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 ARDEX GS-4™

 
Self-Leveling Repair Underlayment for Distressed Gypsum and Wood Subfloors​

Choose Over Gypsum or Wood

Install over:

Gypsum and wood substrates. It also is recommended for above grade in-floor hydronic and electric radiant heat.
 
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Key Features

  • Blend of high strength gypsum and Portland cements
  • Pour with the Rover® or pump with the AMP®
  • Interior use
  • Use above grade
  • Mixes with water

 Installation

  • General priming recommendations:
    • Gypsum, wood: ARDEX P 51TM Primer 
  • Packaging: 50 lb. (22.7 kg)
  • Coverage: 22 sq. ft. per bag at 1/4” (2 m2 at 6 mm)
  • Thickness:
    • Levels at 1/4” (6 mm),
    • Installs from 1/8” (3 mm) up to 2” (5 cm) neat
    • Up to 5” (13 cm) with aggregate
    • Can be tapered to 1/16” (1.5 mm)
  • Flow time: 10 minutes
  • Walkable: 3 hours
  • Install floor coverings: 3 days

Performance

  • ASTM C191 Initial Set: Approx. 30 minutes
  • ASTM C191 Final Set: Approx. 60 minutes
  • ASTM C109 mod (air cure only) Compressive Strength: 5500 psi (386 kg/cm2) at 28 days
  • ASTM C348 Flexural Strength: 1500 psi (105 kg/cm2) at 28 days
  • VOC: 0

 

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