Ardex X 4 Thinset Mortar - 40 Lbs Bag, Gray, for Indoor and Outdoor Installation of Large-Format Tile and Heavy Stone on Walls and Floors, Easy Application

• Interior and exterior use. Suitable for installing ceramic or porcelain tile on masonry cement block, brick, cement mortar beds and leveling coats
• Working time: 15 to 20 minutes. Polymer-enriched for high performance, high adhesion and high deformability. Features creamy consistency that makes the troweling process pleasant, fast and easy 
• Open time: 10 to 15 minutes; Pot life: 3 hours.  Works well with ceramic tile, porcelain tile, cultured stone tile, quarry tile, pavers, Saltillo tile, most types of marble, granite and natural stone
• 40lb. (18 kg) bag. Suitable for installing ceramic or porcelain tile  (bathroom tile, pool tiles, fountains, water features, hot tub surround, shower, steam room environments)
• Coverage: 80 sq.ft. (7.4 m²)

The ideal everyday tile and stone mortar delivering performance and value. An easy to mix and apply, polymer-modified mortar with good sag resistance and strength for use with porcelain, ceramic, quarry, mosaics and most natural stone tile over common interior surfaces, as well as horizontal exterior installations of porcelain tile over concrete or masonry surfaces. ARDEX 4 is recommended for most common tile sizes. Ardex X 4 is suitable for both interior and exterior work, providing reliable adhesion to many materials such as ceramic tile, quarry tile, pavers, Saltillo tile, clinker tile, brick tile and natural stone. Its durability makes it an ideal choice for installation on many surfaces including cured concrete (at least 28 days old), masonry, cement blocks, brick, mortar bed, levelling coat, sheet rock, autoclaved aerated concrete, gypsum fiberboard, poured mastic asphalt, heated screed, foam backer board, and over waterproofing membrane. Ardex X 4 is the go-to solution for professional tile installations thanks to its superior performance, easy application, and load-bearing capability. It is the top choice of contractors and DIY tile installers seeking exceptional results due to its excellent workability and broad compatibility with many substrate and surface types.