Within the range of Ditra products, there exists a selection of four distinct types of uncoupling membranes. Each of these membranes serves a specific purpose and offers unique features. For instance, the Ditra Heat uncoupling membranes feature a stud structure specially designed to accommodate heating wires. However, if you require an uncoupling membrane for a tiled area without heating, Schluter provides the Ditra 30M and Ditra XL membranes.

Model #UncouplingHeatingWaterproofingDimensions
DH5 12MYesYesYes3′ 2-5/8″ x 41′ 10-3/4″ = 134.5 ft2
DHD8 10MYesYesYes3′ 2-5/8″ x 33′ 6-1/2″ = 108 ft2
DITRA 30MYesNoYes3′ 3″ x 99′ 8″ = 323 ft2
DITRA-XL/175YesNoYes3′ 3″ x 53′ 3″ = 175 ft2

These membranes are equipped with a robust waterproofing and vapor management layer, ensuring superior support and load distribution. Moreover, both membranes differ in thickness and square footage, details which we will delve into later. While we have already discussed the heating membranes in this post, it is now time to explore the features of Ditra and Ditra XL in greater depth.


“DITRA provides reliable waterproofing & uncoupling. Its polypropylene composition protects the substrate from moisture penetration, which is particularly important in today’s building environment where most substrates are moisture-sensitive.”

—Source: Schluter.com

Schluter Ditra Uncoupling And Waterproofing

In the world of ceramic and stone tile installations, the challenges presented by today’s lightweight construction methods are undeniable. However, fear not, Schluter Systems has developed a state-of-the-art solution that addresses these issues head-on. Introducing Schluter-DITRA and DITRA-XL, the uncoupling membranes that have revolutionized the industry and set a new standard for excellence.

Ditra30M thicknessDitraXL thickness

At the core of the system is the uncoupling function provided by Schluter-DITRA and DITRA-XL. By incorporating a grid structure of square cutback cavities and an anchoring fleece laminated to the underside, these polyethylene membranes allow for in-plane movement. This action effectively neutralizes the differential stresses between the subfloor and the tile, eliminating the major causes of cracking and delamination. This critical uncoupling action ensures the longevity and integrity of your tiled surface.

  • The uncoupling function that allows for in-plane movement
  • Grid structure with square cutback cavities and an anchoring fleece
  • Eliminates the major causes of cracking and delamination
  • Waterproofing properties thanks to the KERDI membrane
  • Vapor control function
  • Available in different thicknesses (DITRA is 1/8″ (3.5 mm) and DITRA-XL is 5/16″ (7 mm))

The Ditra uncoupling membranes also feature essential functions such as waterproofing, vapor control, and support. The pliable, sheet-applied waterproofing membrane known as KERDI, combined with the uncoupling properties of DITRA and DITRA-XL, forms a comprehensive layer that protects moisture-sensitive substrates. This is particularly advantageous in areas such as tiled showers, bathtub surrounds, and other wet environments where water-related issues can pose a significant threat.

Membrane Ditra 30M – Schluter Uncoupling

When it comes to tile surfaces, durability, ease of maintenance, and hygiene are paramount considerations. Ceramic and stone tiles have long been regarded as ideal surface coverings, but their successful installation can be hindered by the movement and stress caused by modern construction methods. This is where the remarkable properties of Schluter DITRA 30M come into play, offering a comprehensive system that guarantees a durable and long-lasting installation.

Schluter-DITRA, with a thickness of 1/8″ (3.5 mm), minimizes the overall tile assembly thickness and reduces transitions to lower surface coverings such as carpet, engineered wood, and vinyl. It enables the application of ceramic tiles over single-layer plywood or OSB subfloors with joist spacing of up to 19.2″ (488 mm) in the center. DITRA is even listed by cUPC®, further attesting to its quality and compliance with industry standards.

Ditra XL Schluter Uncoupling Membrane

For situations that demand even transitions between tile and 3/4″-thick hardwood flooring, Schluter-DITRA-XL/175 steps in. With a thickness of 5/16″ (7 mm), DITRA-XL provides the necessary support while accommodating a wide range of substrates. It allows for ceramic tile application over single-layer plywood or OSB subfloors with joist spacing of up to 24″ (610 mm) in the center.

In an era of increasing environmental awareness, it is essential to consider the volatile organic chemical (VOC) emissions of building materials. Schluter DITRA-XL has undergone rigorous testing and evaluation, conforming to the VOC requirements outlined in the “Standard Method for the Testing and Evaluation of Volatile Organic Chemical Emissions from Indoor Sources Using Environmental Chambers, Version 1.1 for California Specification 01350.” These membranes align with the standards referenced by various green building specifications and rating systems.

Vaporproof, Waterproof …all proof Uncoupling Membranes

Schluter-DITRA goes beyond comfort alone; it incorporates essential functions such as uncoupling, waterproofing, vapor control, and support. This versatile system safeguards your floors against moisture issues while providing exceptional stability and longevity. Its harmonious blend of warmth and innovation elevates your living experience to new heights.

Untitled design 74 1

In conclusion, Schluter-DITRA and DITRA-XL are not just uncoupling membranes; they represent an innovative shift in tile installations. With their cutting-edge features and uncompromising performance, they ensure the durability, stability, and long-lasting beauty of your tile surfaces. Be sure to stop worrying about cracked tiles and grout disasters, and embrace the extraordinary features and dependability of Schluter-DITRA and DITRA-XL.

Let their uncoupling magic and innovative design captivate you, as you embark on a journey where comfort, functionality, and craftsmanship converge in perfect harmony.


What does an uncoupling membrane do?

An uncoupling membrane prevents cracks in tiles and grout by allowing for movement between the substrate and the tile surface, ensuring a durable installation.

Is uncoupling membrane necessary?

Yes, using an uncoupling membrane is highly recommended in situations where there is a higher risk of movement or stress on the tiled surface. It provides added protection and significantly reduces the chances of cracks and damage, ultimately prolonging the lifespan of the tile installation.

What kind of Thinset do you use for uncoupling membranes?

Schluter recommends using All-Set Mortar. When using uncoupling membranes, it is important to select a thinset mortar that is compatible with the specific membrane being used. The manufacturer of the uncoupling membrane typically provides recommendations for the type of thinset to use.

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