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Ardex X90 Outdoor Rapid-Set Flexible Tile & Stone Mortar

Ardex X90 Outdoor Rapid-Set Flexible Tile & Stone Mortar

by Ardex
SKU 25930
$56.49 - $4,019.00
$56.49
$56.49 - $4,019.00
$56.49
Color: Gray
Quantity: 40lb bag

ARDEX X 90 OUTDOOR™ redefines what outdoor mortar can do. Its unique polymer system and hydrophobic properties protect against moisture intrusion while maintaining high flexibility to absorb thermal and structural movement. Whether it’s blazing heat or driving rain, this mortar stands strong so your installation does too.

Call us at 877-712-6773 to place an order. Special order products typically ship within 7-10 business days.

More Details

ARDEX X 90 OUTDOOR™ uses ARDEX Weatherproof Technology™ to provide superior resistance against water and temperature fluctuations. Its rapid-set formula allows foot traffic in just 2–3 hours, even in challenging climates. Designed for porcelain, quarry, and natural stone, it’s the professional’s go-to mortar for patios, facades, decks, and pool surrounds.

  • Packaging: 40 lb (18 kg) bag
  • Color: Gray, White
  • Open Time: Approx. 30 minutes
  • Pot Life: Approx. 60 minutes
  • Groutable: After 2–3 hours
  • Application Areas: Exterior tile, facades, walkways, balconies, and wet areas
  • Tile Types: Porcelain, quarry, stone, pavers, and frost-resistant ceramics
  • Installation Temperature: 40°F to 95°F (5°C to 35°C)
  • Coverage: Varies by trowel size and tile format
Docs
  1. ARDEX-X-90-Product-Overview.pdf (Download)
  2. ARDEX-X-90-Technical-Data.pdf (Download)
  3. SDS_EN_ARDEX_X_90.pdf (Download)
Standards

SystemOne™
Microtec®Technology
Meets or exceeds ANSI 118.4
Meets or exceeds ANSI 118.11
Meets or exceeds ANSI 118.15
ISO Classification: C2 FTE S1
WeatherProof

Shipping & Return Policies

Shipping Policy

Refund & Return Policy

Engineered for Extreme Outdoor Performance

ARDEX X 90 OUTDOOR™ MicroteC3 Rapid-Set, Flexible Tile and Stone Mortar is a revolutionary innovation in mortar technology that is formulated with specialty, high-performance ARDEX cements, polymers and microfibers to deliver maximum protection against the harshest weather conditions and provide the highest levels of efflorescence resistance for exterior tile and stone applications. ARDEX X 90 OUTDOOR can be installed over substrates with temperatures as low as 40˚F (5˚C) and can withstand driving rains or be grouted in only 2 hours.

Features:

  • ARDEX MicroteC3 is the new level in mortar standards:
    • Highest levels of freeze thaw resistance – Tested at 150+ freeze thaw cycles
    • (7 times greater than the ANSI 118.15 standard requirement of 20 cycles)
    • Maximum efflorescence resistance
    • Outstanding rapid-setting properties, even at temperatures as low as 40˚F / 5˚C
    • Heavy and driving rain-resistant after only 2 hours
  • Ideal for tiling on concrete balconies, patios, swimming pools and high-load commercial areas
  • Traffic and grout after just 2 hours
  • Thin to medium bed installations up to 5/8” (15 mm)
  • Extended open time up to 30 minutes
  • Excellent bond strength for setting porcelain, glass, ceramic and most natural stone tiles*
  • Very creamy, easy-to-apply consistency
  • Extra long pot life of 60 minutes
  • For exterior or interior floors and walls