The Schluter®-DITRA and DITRA-XL membrane is specially designed for ceramic and natural stone tiles. It provides a separation function which prevents cracking of tiles and grout. Made of polyethylene, the DITRA and DITRA-XL membrane serves as a waterproofing layer protecting moisture-sensitive substrates, such as plywood/OSB. Gaps under the membrane allow excess moisture and vapor to escape from the substrate – otherwise the tile could be damaged. The DITRA and DITRA-XL membrane fulfills all of these functions, in addition to adequately providing support and distribution of the load of the tiled covering.

• Provides uncoupling, sealing, steam management and distribution of heavy loads to preserve the durability and integrity of tiled installations
  Quick and easy to install over concrete, plywood, OSB, gypsum, existing vinyl floors, structural planks, subfloors and radiant floor heating systems
• Convenient tile underlayment alternative to cement backer board or plywood
• Use DITRA for ceramic tile installations over single layer plywood or OSB subfloors on joists spaced up to 19.2″ o.c.
• DITRA is only 1/8″ (3.5 mm)-thick to provide the thinnest possible assembly without sacrificing performance
• DITRA features cutting grooves for precise cuts and air release vents at the corners of the cutback cavities for faster filling
• Use DITRA-XL for ceramic tile installations over single layer plywood or OSB subfloors on joists spaced up to 24″ o.c.
• DITRA-XL is 5/16” (7 mm)-thick to create an even transition between typical 5/16” (7 mm)-thick tile and 3/4” (19 mm)-thick hardwood flooring
• DITRA-XL is ideal for installations requiring greater movement accommodation, such as applications using natural stone tile, large-format tile, etc.
• DITRA and DITRA-XL are for interior use only, dry or wet areas