1. Scope

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.

1.5 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.

ASTM Standards

C11 Terminology Relating to Gypsum and Related Building Materials and Systems

C79/C79M Specification for Gypsum Sheathing Board

C150 Specification for Portland Cement

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

C1280 Specification for Application of Exterior Gypsum Panel Products for Use as Sheathing

C1289 Specification for Faced Rigid Cellular Polyisocyanurate Thermal Insulation Board

C1325 Specification for Non-Asbestos Fiber-Mat Reinforced Cementitious Backer Units

C1382 Test Method for Determining Tensile Adhesion Properties of Sealants When Used in Exterior Insulation and Finish Systems (EIFS) Joints

C1472 Guide for Calculating Movement and Other Effects When Establishing Sealant Joint Width

C1481 Guide for Use of Joint Sealants with Exterior Insulation and Finish Systems (EIFS)

E1825 Guide for Evaluation of Exterior Building Wall Materials, Products, and Systems

E2110 Terminology for Exterior Insulation and Finish Systems (EIFS)

Keywords

Class PI; EIFS; exterior insulation and finish system;

ICS Code

ICS Number Code 29.035.10 (Paper and board insulating materials)

DOI: 10.1520/C1535-05

ASTM International is a member of CrossRef.