ASTM C1516-05
(Practice)Standard Practice for Application of Direct-Applied Exterior Finish Systems
Standard Practice for Application of Direct-Applied Exterior Finish Systems
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.
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.
1.3 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.
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Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: C1516 – 05
Standard Practice for
1
Application of Direct-Applied Exterior Finish Systems
This standard is issued under the fixed designation C1516; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope* C1325 Specification for Non-Asbestos Fiber-Mat Rein-
forced Cementitious Backer Units
1.1 This practice covers the minimum requirements and
E1825 Guide for Evaluation of Exterior Building Wall
procedures for field application of Direct-applied Exterior
Materials, Products, and Systems
Finish Systems (DEFS). Direct-applied exterior finish systems
are coating systems applied over various substrates with
3. Terminology
non-metallic reinforcing mesh, in which the base coat ranges
3.1 Definitions used in this standard shall be in accordance
1 3
from not less than ⁄16 in. (1.6 mm) to ⁄32 in. (2.4 mm) in dry
with Terminology C11.
thickness, depending on the mass of the reinforcing mesh.This
3.2 Definitions of Terms Specific to This Standard:
base coat is subsequently covered with a finish coat that is
3.2.1 accessories, n—preformed metal, fiberglass or plastic
available in a variety of textures and colors.
members used to form corners, edges, control joints, or
1.2 The values stated in inch-pound units are to be regarded
decorative effects.
as the standard. The metric values given in parentheses are
3.2.2 back wrapping, n—a deprecated term. See wrap.
approximate and are provided for information purposes only.
3.2.3 base coat, n—a material, either factory or field-mixed,
1.3 This standard may involve hazardous materials, opera-
used to cover the substrate and to encapsulate the reinforcing
tions and equipment. This standard does not purport to address
mesh.
all of the safety concerns, if any, associated with its use. It is
3.2.4 cold joint, n—the visible junction in an exterior finish.
the responsibility of the user of this standard to establish
3.2.5 cure, v—to develop the ultimate properties of a wet
appropriate safety and health practices and determine the
state material by a chemical process.
applicability of regulatory limitations prior to use.
3.2.6 dry, v—to develop the ultimate properties of a wet
2. Referenced Documents state material solely by evaporation of volatile ingredients.
2 3.2.7 durability, n—the capability of a building, assembly,
2.1 ASTM Standards:
component, product, or construction to maintain serviceability
C11 TerminologyRelatingtoGypsumandRelatedBuilding
over not less than a specified time.
Materials and Systems
3.2.8 embed, v—to encapsulate a non-metallic reinforcing
C1063 Specification for Installation of Lathing and Furring
mesh in either the joint compound or exterior finish.
to Receive Interior and Exterior Portland Cement-Based
3.2.9 expansion joint, n—a structural separation between
Plaster
building elements that allows independent movement without
C1177/C1177M Specification for Glass Mat Gypsum Sub-
damage to the assembly.
strate for Use as Sheathing
3.2.10 factory mixed, n—a material that is prepared at the
C1186 Specification for Flat Fiber-Cement Sheets
point of manufacture and is ready to use without the addition
C1278/C1278M Specification for Fiber-Reinforced Gyp-
of other materials, except possibly water to adjust consistency.
sum Panel
3.2.11 field mix, n—a material that is mixed in the field with
other components and/or water.
1
3.2.12 finish coat, n—the final wet state material, that
This practice is under the jurisdiction of ASTM Committee C11 on Gypsum
and Related Building Materials and Systems and is the direct responsibility of providescolororadditionaltexture,appliedoverthereinforced
Subcommittee C11.05 onApplication of Exterior Insulating and Finish Systems and
base coat.
Related Products.
3.2.13 flash set (quick set), n—the early hardening or
Current edition approved October 1, 2005. Published October 2005. Originally
stiffness in the working characteristics of a Portland-cement
approved in 2002. Last previous edition approved in 2002 as C1516 – 02. DOI:
10.1520/C1516-05.
paste, mortar, or concrete, usually with the evolution of
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
considerable heat; stiffness cannot be dispelled nor the plastic-
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
ity regained by further mixing without addition of water; also
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. known as “quick set.”
*A Summary of Changes section appears at the end of this standard.
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