ARDEX A 38™

Rapid Set Screed

• Rapid hardening; walk-able in 3 hours
• Install tile or stone after only 4 hours
• Suitable for bonded, unbonded or floating screeds

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

TECHNICAL DATA ARDEX A 38™

InstallationMixing 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) bagCoverage: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 smoothedPerformanceCompressive Strength (ASTM C109/mod – Air cure only): 6,300 psi (441.0 kg/sq. cm) at 28 daysFlexural Strength (ASTM C348): 775 psi (54.25 kg/sq. cm) at 28 daysWalkable: 3 hoursInstall Tile / Waterproofing: 4 hoursVOC: 0Packaging: 50 lb. (22.7 kg) bagStorage: 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 unopenedWarranty: ARDEX L.P. Standard Limited Warranty applies

Ardex Sand Guide for Screeds

ARDEX-Sand-Guide-For-Screeds

Product overview

ARDEX-A-38-Product-Overview

Technical Data

ARDEX-A-38-Technical-Data

Safety Data Sheet

ARDEX-A-38-SDS

Specification

Tile-and-Stone-Installation-Systems-Screeds_Mudbeds-ARDEX-A-38-Specification