Schluter Ditra matting is a waterproof membrane installed directly on to the substrate. Ditra matting is a polyethylene membrane with a grid structure of square cavities, each cut back in a dovetail shape and an anchoring fleece laminated to its underside. Designed for tile and natural stone installations Ditra matting serves as a waterproofing membrane and an uncoupling layer for problematic substrates. Combine with Schluter Kerdi band and Schluter Kerdi-coll for a complete waterproofing tanking system.