Universal Backer Board replacement, Uncoupling and Sound Deadening Board. Excellent uncoupling and sound deadening properties. Weighted, tension-free, thus creating an even and smooth substrate for tiling For the interior, floor and wall applications and wet areas, e.g., in apartments, houses, or hotel rooms outside of the shower and tub surround areas Only 5/32" (4 mm) thin. No echoing sound, full mortar transfer under and over, full tile support. Increased walking and living comfort. Easy to mark on and see chalk lines for your convenience. Approx. 30 % in mortar savings (no pre-floating of "waffles") compared to other existing uncoupling membranes. Insulating properties. Over existing radiant heated floors. Under heated cables, heating mats. For large format tiles. Glue down engineered wood and resilient flooring. Will not deteriorate. Flexible and sturdy. Easy to install. Can be cut, scored, sawn. VOC-free and environmentally safe. Reduces step sound by 10 dB according to DIN and EN ISO 10140