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Significance and Use
This practice provides minimum requirements for the application of Direct-applied Exterior Finish Systems. The requirements for materials, mixtures, and details shall be contained in the project plans and specifications.
1.1 This practice covers the minimum requirements and procedures for field application of Direct-applied Exterior Finish Systems (DEFS). Direct-applied exterior finish systems are coating systems applied over various substrates with non-metallic reinforcing mesh, in which the base coat ranges from not less than 1/16in. (1.6 mm) to 3/32 in. (2.4 mm) in dry thickness, depending on the mass of the reinforcing mesh. This base coat is subsequently covered with a finish coat that is available in a variety of textures and colors.
1.2 The values stated in inch-pound units are to be regarded as the standard. The metric values given in parentheses are approximate and are provided for information purposes only.
1.3 This standard may involve hazardous materials, operations and equipment. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C11 Terminology Relating to Gypsum and Related Building Materials and Systems
C1063 Specification for Installation of Lathing and Furring to Receive Interior and Exterior Portland Cement-Based Plaster
C1177/C1177M Specification for Glass Mat Gypsum Substrate for Use as Sheathing
C1186 Specification for Flat Fiber-Cement Sheets
C1278/C1278M Specification for Fiber-Reinforced Gypsum Panel
C1325 Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer Units
E1825 Guide for Evaluation of Exterior Building Wall Materials, Products, and Systems
ICS Number Code 91.100.99 (Other construction materials)
UNSPSC Code 30150000(Exterior finishing materials)
ASTM C1516-05(2011), Standard Practice for Application of Direct-Applied Exterior Finish Systems, ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top