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ASTM C846-16(2021)

(Practice)

Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing

Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing

SIGNIFICANCE AND USE
4.1 This standard provides recommendations for the installation in a safe and effective manner. Actual conditions may vary greatly, and additional care should be taken to ensure a safe and effective installation.  
4.2 This standard presents requirements that are general in nature and considered practical. They are not intended as specific recommendations. The user should consult the manufacturer for recommended application methods and procedures.  
4.3 This standard does not address the applicability of regulatory limitations. This is the responsibility of the user.
SCOPE
1.1 This practice covers the requirements for storing, handling, and application of cellulosic fiber insulating board products.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

Status
Published
Publication Date
28-Feb-2021
ICS
91.100.60 - Thermal and sound insulating materials
Technical Committee
C16 - Thermal Insulation
Drafting Committee
C16.40 - Insulation Systems
Current Stage
Ref Project

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ASTM C846-16(2021) - Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall SheathingASTM C846-16(2021) - Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing
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ASTM C846-16(2021) - Standard Practice for Application of Cellulosic Fiber Insulating Board for Wall Sheathing
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Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: C846 − 16 (Reapproved 2021)
Standard Practice for
Application of Cellulosic Fiber Insulating Board for Wall
1
Sheathing
This standard is issued under the fixed designation C846; 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 3. Terminology
1.1 This practice covers the requirements for storing, 3.1 Definitions of Terms Specific to This Standard:
handling, and application of cellulosic fiber insulating board 3.1.1 exterior finish—the shingle, lap, or panel siding
products.
material, masonry veneer, or stucco applied over the sheathing
as a protective, decorative exterior finish of the building.
1.2 The values stated in inch-pound units are to be regarded
as standard. The values given in parentheses are mathematical 3.1.2 fasteners—nails, staples, or screws used for applica-
conversions to SI units that are provided for information only tion of the sheathing.
and are not considered standard.
3.1.3 framing members—those portions of the studs,
1.3 This standard does not purport to address all of the headers, bracing, and blocking which serve to receive the
safety concerns, if any, associated with its use. It is the
sheathing. Framing members can be wood or metal.
responsibility of the user of this standard to establish appro-
3.1.4 regular wall sheathing—described in Definitions
priate safety, health, and environmental practices and deter-
D1554 and Specification C208. It is 4 ft (1.22 m) wide with
mine the applicability of regulatory limitations prior to use.
1
square-cut edges on all sides and ⁄2 in. (12.7 mm) in thickness.
1.4 This international standard was developed in accor-
3.1.5 structural wall sheathing—described in Definitions
dance with internationally recognized principles on standard-
D1554 and Specification C208. When installed in accordance
ization established in the Decision on Principles for the
with Section 7, it is considered a structural sheathing providing
Development of International Standards, Guides and Recom-
1
adequate racking resistance. It is 4 ft (1.22 m) wide and ⁄2 in.
mendations issued by the World Trade Organization Technical
25
(12.7 mm) or ⁄32 in. (19.8 mm) in thickness with square-cut
Barriers to Trade (TBT) Committee.
edges on all sides.
2. Referenced Documents
3.1.6 vertical application—sheathing applied with the long
2
edges parallel to the studs.
2.1 ASTM Standards:
C208 Specification for Cellulosic Fiber Insulating Board
4. Significance and Use
D1554 Terminology Relating to Wood-Base Fiber and Par-
ticle Panel Materials
4.1 This standard provides recommendations for the instal-
2.2 Federal Specifications:
lation in a safe and effective manner. Actual conditions may
FF-N-105-B with Interim Amendment 4 Nails, Brads,
vary greatly, and additional care should be taken to ensure a
3
Staples and Spikes: Wire Cut and Wrought
safe and effective installation.
UU-B-790-A Building Paper, Vegetable Fiber: (Kraft,
3 4.2 This standard presents requirements that are general in
Waterproofed, Water Repellent and Fire Resistant)
nature and considered practical. They are not intended as
specific recommendations. The user should consult the manu-
1
This practice is under the jurisdiction of ASTM Committee C16 on Thermal
facturerforrecommendedapplicationmethodsandprocedures.
Insulation and is the direct responsibility of Subcommittee C16.40 on Insulation
Systems. 4.3 This standard does not address the applicability of
Current edition approved March 1, 2021. Published April 2021. Originally
regulatory limitations. This is the responsibility of the user.
approved in 1976. Last previous edition approved in 2016 as C846 – 16. DOI:
10.1520/C0846-16R21.
2
5. Materials
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.1 Sheathing shall conform to Specification C208.
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
5.2 Nails for application of sheathing to wood framing shall
3
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
conform to Federal Specification FF-N-105-B, including In-
Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://
www.dodssp.daps.mil. terim Amendment 4, and shall be in accordance with Table 1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.  
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SCOPE
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