ASTM C841-23
(Specification)Standard Specification for Installation of Interior Lathing and Furring
Standard Specification for Installation of Interior Lathing and Furring
ABSTRACT
This specification covers the minimum requirements for, and the methods of application of, interior lathing and furring to receive gypsum plaster applied. Other materials are not prohibited from being used provided that their physical characteristics and durability under conditions of usage are at least equal in performance to those described. All materials shall be kept dry, preferably by being stored inside. Where necessary to be stored outside, materials shall be stacked off the ground, supported on a level platform, and protected from the weather and surface contamination. Materials shall be neatly stacked flat with care taken to avoid damage to edges, ends, or surfaces. The materials to be used are the following: tie wire and hanger wire, gypsum lath, expanded metal lath, welded wire lath, woven wire lath, nails, screws, staples, paper, and accessories such as control joints, cornerite, channels, rod and flat hangers, clips, and striplath. In general, during installation, the following shall be required: application of gypsum lath to supports, application of gypsum lath to wood supports, application of gypsum lath to metal supports, studless solid partitions (gypsum lath and plaster), application of metal plaster bases to framing members, studless solid partitions (metal lath and plaster), suspended and furred ceilings (metal lath and gypsum lath construction), main runners, cross furring, and metal furring for walls.
SCOPE
1.1 This specification covers the minimum requirements for, and the methods of application of, interior lathing and furring to receive gypsum plaster applied in accordance with Specification C842. Other materials are not prohibited from being used provided that their physical characteristics and durability under conditions of usage are at least equal in performance to those described.
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 Details of construction for a specific assembly to achieve the required fire resistance shall be obtained from reports of fire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories.
1.4 Where a specific degree of sound control is required for plastered assemblies and constructions, details of construction shall be obtained from reports of acoustical tests of assemblies that have met the required or specified acoustical performance.
1.5 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.
1.6 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.
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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: C841 − 23
Standard Specification for
1
Installation of Interior Lathing and Furring
This standard is issued under the fixed designation C841; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
1.1 This specification covers the minimum requirements for,
and the methods of application of, interior lathing and furring
2. Referenced Documents
to receive gypsum plaster applied in accordance with Specifi-
2
cation C842. Other materials are not prohibited from being 2.1 ASTM Standards:
A641/A641M Specification for Zinc–Coated (Galvanized)
used provided that their physical characteristics and durability
under conditions of usage are at least equal in performance to Carbon Steel Wire
C11 Terminology Relating to Gypsum and Related Building
those described.
Materials and Systems
1.2 The values stated in inch-pound units are to be regarded
C514 Specification for Nails for the Application of Gypsum
as standard. The values given in parentheses are mathematical
Board
conversions to SI units that are provided for information only
C754 Specification for Installation of Steel Framing Mem-
and are not considered standard.
bers to Receive Screw-Attached Gypsum Panel Products
1.3 Details of construction for a specific assembly to
C842 Specification for Application of Interior Gypsum Plas-
achieve the required fire resistance shall be obtained from
ter
reports of fire-resistance tests, engineering evaluations, or
C847 Specification for Metal Lath
listings from recognized fire testing laboratories.
C933 Specification for Welded Wire Lath
C954 Specification for Steel Drill Screws for the Application
1.4 Where a specific degree of sound control is required for
of Gypsum Panel Products or Metal Plaster Bases to Steel
plastered assemblies and constructions, details of construction
Studs from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in
shall be obtained from reports of acoustical tests of assemblies
Thickness
that have met the required or specified acoustical performance.
C1002 Specification for Steel Self-Piercing Tapping Screws
1.5 This standard does not purport to address all of the
for Application of Gypsum Panel Products or Metal
safety concerns, if any, associated with its use. It is the
Plaster Bases to Wood Studs or Steel Studs
responsibility of the user of this standard to establish appro-
C1007 Specification for Installation of Load Bearing (Trans-
priate safety, health, and environmental practices and deter-
verse and Axial) Steel Studs and Related Accessories
mine the applicability of regulatory limitations prior to use.
C1032 Specification for Woven Wire Plaster Base
1.6 This international standard was developed in accor-
C1396 Specification for Gypsum Board
dance with internationally recognized principles on standard-
D1784 Classification System and Basis for Specification for
ization established in the Decision on Principles for the
Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlo-
Development of International Standards, Guides and Recom-
rinated Poly(Vinyl Chloride) (CPVC) Compounds
D3678 Specification for Rigid Poly(Vinyl Chloride) (PVC)
Interior-Profile Extrusions
1
This specification is under the jurisdiction of ASTM Committee C11 on
Gypsum and Related Building Materials and Systems and is the direct responsibility
of Subcommittee C11.03 on Specifications for the Application of Gypsum and Other
2
Products in Assemblies. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved March 1, 2023. Published April 2023. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1976. Last previous edition approved in 2018 as C841 – 03 (2018). Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/C0841-23. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C841 − 23
E492 Test Method for Laboratory Measurement of Impact 5.2 Materials shall be neatly stacked flat with care taken to
Sound Transmission Through Floor-Ceiling Assemblies avoid damage to edges, ends, or surfaces.
Using the Tapping Machine
6. Materials
2.2 National Associat
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: C841 − 03 (Reapproved 2018) C841 − 23
Standard Specification for
1
Installation of Interior Lathing and Furring
This standard is issued under the fixed designation C841; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope
1.1 This specification covers the minimum requirements for, and the methods of application of, interior lathing and furring to
receive gypsum plaster applied in accordance with Specification C842. Other materials are not prohibited from being used provided
that their physical characteristics and durability under conditions of usage are at least equal in performance to those described.
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 Details of construction for a specific assembly to achieve the required fire resistance shall be obtained from reports of
fire-resistance tests, engineering evaluations, or listings from recognized fire testing laboratories.
1.4 Where a specific degree of sound control is required for plastered assemblies and constructions, details of construction shall
be obtained from reports of soundacoustical tests of assemblies that have met the requirements of Test Methodrequired or specified
acoustical E492.performance.
1.5 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.
1.6 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A641/A641M Specification for Zinc–Coated (Galvanized) Carbon Steel Wire
C11 Terminology Relating to Gypsum and Related Building Materials and Systems
3
C37/C37M Specification for Gypsum Lath (Withdrawn 2004)
C514 Specification for Nails for the Application of Gypsum Board
C754 Specification for Installation of Steel Framing Members to Receive Screw-Attached Gypsum Panel Products
C842 Specification for Application of Interior Gypsum Plaster
1
This specification is under the jurisdiction of ASTM Committee C11 on Gypsum and Related Building Materials and Systems and is the direct responsibility of
Subcommittee C11.03 on Specifications for the Application of Gypsum and Other Products in Assemblies.
Current edition approved Oct. 1, 2018March 1, 2023. Published October 2018April 2023. Originally approved in 1976. Last previous edition approved in 20132018 as
C841 – 03 (2013).(2018). DOI: 10.1520/C0841-03R18.10.1520/C0841-23.
2
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 Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C841 − 23
C847 Specification for Metal Lath
C933 Specification for Welded Wire Lath
C954 Specification for Steel Drill Screws for the Application of Gypsum Panel Products or Metal Plaster Bases to Steel Studs
from 0.033 in. (0.84 mm) to 0.112 in. (2.84 mm) in Thickness
C1002 Specification for Steel Self-Piercing Tapping Screws for Application of Gypsum Panel Products or Metal Plaster Bases
to Wood Studs or Steel Studs
C1007 Specification for Installation of Load Bearing (Transverse and Axial) Steel Studs and Related Accessories
C1032 Specification for Woven Wire Plaster Base
C1396 Specification for Gypsum Board
D1784 Classification System and Basis for Specification for Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlorinated
Poly(Vinyl Chloride) (CPVC) Compounds
D3678 S
...
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