ARDEX X 3™ Tile and Stone Mortar The ideal everyday tile and stone mortar delivering performance and value. An easy to mix and apply, polymermodified mortar with good sag resistance and strength for use with porcelain, ceramic, quarry, mosaics and most natural stone tile over common interior surfaces. ARDEX X 3 is recommended for most common tile sizes. • Interior and exterior use • Working time: 15 to 20 minutes • Open time: 10 to 15 minutes; Pot life: 3 hours • 40lb. (18 kg) bags, Gray and White • Coverage: 80 sq.ft. (7.4 m²) * For moisture sensitive and natural stone tiles use ARDEX X 32™MICROTEC® or ARDEX N 23™ MICROTEC® (interior only).