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Self-Leveling Underlayments

Products

ARDEX GS-4™

Self-Leveling Repair Underlayment for Distressed Gypsum and Wood Subfloors

  • Use over gypsum and wood substrates
  • Suitable for use with in-floor hydronic and electric radiant heating systems
  • Use for interior, above-grade floors
ARDEX GS-4
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  • ARDEX GS-4

Information ARDEX GS-4™

Choose Over Gypsum or Wood

ARDEX GS-4™ Self-Leveling Repair Underlayment for Distressed Gypsum and Wood Subfloors is a blend of high strength gypsum and Portland cements as well as powdered polymers used to repair existing above-grade wood and gypsum floors prior to the installation of new floor coverings.

Key Features

  • A blend of high strength gypsum and Portland cements as well as powdered polymers
  • Use over gypsum and wood substrates
  • Suitable for use with in-floor hydronic and electric radiant heating systems
  • Use for interior, above-grade floors only
  • Install up to 2″ (5 cm) neat and up to 5″ (12.7 cm) with aggregate
  • Walkable in 3 hours
  • Install floor coverings in as little as 2 – 3 days

Standards

SystemOne
Tested in Accordance with ASTM C1708

Technical Data ARDEX GS-4™

Installation

Mixing Ratio: 4 quarts (3.8 L) of water per 50 lb. (22.7 kg) bag
Coverage: 22 sq. ft. per bag at 1/4” (2 sq. m at 6 mm)
Coverage will vary depending on the texture of the surface being smoothed.

Performance

Flow Time: 10 minutes
Compressive Strength (ASTM C109/mod – Air Cure Only): 5,500 psi (385 kg/sq. cm.) at 28 days
Flexural Strength (ASTM C348): 1,500 psi (105 kg/sq. cm.) at 28 days
Walkable: 2 – 3 hours
Install Flooring: When confirmed dry via mat testing; estimated 2 – 3 days
VOC: 0
Packaging: 50 lb. (22.7 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. Also eligible for the ARDEX/HENRY SystemOne™ Warranty when used in conjunction with select HENRY® Flooring Adhesives.

For complete product technical information, click on the Downloads tab and open the Technical Data download.

Information ARDEX GS-4™

Choose Over Gypsum or Wood

ARDEX GS-4™ Self-Leveling Repair Underlayment for Distressed Gypsum and Wood Subfloors is a blend of high strength gypsum and Portland cements as well as powdered polymers used to repair existing above-grade wood and gypsum floors prior to the installation of new floor coverings.

Key Features

  • A blend of high strength gypsum and Portland cements as well as powdered polymers
  • Use over gypsum and wood substrates
  • Suitable for use with in-floor hydronic and electric radiant heating systems
  • Use for interior, above-grade floors only
  • Install up to 2″ (5 cm) neat and up to 5″ (12.7 cm) with aggregate
  • Walkable in 3 hours
  • Install floor coverings in as little as 2 – 3 days

Standards

SystemOne
Tested in Accordance with ASTM C1708

Technical Data ARDEX GS-4™

Installation

Mixing Ratio: 4 quarts (3.8 L) of water per 50 lb. (22.7 kg) bag
Coverage: 22 sq. ft. per bag at 1/4” (2 sq. m at 6 mm)
Coverage will vary depending on the texture of the surface being smoothed.

Performance

Flow Time: 10 minutes
Compressive Strength (ASTM C109/mod – Air Cure Only): 5,500 psi (385 kg/sq. cm.) at 28 days
Flexural Strength (ASTM C348): 1,500 psi (105 kg/sq. cm.) at 28 days
Walkable: 2 – 3 hours
Install Flooring: When confirmed dry via mat testing; estimated 2 – 3 days
VOC: 0
Packaging: 50 lb. (22.7 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. Also eligible for the ARDEX/HENRY SystemOne™ Warranty when used in conjunction with select HENRY® Flooring Adhesives.

For complete product technical information, click on the Downloads tab and open the Technical Data download.

Case Studies: ARDEX GS-4™

Case Studies

We are proud of our amazing case studies

ARDEX has been at the forefront of the tiling and flooring industries for over 50 years. ARDEX continue to offer unbeatable quality and cost effective solutions for building projects covering all sectors of business and commerce, such as retail outlets, leisure centres, health authorities, transport premises, art and educational institutions.

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