Schluter-DITRA and Schluter-DITRA-XL are polyethylene uncoupling membranes with a grid structure of square cutback cavities and an anchoring fleece laminated to the underside. DITRA and DITRA-XL provide uncoupling through the open rib structure, which allows for in-plane movement that effectively neutralizes the differential movement stresses between the substrate and the tile, thus eliminating the major cause of cracking and delaminating of the tiled surface. In conjunction with tile coverings, DITRA and DITRA-XL form an uncoupling, waterproofing, and vapor management layer, while providing support/ load distribution. The combination of these four essential functions allows for the successful installation of tile over a wide range of substrates, including plywood/OSB, concrete, gypsum, heated floors, etc.