Ardex X 90 Outdoor MicroteC3, Rapid-Set, Cement-Based Flexible Thinset Mortar, 40 Lb (18 Kg) Bag, Freeze Thaw Resistant Flooring Underlayment for Stone, Ceramic Tile, for Exterior Applications, White

Product Features:

• MicroteC3 Performance Technology: Built with advanced cements, polymers, and microfibers to deliver exceptional strength, flexibility, and long-term durability.
• Extreme Freeze-Thaw Resistance: Tested beyond 150 cycles, providing superior protection in harsh climates and far exceeding ANSI A118.15 requirements.
• Rapid-Set Installation: Enables grouting and foot traffic in just 2 hours, even at temperatures as low as 40 F for faster project turnaround.
• Maximum Efflorescence Control: Minimizes salt migration and staining, preserving clean tile finishes for exterior and moisture-prone installations.
• Weatherproof Protection: Resists heavy rain exposure shortly after application, ensuring reliable performance in outdoor environments.
• Interior and Exterior Versatility: Ideal for floors and walls on balconies, patios, swimming pools, facades, and high-load commercial spaces.
• Thin to Medium Bed Capability: Supports installation thickness up to 5/8 inch, suitable for large format tiles and uneven substrates.
• Extended Working Properties: Offers up to 30 minutes open time and 60 minutes pot life for improved flexibility and efficient installation.
• Superior Tile Adhesion: Provides excellent bond strength for porcelain, ceramic, glass, marble, granite, mosaic, and natural stone tiles.
• Smooth Application Consistency: Creamy, easy-to-spread texture enhances coverage, simplifies troweling, and ensures precision placement.
  

Product Description:

Ardex X 90 Outdoor MicroteC3 Rapid-Set Flexible Thinset Mortar is engineered to meet the highest demands of modern tile and stone installations. Designed with cutting-edge MicroteC3 technology, this mortar combines specialty cements, advanced polymers, and reinforcing microfibers to deliver exceptional performance in both interior and exterior environments. It is specifically formulated to withstand extreme weather conditions, offering industry-leading resistance to freeze-thaw cycles, moisture exposure, and efflorescence for long-lasting, professional results.

Ideal for a wide range of applications, this high-performance mortar is perfectly suited for balconies, patios, swimming pools, facades, and high-traffic commercial areas. Its ability to cure effectively at temperatures as low as 40 F allows for reliable installation even in cooler climates, while its rapid-setting formulation enables grouting and foot traffic in as little as 2 hours. This significantly reduces project timelines while maintaining superior bond strength and structural integrity.

Ardex X 90 supports both thin and medium bed installations up to 5/8 inch, making it suitable for standard tiles as well as large format tile installations. Its creamy consistency ensures smooth, easy application with excellent coverage, reducing effort while improving installation accuracy. The extended open time and long pot life provide installers with flexibility, allowing precise tile placement and adjustments without compromising performance.

This versatile mortar is compatible with a wide range of tile materials, including porcelain, ceramic, glass, marble, granite, and most natural stone. Whether used over concrete substrates, uncoupling membranes, or waterproofing systems, it delivers strong, reliable adhesion that stands the test of time. Its advanced formulation also reduces the risk of efflorescence, helping maintain the visual appeal of tiled surfaces, especially in exterior or wet conditions.

Packaged in a durable 40 lb bag and formulated with zero VOC content, Ardex X 90 supports environmentally responsible construction while delivering professional-grade results. Whether you are a contractor working on a commercial project or a homeowner tackling a renovation, this mortar provides the performance, reliability, and efficiency needed to achieve high-quality installations in any setting.