfaces, and flexes with the movement of the substrate. Plus, it’s the recommended adhesive by cement board manufacturers. So, next time you’re starting a tile project, make sure to use thinset to ensure the best possible outcome.


Author: superwhat