ARDEX A 38™ Rapid Set Screed is a precision-engineered, polymer-modified, cement screed that sets, hardens and dries rapidly. Use for interior or exterior applications including swimming pools and other wet areas. ARDEX A 38 can be walked on 3 hours after application and can receive tile or stone after just 4 hours, even when used as an unbonded or floating screed. After only 1 day, the compressive strength and tensile strength of ARDEX A 38 exceed those that regular cement screeds achieve after 28 days.
Key Features
- Rapid hardening – walkable in 3 hours
- Suitable for bonded, unbonded or floating screeds
- Install tile and natural stone after only 4 hours
- Interior and exterior applications
- Ideal for swimming pools and other wet areas
- Install vinyl and wood floor coverings after just 48 hours
- Exceeds the 28-day strength properties of ordinary screeds after just 1 day
- Can be used with in-floor heating systems
Standards
SystemOne
Installation
Mixing Ratio: Approximately 250 lb. (113.4 kg) of screed sand and approximately 7.5 quarts (7.13 L) of water per 50 lb. (22.7 kg) bag
Coverage:
56 – 57 sq. ft. per bag at 3/4” (5 – 6 sq. m at 18 mm)
*Coverage will vary depending on the texture of the surface being smoothed
Performance
Compressive Strength (ASTM C109/mod – Air cure only): 6,300 psi (441.0 kg/sq. cm) at 28 days
Flexural Strength (ASTM C348): 775 psi (54.25 kg/sq. cm) at 28 days
Walkable: 3 hours
Install Tile / Waterproofing: 4 hours
VOC: 0
Packaging: 50 lb. (22.7 kg) bag
Storage: Store in a cool, dry area. Do not leave bags exposed to sun. Protect unused material by removing air from bag and sealing tightly.
Shelf Life: 1 year, if unopened
Warranty: ARDEX L.P. Standard Limited Warranty applies
