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Ardex X77 White Microtec Fiber Reinforced Tile and Stone Mortar 40 lb Bag

4.8 (1) Write Review
Free shipping on orders over $29.99

$54.03

$ 28 .99 $28.99

In Stock

About this item

  • Advanced Technology: Ardex X77 MICROTEC for large tiles, featuring cutting-edge polymer-modified mortar.
  • Versatile Use: Perfect for high traffic, facades, heating systems, and swimming pools.
  • Extended Open Time: Remarkable 60-minute flexibility, double the ISO standard.
  • Reliable Performance: Superior sag resistance, doubling the ISO standard.
  • Cost-Effective Coverage: Each 40 lbs. bag covers 110 sq. ft. with a 1/4" sq. notch trowel.


ARDEX X 77 MICROTEC Fiber Reinforced Tile and Stone Mortar is a high-performance, microfiber-reinforced, polymer-modified mortar formulated especially for large format tile installations. Use to install porcelain, glass, quarry, ceramic and most natural stone tiles* over interior or exterior concrete and masonry floor and wall surfaces. Also use for interior applications over exterior-grade plywood. ARDEX X 77 is ideal for use in swimming pools and fountains and over in-floor heating systems and is recommended for all tile sizes, including mosaics. Formulated to provide excellent bond strength, sag resistance and flexibility, ARDEX X 77 is ideal for the installation of large format tiles (exterior and interior), as well as high traffic areas, wet areas and exterior building façades.


Jim N.
Reviewed in the United States on April 15, 2022
Best product for large format tile!