ASTM C919-19
(Practice)Standard Practice for Use of Sealants in Acoustical Applications
Standard Practice for Use of Sealants in Acoustical Applications
SIGNIFICANCE AND USE
4.1 Walls, ceilings, and floors in building construction, especially those that are of lightweight construction, and that are designed to reduce or limit sound transmission, can have undesirable sound transmission characteristics if care is not taken to seal joints, voids, and penetrations that typically occur. Unsealed joints, voids, and penetrations will substantially increase the sound transmission characteristics of these types of construction. By sealing them the transmission of sound can be substantially diminished by eliminating “flanking paths.”
SCOPE
1.1 This practice provides information for the use of sealants to reduce sound transmission characteristics of interior walls, ceilings, and floors by proper application of sealants to joints, voids, and penetrations normally found in building construction, which are commonly referred to as “flanking paths.”
1.2 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.
1.3 This standard does not purport to address fire stopping or safing requirements for joints, voids, and penetrations through fire-rated wall, ceiling, and floor assemblies. Additional requirements may be necessary for fire-rated assemblies to meet the applicable building code provisions.
1.4 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.
1.5 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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Designation: C919 − 19
Standard Practice for
1
Use of Sealants in Acoustical Applications
This standard is issued under the fixed designation C919; 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 C920 Specification for Elastomeric Joint Sealants
C1193 Guide for Use of Joint Sealants
1.1 This practice provides information for the use of seal-
C1520 Guide for Paintability of Latex Sealants
ants to reduce sound transmission characteristics of interior
C1620 Specification for Aerosol Polyurethane and Aerosol
walls, ceilings, and floors by proper application of sealants to
Latex Foam Sealants
joints, voids, and penetrations normally found in building
C1642 Practice for DeterminingAir Leakage Rates ofAero-
construction, which are commonly referred to as “flanking
sol Foam Sealants and Other Construction Joint Fill and
paths.”
Insulation Materials
1.2 Thecommitteewithjurisdictionoverthisstandardisnot
C1852 Guide for Product Selection/Delivery Systems for
aware of any comparable standards published by other orga-
Aerosol Foam Sealants and Adhesives
nizations.
E90 Test Method for Laboratory Measurement of Airborne
Sound Transmission Loss of Building Partitions and
1.3 This standard does not purport to address fire stopping
or safing requirements for joints, voids, and penetrations Elements
E336 Test Method for Measurement of Airborne Sound
through fire-rated wall, ceiling, and floor assemblies. Addi-
tional requirements may be necessary for fire-rated assemblies Attenuation between Rooms in Buildings
E413 Classification for Rating Sound Insulation
to meet the applicable building code provisions.
3
2.2 HUD Standard:
1.4 This standard does not purport to address all of the
HUD Minimum Property Standards for Housing, Section
safety concerns, if any, associated with its use. It is the
4910.1
responsibility of the user of this standard to establish appro-
4
2.3 IBC Standard:
priate safety, health, and environmental practices and deter-
International Building Code (IBC), Section 1206
mine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accor-
3. Terminology
dance with internationally recognized principles on standard-
3.1 Definitions—For definitions of terms used in this rec-
ization established in the Decision on Principles for the
ommended practice, see Terminologies C717 and C634.
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
4. Significance and Use
Barriers to Trade (TBT) Committee.
4.1 Walls, ceilings, and floors in building construction,
2. Referenced Documents
especially those that are of lightweight construction, and that
2
are designed to reduce or limit sound transmission, can have
2.1 ASTM Standards:
undesirable sound transmission characteristics if care is not
C634 Terminology Relating to Building and Environmental
takentosealjoints,voids,andpenetrationsthattypicallyoccur.
Acoustics
Unsealed joints, voids, and penetrations will substantially
C717 Terminology of Building Seals and Sealants
increase the sound transmission characteristics of these types
C834 Specification for Latex Sealants
of construction. By sealing them the transmission of sound can
be substantially diminished by eliminating “flanking paths.”
1
This practice is under the jurisdiction of ASTM Committee C24 on Building
5. Sound Transmission Requirements
Seals and Sealants and is the direct responsibility of Subcommittee C24.10 on
Specifications, Guides and Practices.
5.1 The construction industry has adopted Sound Transmis-
Current edition approved May 1, 2019. Published June 2019. Originally
sionClass(STC)units,asdefinedinTerminologyC634,torate
approved in 1979. Last previous edition approved in 2018 as C919 – 18. DOI:
10.1520/C0919-19.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from Superintendent of Documents, U.S. Government Printing
Standards volume information, refer to the standard’s Document Summary page on Office.
4
the ASTM website. Available from International Code Council (ICC).
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C919 − 19
the sound transmission properties of walls, ceilings, and floors.
TheSTCisdeterminedinaccordancewithClassificationE413.
The test data are obtained in accordance with Test Methods
E90 and E336.
5.2 Various building and other government
...
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: C919 − 18 C919 − 19
Standard Practice for
1
Use of Sealants in Acoustical Applications
This standard is issued under the fixed designation C919; 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
1.1 This practice provides information for the use of sealants to reduce sound transmission characteristics of interior walls,
ceilings, and floors by proper application of sealants to joints, voids, and penetrations normally found in building construction,
which are commonly referred to as “flanking paths.”
1.2 The committee with jurisdiction over this standard is not aware of any comparable standards published by other
organizations.
1.3 This standard does not purport to address fire stopping or safing requirements for joints, voids, and penetrations through
fire-rated wall, ceiling, and floor assemblies. Additional requirements may be necessary for fire-rated assemblies to meet the
applicable building code provisions.
1.4 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.
1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other
organizations.
1.5 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:
C634 Terminology Relating to Building and Environmental Acoustics
C717 Terminology of Building Seals and Sealants
C834 Specification for Latex Sealants
C920 Specification for Elastomeric Joint Sealants
C1193 Guide for Use of Joint Sealants
C1520 Guide for Paintability of Latex Sealants
C1620 Specification for Aerosol Polyurethane and Aerosol Latex Foam Sealants
C1642 Practice for Determining Air Leakage Rates of Aerosol Foam Sealants and Other Construction Joint Fill and Insulation
Materials
C1852 Guide for Product Selection/Delivery Systems for Aerosol Foam Sealants and Adhesives
E90 Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements
E336 Test Method for Measurement of Airborne Sound Attenuation between Rooms in Buildings
E413 Classification for Rating Sound Insulation
3
2.2 HUD Standard:
HUD Minimum Property Standards for Housing, Section 4910.1
1
This practice is under the jurisdiction of ASTM Committee C24 on Building Seals and Sealants and is the direct responsibility of Subcommittee C24.10 on Specifications,
Guides and Practices.
Current edition approved July 1, 2018May 1, 2019. Published August 2018June 2019. Originally approved in 1979. Last previous edition approved in 20122018 as
C919 – 12C919 – 18.(2017). DOI: 10.1520/C0919-18.10.1520/C0919-19.
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.
3
Available from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.Office.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
C919 − 19
4
2.3 IBC Standard:
International Building Code (IBC), Section 1206
3. Terminology
3.1 Definitions—For definitions of terms used in this recommended practice, see Terminologies C717 and C634.
4. Significance and Use
4.1 Walls, ceilings, and floors in building construction, especially those that are of lightweight construction, and that are
designed to reduce or limit sound transmission, can have undesirable sound transmission characteristics if care is not taken to seal
joints, voids, and penetrations that typically occur. Unsealed joints, voids, and penetrations will substantially increase the sound
transmission characteristics of these types of construction. By sealing them the transmis
...
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