Ardex X 90 OUTDOOR MicroteC3 Rapid-Set - Flexible Modified Tile and Stone Mortar - 40 lb bag Gray

Rapid-set, flexible tile and stone mortar designed for extreme outdoor conditions. Offers superior freeze-thaw and efflorescence resistance, fast-setting even at low temperatures, and is ideal for exterior floors, walls, patios, balconies, pools, and commercial areas.
$57.60

Brand: Ardex

Availability: Sold In Store - Ships From Store (52 available in store). (More Info)

Shipping: Standard (More Info)

SKU
AR X90 OUTDOOR G
  • Buy 64 for $52.99 each and save 8%

Ardex X 90 OUTDOOR Tile and Stone Mortar — Freeze-Thaw? No Problem

Ardex X 90 OUTDOOR is a high-performance mortar engineered for the harshest weather conditions. Formulated with specialty cements, polymers, and microfibers, it provides maximum freeze-thaw resistance (tested at 150+ cycles, far exceeding ANSI 118.15 standards) and excellent efflorescence protection.

This mortar sets rapidly even at temperatures as low as 40°F (5°C), and surfaces can withstand heavy rain or be grouted after just 2 hours. Its creamy, easy-to-apply consistency, extended open time, and strong adhesion make it perfect for porcelain, glass, ceramic, and most natural stone tiles. Ideal for exterior and interior floors and walls, including high-load commercial areas, swimming pools, patios, and balconies.

Key Features

  • Highest levels of freeze-thaw resistance – tested at 150+ cycles (7x ANSI standard)
  • Maximum efflorescence resistance
  • Outstanding rapid-setting properties, even at 40°F / 5°C
  • Heavy and driving rain-resistant after only 2 hours
  • Suitable for 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 porcelain, glass, ceramic, and most natural stone tiles
  • Creamy, easy-to-apply consistency
  • Extra long pot life of 60 minutes
  • For exterior and interior floors and walls

Installation:

Mixing Ratio: 5.75 – 6.75 quarts (5.4 – 6.4 L) of water per 40 lbs. (18 kg) bag
(For smaller batches, use 2.5 parts powder to 1 part water by volume)

Approximate Coverage:

  • 1/4" x 1/4" Sq. Notch trowel; 95 sq. ft. (8.8 sq. m)
  • 1/4" x 3/8" x 1/4" Sq. Notch trowel; 75 sq. ft. (7 sq. m)
  • 1/2" x 1/2" Sq. Notch trowel; 55 sq. ft. (5 sq. m)

Performance:

  • Open Time: Up to 30 minutes
  • Pot Life: Approx. 1 hour
  • Adjustment Time: Approx. 15 – 20 minutes
  • Time to Grout: 2 hours
  • Colors: Gray, White
  • VOC: 0
  • Packaging: 40 lb. (18 kg) bag
  • Storage: Store in a cool, dry area. Do not leave bags exposed to sun.
  • Shelf Life: 1 year, if unopened
  • Warranty: Ardex L.P. Standard Limited Warranty applies

Calculator Ardex X 90

More Information
SKUAR X90 OUTDOOR G
UPC709850006834
Weight (lbs.)40.00
Non-ReturnableNo
ManufacturerArdex
Manufacturer Part Number25930
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