Maximum flexibility to prevent cracks in tile, Unsurpassed bond strength, Non-slump for floors; sag and slip resistant for walls, Lightweight - 30 lbs. covers the same area as 50 lbs. of traditional mortar, Exceeds ANSI A118.4TE, A118.15TE and A118.11 without the need for additives, Formulated with recycled material and contributes to LEED certification