ASTM C919-08

Standard Practice for Use of Sealants in Acoustical Applications

SIGNIFICANCE AND USE
Construction utilizing lightweight walls and floors can have undesirable sound transmission characteristics if care is not taken to seal joints and voids that are common to this type of construction. By sealing these penetrations the transmission of sound can be diminished.
SCOPE
1.1 This practice is a guide for the use of sealants to reduce the sound transmission characteristics of interior walls, ceilings, and floors by proper application of sealants to joints, voids, and penetrations normally found in building construction.
1.2 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.
1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.

General Information

• Status: Historical
• Publication Date: 30-Apr-2008
• ICS: 91.100.50 - Binders. Sealing materials
• ICS: 91.120.20 - Acoustics in building. Sound insulation
• Technical Committee: C24 - Building Seals and Sealants
• Drafting Committee: C24.10 - Specifications, Guides and Practices

Relations

• Replaces: ASTM C919-02 - Standard Practice for Use of Sealants in Acoustical Applications
• Effective Date: 01-May-2008
• Replaced By: ASTM C919-12 - Standard Practice for Use of Sealants in Acoustical Applications
• Effective Date: 01-Jun-2012
• Referred By: ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
• Effective Date: 01-May-2008

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C919–08
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 E497 Practice for Installing Sound-Isolating Lightweight
3
Partitions
1.1 This practice is a guide for the use of sealants to reduce
4
2.2 DHUD Standards:
the sound transmission characteristics of interior walls, ceil-
HUDMinimumPropertyStandardsforOneandTwoFamily
ings, and floors by proper application of sealants to joints,
Housing, Section 4900.1
voids, and penetrations normally found in building construc-
HUD Minimum Property Standard for Multi Family Hous-
tion.
ing, Section 4910.1
1.2 This standard does not purport to address all of the
HUD Minimum Property Standard for Care Type Housing,
safety concerns, if any, associated with its use. It is the
Section 4920.1
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
3. Significance and Use
bility of regulatory limitations prior to use.
3.1 Construction utilizing lightweight walls and floors can
1.3 Thecommitteewithjurisdictionoverthisstandardisnot
have undesirable sound transmission characteristics if care is
aware of any comparable standards published by other orga-
not taken to seal joints and voids that are common to this type
nizations.
of construction. By sealing these penetrations the transmission
2. Referenced Documents of sound can be diminished.
2
2.1 ASTM Standards:
4. Sound Transmission Class
C570 Specification for Oil- and Resin-Base Caulking Com-
3
4.1 The construction industry has adopted Sound Transmis-
pound for Building Construction
sion Class (STC) units (defined in Definitions C634) to rate the
C634 Terminology Relating to Building and Environmental
sound barrier properties of walls, ceilings, and floors.The STC
Acoustics
is determined in accordance with Classification E413. The test
C834 Specification for Latex Sealants
data are obtained in accordance with Test Methods E90 or
C920 Specification for Elastomeric Joint Sealants
E336.
E90 Test Method for Laboratory Measurement of Airborne
Sound Transmission Loss of Building Partitions and Ele-
NOTE 1—For example, The Department of Housing and Urban Devel-
ments opment (DHUD) has issued the following three standards dealing with the
STC limitation in various housing units:
E336 Test Method for Measurement of Airborne Sound
HUD Minimum Property Standard for One and Two Family Housing,
Attenuation between Rooms in Buildings
Section 4900.1;
E413 Classification for Rating Sound Insulation
HUD Minimum Property Standard for Multi Family Housing, Section
4910.1; and
HUD Minimum Property Standard for Care Type Housing, Section
1
This practice is under the jurisdiction of ASTM Committee C24 on Building
4920.1
Seals and Sealants and is the direct responsibility of Subcommittee C24.10 on
Specifications, Guides and Practices.
5. Need to Seal Openings
Current edition approved May 1, 2008. Published June 2008. Originally
approved in 1979. Last previous edition approved in 2002 as C919 – 02. DOI:
5.1 The effect of unsealed openings on the STC of partition
10.1520/C0919-08.
2 walls is shown in Fig. 1. This chart also shows the improve-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM ment of the STC when openings are sealed. It should be
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
3 4
Withdrawn. The last approved version of this historical standard is referenced Available from Superintendent of Documents, U.S. Government Printing
on www.astm.org. Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C919–08
FIG. 1 Effect of Unsealed Hole Openings on STC-Rated Test Wall,
3.8by2.4m(12ft6in.by8ft)
recognized for slit openings that the STC values may be
different from the STC value for a hole opening.
5.2 Fig. 2 shows examples of how sound travels through
openings in walls and how sealing may serve to minimize
soundtransmission.FurtherexamplesmaybefoundinPractice
E497.
FIG. 2 Examples of Achieving an Effective Sound Barrier and
Maintaining the Designed STC Value of Partition Systems
6. Positioning of Sealants
6.1 Fig. 3 illustrates placement of beads of sealant to
these sealants tend to stain the walls. Specification C570
improve the STC from a
...

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:C919–02 Designation:C919–08
Standard Practice for
1
Use of Sealants in Acoustical Applications
This standard is issued under the fixed designation C 919; 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 is a guide for the use of sealants to reduce the sound transmission characteristics of interior walls, ceilings,
and floors by proper application of sealants to joints, voids, and penetrations normally found in building construction.
1.2 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.
1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other
organizations.
2. Referenced Documents
2
2.1 ASTM Standards:
C 570 Specification for Oil- and Resin-Base Caulking Compound for Building Construction
C 634 Terminology Relating to Building and Environmental Acoustics
C 834 Specification for Latex Sealants
C 920 Specification for Elastomeric Joint Sealants
E 90 Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements
E 336 Test Method for Measurement of Airborne Sound Insulation Attenuation between Rooms in Buildings
E 413 Classification for Rating Sound Insulation
E 497 Practice for Installing Sound-Isolating Lightweight Partitions
2.2 Federal Specifications:
TT-S-1657(COM-NBS)InterimFederalSpecificationforSealingCompound—SingleComponent,ButylRubberBased,Solvent
Release Type (for Buildings and Other Type of Construction)
TT-C-598C(COM-NBS) Interim Federal Specification for Caulking Compound, Oil and Resin Base Type (for Building
4
Construction)
3
2.3 DHUD Standards:
HUD Minimum Property Standards for One and Two Family Housing, Section 4900.1
HUD Minimum Property Standard for Multi Family Housing, Section 4910.1
HUD Minimum Property Standard for Care Type Housing, Section 4920.1
3. Significance and Use
3.1 Construction utilizing lightweight walls and floors can have undesirable sound transmission characteristics if care is not
taken to seal joints and voids that are common to this type of construction. By sealing these penetrations the transmission of sound
can be diminished.
4. Sound Transmission Class
4.1 The construction industry has adopted Sound Transmission Class (STC) units (defined in Definitions C 634) to rate the
soundbarrierpropertiesofwalls,ceilings,andfloors.TheSTCisdeterminedinaccordancewithClassificationE 413.Thetestdata
are obtained in accordance with Test Methods E 90 or E 336.
1
ThispracticeisunderthejurisdictionofASTMCommitteeC24onBuildingSealsandSealantsandisthedirectresponsibilityofSubcommitteeC24.10onSpecifications,
Guides and Practices.
Current edition approved Jan. 10, 2002. Published March 2002. Originally published as C919–79. Last previous edition C919–98.
Current edition approved May 1, 2008. Published June 2008. Originally approved in 1979. Last previous edition approved in 2002 as C 919 – 02.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
, Vol 04.07.volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Annual Book of ASTM Standards, Vol 04.06.
3
Available from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C919–08
NOTE 1—For example, The Department of Housing and Urban Development (DHUD) has issued the following three standards dealing with the STC
limitation in various housing units:
HUD Minimum Property Standard for One and Two Family Housing,
Section 4900.1;
HUD Minimum Property Standard for Multi Family Housing, Section
4910.1; and
HUD Minimum Property Standard for Care Type Housing, Section
4920.1
5. Need to Seal Openings
5.1 The effect of unsealed openings on the STC of partition walls is shown in Fig. 1. This chart also shows the improvement
of the STC when openings are sealed. It should be
...