DMX Tile Membrane isolates movement in the subfloor which minimizes cracks in your tiles. DMX Tile Membrane meets and exceeds all tests set by the Tile Council of North America (TCNA). Our unique flared dimple design locks in the thinset to provide a secure base for the tiles. DMX Tile Membrane includes a roll of Vapor Band (Waterproof Seam Tape) at NO extra charge, which properly waterproofs the seams, improving the quality of your tile project. DMX Tile Membrane installs up to 50% faster than competitive membranes because our dimples are round, they have no corners, and therefore do not develop air pockets that can compromise your installation. DMX Tile Membrane is ICC approved (Approval No. ESR 5344) and passes the Robinson Test (ASTM C627-18) under "Extra Heavy" load conditions. Compare our value proposition to any competitor and you will see that we offer you better quality and higher value than anyone else. DMX Tile Membrane.. The Best Choice for your tile projects. Material: Polyethylene.