A rapid-setting, Portland cement-based, polymer-modified mortar with MICROTEC® and self-drying technologies, ARDEX X 32™ MICROTEC®Universal Rapid Setting and Drying Thin-to-Thick Bed Mortar is ideal for moisture-sensitive natural stone, marble and granite installations. It will not contribute to staining, discoloration or warping of natural stone tiles. ARDEX X 32 can be used as a thin to thick bed up to 1 1/4” (31.8 mm) thick and is excellent for use with agglomerate and ungauged stones that require various mortar depths. Even at a 1 ¼” (31.8 mm) thickness, ARDEX X 32 is ready for grout in just 3 hours, making it ideal for same day interior or exterior fast track installations. ARDEX X 32 can be used over exterior concrete and masonry surfaces and over common interior substrates, including concrete, masonry and exterior-grade plywood.