ARDEX A 38™ Rapid Set Screed

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

Specification

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

Technical specification

Unique ref.ardex-a-38
Product familyTile & Stone Installation System
Product groupScreeds/Mudbeds
TypeObject (single object)
Date of publishing2019-06-21
Edition number1

Links

Product urlhttps://ardex.co.uk/product/ardex-a-38-rapid-drying-screed/
Installation instructionshttps://ardex.co.uk/product/ardex-a-38-rapid-drying-screed/
Product certificationhttps://ardex.co.uk/product/ardex-a-38-rapid-drying-screed/
Technical descriptionhttps://ardex.co.uk/product/ardex-a-38-rapid-drying-screed/

Material mainCementitious
Designed inGermany
Manufactured inGermany

Classification

BIMobject CategoryFlooring - Floor Tiles
IFC classificationFloor
UNSPSC nameConcrete tiles or flagstones
UNSPSC code30131703
Uniclass 2015 CodePr_20_29_88
Uniclass 2015 DescriptionTile and fabric fasteners
CSI MasterFormat 2014 Code09 66 13
CSI MasterFormat 2014 TitlePortland Cement Terrazzo Flooring
OmniClass Number23-15 17 13 13
OmniClass TitleTile Flooring
CSI UniFormat II CodeC3020
CSI UniFormat II TitleFloor Finishes

Region availability

North America	Europe	Oceania	Asia
Anguilla	Austria	Australia	Singapore
Antigua and Barbuda	Czech Republic	New Zealand	Thailand
Aruba	Denmark		Türkiye
Barbados	France
Belize	Germany
Bermuda	Ireland
British Virgin Islands	Italy
Canada	Poland
Caribbean Netherlands	Russia
Cayman Islands	Spain
Collectivity of Saint Martin	Switzerland
Costa Rica	United Kingdom
Cuba
Curaçao
Dominica
Dominican Republic
El Salvador
Greenland
Grenada
Guadeloupe
Guatemala
Haiti
Honduras
Jamaica
Martinique
Mexico
Montserrat
Nicaragua
Panama
Puerto Rico
Saint Kitts and Nevis
Saint Lucia
Saint Pierre and Miquelon
Saint Vincent and the Grenadines
Saint-Barthélemy
Sint Maarten
The Bahamas
Trinidad and Tobago
Turks and Caicos Islands
U.S. Virgin Islands
United States