ASTM C919-02

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: 09-Jan-2002
• 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 C919-98 - Standard Practice for Use of Sealants in Acoustical Applications
• Effective Date: 10-Jan-2002
• Replaced By: ASTM C919-08 - Standard Practice for Use of Sealants in Acoustical Applications
• Effective Date: 01-May-2008
• Referred By: ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
• Effective Date: 10-Jan-2002

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:C919–02
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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope TT-C-598C (COM-NBS) Interim Federal Specification for
Caulking Compound, Oil and Resin Base Type (for
1.1 This practice is a guide for the use of sealants to reduce
4
Building Construction)
the sound transmission characteristics of interior walls, ceil-
2.3 DHUD Standards:
ings, and floors by proper application of sealants to joints,
HUDMinimumPropertyStandardsforOneandTwoFamily
voids, and penetrations normally found in building construc-
5
Housing, Section 4900.1
tion.
HUD Minimum Property Standard for Multi Family Hous-
1.2 This standard does not purport to address all of the
5
ing, Section 4910.1
safety concerns, if any, associated with its use. It is the
HUD Minimum Property Standard for Care Type Housing,
responsibility of the user of this standard to establish appro-
5
Section 4920.1
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
3. Significance and Use
1.3 Thecommitteewithjurisdictionoverthisstandardisnot
3.1 Construction utilizing lightweight walls and floors can
aware of any comparable standards published by other orga-
have undesirable sound transmission characteristics if care is
nizations.
not taken to seal joints and voids that are common to this type
2. Referenced Documents of construction. By sealing these penetrations the transmission
of sound can be diminished.
2.1 ASTM Standards:
C 570 SpecificationforOil-andResin-BaseCaulkingCom-
4. Sound Transmission Class
2
pound for Building Construction
3 4.1 The construction industry has adopted Sound Transmis-
C 634 Terminology Relating to Environmental Acoustics
2
sion Class (STC) units (defined in Definitions C 634) to rate
C 834 Specification for Latex Sealants
2 the sound barrier properties of walls, ceilings, and floors. The
C 920 Specification for Elastomeric Joint Sealants
STC is determined in accordance with Classification E 413.
E90 Test Method for Laboratory Measurement ofAirborne
3 The test data are obtained in accordance with Test Methods
Sound Transmission Loss of Building Partitions
E90orE336.
E 336 Test Method for Measurement of Airborne Sound
3
Insulation in Buildings
NOTE 1—For example, The Department of Housing and Urban Devel-
3
E 413 Classification for Rating Sound Insulation opment (DHUD) has issued the following three standards dealing with the
STC limitation in various housing units:
E 497 Practice for Installing Sound-Isolating Lightweight
3
HUD Minimum Property Standard for One and Two Family Housing,
Partitions
Section 4900.1;
2.2 Federal Specifications:
HUD Minimum Property Standard for Multi Family Housing, Section
TT-S-1657 (COM-NBS) Interim Federal Specification for
4910.1; and
Sealing Compound—Single Component, Butyl Rubber
HUD Minimum Property Standard for Care Type Housing, Section
Based, Solvent Release Type (for Buildings and Other
4920.1
4
Type of Construction)
5. Need to Seal Openings
5.1 The effect of unsealed openings on the STC of partition
1
This practice is under the jurisdiction of ASTM Committee C24 on Building
walls is shown in Fig. 1. This chart also shows the improve-
Seals and Sealants and is the direct responsibility of Subcommittee C24.10 on
ment of the STC when openings are sealed. It should be
Specifications, Guides and Practices.
recognized for slit openings that the STC values may be
Current edition approved Jan. 10, 2002. Published March 2002. Originally
different from the STC value for a hole opening.
published as C 919 – 79. Last previous edition C 919 – 98.
2
Annual Book of ASTM Standards, Vol 04.07.
3
Annual Book of ASTM Standards, Vol 04.06.
4 5
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C919–02
FIG. 1 Effect of Unsealed Hole Openings on STC-Rated Test Wall,
3.8by2.4m(12ft6in.by8ft)
5.2 Fig. 2 shows examples of how sound travels through
openings in walls and how sealing may serve to minimize
soundtransmission.FurtherexamplesmaybefoundinPractice
E 497.
6. Positioning of Sealants
FIG. 2 Examples of Achieving an Effective Sound Barrier and
6.1 Fig. 3 illustrates placement of beads of sealant
...