DITRA Collection

Frequently Asked Questions

What is the purpose of DITRA?

• The primary purpose of DITRA is to serve as an uncoupling layer, or membrane, designed to facilitate secure tile installations over various substrates. It effectively separates the tile layer from the substrate, allowing for independent movement between the two layers. This uncoupling action helps to prevent the transmission of stresses from the substrate to the tile, significantly reducing the risk of tile and grout cracking. Additionally, DITRA provides waterproofing, vapour management, and supports load distribution, enhancing the overall durability and longevity of the tile installation.

What is the use of DITRA?

• DITRA is used in tile installations to achieve several critical functions:
• Uncoupling: It allows for slight movement between the substrate and the tile layer, reducing stress and preventing cracks.
• Waterproofing: It acts as a waterproof barrier, protecting the substrate from moisture damage.
• Vapour Management: Its design allows for the passage of vapour, preventing damage from moisture buildup.
• Load Distribution: It evenly distributes the load across the substrate, enhancing the tile installation's durability.
• DITRA is suitable for a variety of indoor and outdoor applications, including residential and commercial spaces, on floors and walls.

Can you install DITRA over plywood?

• Yes, DITRA can be installed over plywood. It is designed to be compatible with various substrates, including plywood, making it a versatile choice for tile installations. When installing DITRA over plywood, it's important to ensure that the plywood is properly secured and meets the manufacturer's recommendations for thickness and quality to provide a stable base for the tile installation.

What is DITRA-SET used for?

• DITRA-SET is a type of thin-set mortar specifically formulated for use with Schluter-DITRA and Schluter-KERDI membranes. It's designed to provide optimal adhesion and performance when installing tiles over these membranes. DITRA-SET mortar helps to ensure a strong bond between the tile and the uncoupling membrane, contributing to the durability and longevity of the tile installation.

Does DITRA prevent cracking?

• Yes, one of the key benefits of DITRA is its ability to prevent cracking in tile installations. By providing an uncoupling layer between the tile and the substrate, DITRA allows for independent movement, reducing the stress transferred to the tile layer. This significantly lowers the risk of cracks developing in the tile and grout due to substrate movement, expansion, or contraction.

Do you need cement board under DITRA?

• No, you do not need a cement board under DITRA. DITRA itself acts as an uncoupling layer and can be installed directly over various substrates, including plywood, OSB, and concrete, without the need for an additional cement board layer. The decision to use a cement board might depend on the specific requirements of the project or the preferences of the installer, but it is not a necessity when using DITRA as it provides sufficient uncoupling and waterproofing on its own.