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ASTM C1193-09

(Guide)

Standard Guide for Use of Joint Sealants

Standard Guide for Use of Joint Sealants

SIGNIFICANCE AND USE
This guide provides information and guidelines for consideration by the designer or applicator of a joint seal. It explains the properties and functions of various materials, such as sealant, sealant backing, and primer, among others; and, procedures such as, substrate cleaning and priming, and installation of the components of a sealed joint. It presents guidelines for the use and application of the various materials, design of a sealant joint for a specific application, and environmental conditions and effects that are known to detrimentally affect a sealant joint. The information and guidelines are also useful for those that supply accessories to the sealant industry and for those that install sealants and accessory materials associated with sealant use.
In addition to the design and installation data in this guide, consult the sealant manufacturer about applications for its products and their proper use and installation. Considering the range of properties of commercially available sealants, the variety of joint designs possible, and the many conditions of use, the information contained herein is general in nature.
To assist the user of the guide in locating specific information, a detailed listing of guide numbered sections and their descriptors are included in Appendix X2.
SCOPE
1.1 This guide describes the use of a cold liquid-applied sealant for joint sealing applications. Including joints on buildings and related adjacent areas, such as plazas, decks, and pavements for vehicular or pedestrian use, and types of construction other than highways and airfield pavements and bridges. Information in this guide is primarily applicable to a single and multi-component, cold liquid-applied joint sealant and secondarily to a precured sealant when used with a properly prepared joint opening and substrate surfaces.
1.2 An elastomeric or non-elastomeric sealant described by this guide should meet the requirements of Specification C 834, C 920, or C 1311.
1.3 This guide does not provide information or guidelines for the use of a sealant in a structural sealant glazing application. Guide C 1401 should be consulted for this information. Additionally, it also does not provide information or guidelines for the use of a sealant in an insulating glass unit edge seal used in a structural sealant glazing application. Guide C 1249 should be consulted for this information.
1.4 Practice C 919 should be consulted for information and guidelines for the use of a sealant in an application where an acoustic joint seal is required.
1.5 This guide also does not provide information relative to the numerous types of sealant that are available nor specific generic sealant properties, such as hardness, tack-free time, or curing process, among others. Guide C 1299 should be consulted for information on generally accepted comparative values for the characteristics and properties of the more common generic types of liquid-applied sealant.
1.6 The values stated in SI units are to be regarded as the standard. The values given in parenthesis are provided for information only.
1.7 The Committee with jurisdiction for this standard is not aware of any comparable standards published by other organizations.
1.8 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.
1.9 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.

General Information

Status
Historical
Publication Date
31-Dec-2008
ICS
91.100.50 - Binders. Sealing materials
Technical Committee
C24 - Building Seals and Sealants
Drafting Committee
C24.10 - Specifications, Guides and Practices
Current Stage
Ref Project

Relations

Replaces
ASTM C1193-05a - Standard Guide for Use of Joint Sealants
Effective Date
01-Jan-2009
Replaced By
ASTM C1193-11 - Standard Guide for Use of Joint Sealants
Effective Date
15-Jun-2011
Referred By
ASTM C1521-19(2020) - Standard Practice for Evaluating Adhesion of Installed Weatherproofing Sealant Joints
Effective Date
01-Jan-2009
Referred By
ASTM C920-18 - Standard Specification for Elastomeric Joint Sealants
Effective Date
01-Jan-2009
Referred By
ASTM C898/C898M-09(2017) - Standard Guide for Use of High Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane with Separate Wearing Course
Effective Date
01-Jan-2009
Referred By
ASTM C1481-12(2017) - Standard Guide for Use of Joint Sealants with Exterior Insulation and Finish Systems (EIFS)
Effective Date
01-Jan-2009
Referred By
ASTM C1472-16(2022) - Standard Guide for Calculating Movement and Other Effects When Establishing Sealant Joint Width
Effective Date
01-Jan-2009
Referred By
ASTM E2435-05(2020) - Standard Guide for Application of Engineering Controls to Facilitate Use or Redevelopment of Chemical-Affected Properties
Effective Date
01-Jan-2009
Referred By
ASTM E3223/E3223M-20 - Standard Guide for Specifying and Testing Field-Constructed Exterior Building Wall System Mockups in New Construction
Effective Date
01-Jan-2009
Referred By
ASTM E2266-22 - Standard Guide for Design and Construction of Low-Rise Frame Building Wall Systems to Resist Water Intrusion
Effective Date
01-Jan-2009
Referred By
ASTM C981-20 - Standard Guide for Design of Built-Up Bituminous Membrane Waterproofing Systems for Building Decks
Effective Date
01-Jan-2009
Referred By
ASTM C1311-22 - Standard Specification for Solvent Release Sealants
Effective Date
01-Jan-2009
Referred By
ASTM C1127/C1127M-15(2023) - Standard Guide for Use of High Solids Content, Cold Liquid-Applied Elastomeric Waterproofing Membrane with an Integral Wearing Surface
Effective Date
01-Jan-2009
Referred By
ASTM C1253-14(2019) - Standard Test Method for Determining the Outgassing Potential of Sealant Backing
Effective Date
01-Jan-2009
Referred By
ASTM C834-17(2023) - Standard Specification for Latex Sealants
Effective Date
01-Jan-2009

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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: C1193 – 09
Standard Guide for
1
Use of Joint Sealants
This standard is issued under the fixed designation C1193; 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 responsibility of the user of this standard to establish appro-
priate safety and health practices, and determine the applica-
1.1 This guide describes the use of a cold liquid-applied
bility of regulatory limitations prior to use.
sealant for joint sealing applications. Including joints on
1.9 Thecommitteewithjurisdictionoverthisstandardisnot
buildings and related adjacent areas, such as plazas, decks, and
aware of any comparable standards published by other orga-
pavements for vehicular or pedestrian use, and types of
nizations.
construction other than highways and airfield pavements and
bridges. Information in this guide is primarily applicable to a
2. Referenced Documents
single and multi-component, cold liquid-applied joint sealant
2
2.1 ASTM Standards:
and secondarily to a precured sealant when used with a
C510 TestMethodforStainingandColorChangeofSingle-
properly prepared joint opening and substrate surfaces.
or Multicomponent Joint Sealants
1.2 An elastomeric or non-elastomeric sealant described by
C717 Terminology of Building Seals and Sealants
this guide should meet the requirements of Specification C834,
C719 Test Method for Adhesion and Cohesion of Elasto-
C920,or C1311.
meric Joint Sealants Under Cyclic Movement (Hockman
1.3 This guide does not provide information or guidelines
Cycle)
for the use of a sealant in a structural sealant glazing applica-
C792 Test Method for Effects of Heat Aging on Weight
tion. Guide C1401 should be consulted for this information.
Loss, Cracking, and Chalking of Elastomeric Sealants
Additionally, it also does not provide information or guidelines
C794 Test Method for Adhesion-in-Peel of Elastomeric
fortheuseofasealantinaninsulatingglassunitedgesealused
Joint Sealants
in a structural sealant glazing application. Guide C1249 should
C834 Specification for Latex Sealants
be consulted for this information.
C919 Practice for Use of Sealants in Acoustical Applica-
1.4 Practice C919 should be consulted for information and
tions
guidelines for the use of a sealant in an application where an
C920 Specification for Elastomeric Joint Sealants
acoustic joint seal is required.
C1083 Test Method for Water Absorption of Cellular Elas-
1.5 This guide also does not provide information relative to
tomeric Gaskets and Sealing Materials
the numerous types of sealant that are available nor specific
C1087 Test Method for Determining Compatibility of
generic sealant properties, such as hardness, tack-free time, or
Liquid-Applied Sealants with Accessories Used in Struc-
curing process, among others. Guide C1299 should be con-
tural Glazing Systems
sulted for information on generally accepted comparative
C1135 Test Method for Determining Tensile Adhesion
values for the characteristics and properties of the more
Properties of Structural Sealants
common generic types of liquid-applied sealant.
C1247 Test Method for Durability of Sealants Exposed to
1.6 The values stated in SI units are to be regarded as the
Continuous Immersion in Liquids
standard. The values given in parenthesis are provided for
C1248 Test Method for Staining of Porous Substrate by
information only.
Joint Sealants
1.7 The Committee with jurisdiction for this standard is not
C1249 Guide for Secondary Seal for Sealed Insulating
aware of any comparable standards published by other orga-
Glass Units for Structural Sealant Glazing Applications
nizations.
C1253 Test Method for Determining the Outgassing Poten-
1.8 This standard does not purport to address all of the
tial of Sealant Backing
safety concerns, if any, associated with its use. It is the
C1299 Guide for Use in Selection of Liquid-Applied Seal-
ants
1
This standard 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.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Jan. 1, 2009. Published February 2009. Originally
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1991. Last previous edition approved in 2005 as C1193–05a. DOI:
Standards volume information, refer to the standard’s Document Summary page on
10.1520/C1193-09.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- P
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:C1193–05a Designation: C 1193 – 09
Standard Guide for
1
Use of Joint Sealants
This standard is issued under the fixed designation C 1193; 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 guide describes the use of a cold liquid-applied sealant for joint sealing applications. Including joints on buildings and
related adjacent areas, such as plazas, decks, and pavements for vehicular or pedestrian use, and types of construction other than
highways and airfield pavements and bridges. Information in this guide is primarily applicable to a single and multi-component,
cold liquid-applied joint sealant and secondarily to a precured sealant when used with a properly prepared joint opening and
substrate surfaces.
1.2 An elastomeric or non-elastomeric sealant described by this guide should meet the requirements of Specification C 834,
C 920, or C 1311.
1.3 This guide does not provide information or guidelines for the use of a sealant in a structural sealant glazing application.
Guide C 1401 should be consulted for this information.Additionally, it also does not provide information or guidelines for the use
of a sealant in an insulating glass unit edge seal used in a structural sealant glazing application. Guide C 1249 should be consulted
for this information.
1.4 Practice C 919 should be consulted for information and guidelines for the use of a sealant in an application where an
acoustic joint seal is required.
1.5 This guide also does not provide information relative to the numerous types of sealant that are available nor specific generic
sealant properties, such as hardness, tack-free time, or curing process, among others. Guide C 1299 should be consulted for
information on generally accepted comparative values for the characteristics and properties of the more common generic types of
liquid-applied sealant.
1.6 The values stated in SI units are to be regarded as the standard.The values given in parenthesis are provided for information
only.
1.7 The Committee with jurisdiction for this standard is not aware of any comparable standards published by other
organizations.
1.8 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.
1.9 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 510 Test Method for Staining and Color Change of Single- or Multicomponent Joint Sealants
C 717 Terminology of Building Seals and Sealants
C 719 Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)
C 792 Test Method for Effects of Heat Aging on Weight Loss, Cracking, and Chalking of Elastomeric Sealants
C 794 Test Method for Adhesion-in-Peel of Elastomeric Joint Sealants
C 834 Specification for Latex Sealants
C 919 Practice for Use of Sealants in Acoustical Applications
C 920 Specification for Elastomeric Joint Sealants
C 1083 Test Method for Water Absorption of Cellular Elastomeric Gaskets and Sealing Materials
C 1087 Test Method for Determining Compatibility of Liquid-Applied Sealants with Accessories Used in Structural Glazing
Systems
1
ThisstandardisunderthejurisdictionofASTMCommitteeC24onBuildingSealsandSealantsandisthedirectresponsibilityofSubcommitteeC24.10onSpecifications,
Guides and Practices.
Current edition approved MayJan. 1, 2005.2009. Published June 2005.February 2009. Originally approved in 1991. Last previous edition approved in 2005 as C 1193–05a.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C1193–09
C 1135 Test Method for Determining Tensile Adhesion Properties of Structural sealantsSealants
C 1247 Test Method for Durability of Sealants Exposed to Continu
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:C1193–05a Designation: C 1193 – 09
Standard Guide for
1
Use of Joint Sealants
This standard is issued under the fixed designation C 1193; 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 guide describes the use of a cold liquid-applied sealant for joint sealing applications. Including joints on buildings and
related adjacent areas, such as plazas, decks, and pavements for vehicular or pedestrian use, and types of construction other than
highways and airfield pavements and bridges. Information in this guide is primarily applicable to a single and multi-component,
cold liquid-applied joint sealant and secondarily to a precured sealant when used with a properly prepared joint opening and
substrate surfaces.
1.2 An elastomeric or non-elastomeric sealant described by this guide should meet the requirements of Specification C 834,
C 920, or C 1311.
1.3 This guide does not provide information or guidelines for the use of a sealant in a structural sealant glazing application.
Guide C 1401 should be consulted for this information.Additionally, it also does not provide information or guidelines for the use
of a sealant in an insulating glass unit edge seal used in a structural sealant glazing application. Guide C 1249 should be consulted
for this information.
1.4 Practice C 919 should be consulted for information and guidelines for the use of a sealant in an application where an
acoustic joint seal is required.
1.5 This guide also does not provide information relative to the numerous types of sealant that are available nor specific generic
sealant properties, such as hardness, tack-free time, or curing process, among others. Guide C 1299 should be consulted for
information on generally accepted comparative values for the characteristics and properties of the more common generic types of
liquid-applied sealant.
1.6 The values stated in SI units are to be regarded as the standard.The values given in parenthesis are provided for information
only.
1.7 The Committee with jurisdiction for this standard is not aware of any comparable standards published by other
organizations.
1.8 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.
1.9 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 510 Test Method for Staining and Color Change of Single- or Multicomponent Joint Sealants
C 717 Terminology of Building Seals and Sealants
C 719 Test Method for Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)
C 792 Test Method for Effects of Heat Aging on Weight Loss, Cracking, and Chalking of Elastomeric Sealants
C 794 Test Method for Adhesion-in-Peel of Elastomeric Joint Sealants
C 834 Specification for Latex Sealants
C 919 Practice for Use of Sealants in Acoustical Applications
C 920 Specification for Elastomeric Joint Sealants
C 1083 Test Method for Water Absorption of Cellular Elastomeric Gaskets and Sealing Materials
C 1087 Test Method for Determining Compatibility of Liquid-Applied Sealants with Accessories Used in Structural Glazing
Systems
1
ThisstandardisunderthejurisdictionofASTMCommitteeC24onBuildingSealsandSealantsandisthedirectresponsibilityofSubcommitteeC24.10onSpecifications,
Guides and Practices.
Current edition approved MayJan. 1, 2005.2009. Published June 2005.February 2009. Originally approved in 1991. Last previous edition approved in 2005 as C 1193–05a.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM 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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
C1193–09
C 1135 Test Method for Determining Tensile Adhesion Properties of Structural sealantsSealants
C 1247 Test Method for Durability of Sealants Exposed to Continu
...

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4.1 This guide provides information and guidelines for consideration by the designer or applicator of a joint seal. It explains the properties and functions of various materials, such as sealant, sealant backing, and primer, among others; and, procedures such as, substrate cleaning and priming, and installation of the components of a sealed joint. It presents guidelines for the use and application of the various materials, design of a sealant joint for a specific application, and environmental conditions and effects that are known to detrimentally affect a sealant joint. The information and guidelines are also useful for those that supply accessories to the sealant industry and for those that install sealants and accessory materials associated with sealant use.  
4.2 In addition to the design and installation data in this guide, consult the sealant manufacturer about applications for its products and their proper use and installation. Considering the range of properties of commercially available sealants, the variety of joint designs possible, and the many conditions of use, the information contained herein is general in nature.  
4.3 It should be realized that a sealant and sealant joint are expected to have a design life during which they remain functional. However, a sealant and sealant joint will also have a service life. The intent is for service life to meet or exceed design life. There are many factors that can affect service life including type of sealant polymer, sealant formulation, compatibility with adjacent materials, installation techniques or deficiencies, sealant joint design (or lack thereof), proper maintenance (or lack thereof), and environmental exposure, among others. The designer of a joint seal should take the above into consideration when designing and specifying sealants for certain applications.  
4.4 The design life of a sealant or sealant joint should be considered in conjunction with the design life of the structure for which it is us...
SCOPE
1.1 This guide describes the use of a cold liquid-applied sealant for joint sealing applications. Including joints on buildings and related adjacent areas, such as plazas, decks, and pavements for vehicular or pedestrian use, and types of construction other than highways and airfield pavements and bridges. Information in this guide is primarily applicable to a single and multi-component, cold liquid-applied joint sealant and secondarily to a precured sealant when used with a properly prepared joint opening and substrate surfaces.  
1.2 An elastomeric or non-elastomeric sealant described by this guide should meet the requirements of Specification C834, C920, or C1311.  
1.3 This guide does not provide information or guidelines for the use of a sealant in a structural sealant glazing application. Guide C1401 should be consulted for this information. Additionally, it also does not provide information or guidelines for the use of a sealant in an insulating glass unit edge seal used in a structural sealant glazing application. Guide C1249 should be consulted for this information.  
1.4 Practice C919 should be consulted for information and guidelines for the use of a sealant in an application where an acoustic joint seal is required.  
1.5 This guide also does not provide information relative to the numerous types of sealant that are available nor specific generic sealant properties, such as hardness, tack-free time, or curing process, among others.  
1.6 The values stated in SI units are to be regarded as the standard. The values given in parenthesis are provided for information only.  
1.7 The Committee with jurisdiction for this standard is not aware of any comparable standards published by other organizations.  
1.8 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 e...

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ASTM
ASTM C782-13(2023)(Test Method)
Standard Test Method for Softness of Preformed Tape Sealants

SIGNIFICANCE AND USE
5.1 Preformed tape sealants are tacky, deformable solids that are used under compression between two substrates in a variety of sealing applications. This procedure measures the softness of a preformed tape sealant and gives an indication of the preformed tape sealant's ease of compression during installation. The resistance to penetration may also give an indication of the toughness of the preformed tape sealant.
SCOPE
1.1 This test method describes a laboratory procedure for determining the softness of preformed tape sealants.  
Note 1: Cone penetration methods applicable to greases and to petrolatum are described in Test Methods D217 and D937. Test Method D2451 also uses a penetration technique for determining the degree of set in sash glazing compounds.  
1.2 The values stated in SI units are to be regarded as standard. Temperature values are also provided (in parentheses) in degrees Fahrenheit.  
1.3 The subcommittee with jurisdiction is not aware of any similar ISO standard.  
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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ASTM
ASTM C1330-23(Specification)
Standard Specification for Cylindrical Sealant Backing for Use with Cold Liquid-Applied Sealants

ABSTRACT
This standard specification covers the basic requirements for cylindrical sealant backing for use with cold liquid-applied sealants. Cylindrical sealant backings are classified into three types: type C, type O, and type B, composed predominantly of closed cell material, open cell material, and bi-cellular material, respectively. Test methods for cylindrical sealant backing include water absorption, density, outgassing, compression deflection and recovery, and tensile strength. The sealant shall be clean, free of scale, foreign matter, oil, or water.
SIGNIFICANCE AND USE
5.1 This specification is designed to give some indication as to the differences in performance for various cylindrical sealant backings.  
5.2 Although this specification qualifies a cylindrical sealant backing for use, it does not address the compatibility of the backing with the sealants with which it will make contact. Sealant compatibility should be confirmed by the sealant manufacturer. Compatibility characteristics of sealants in contact with cylindrical sealant backings can be determined by Test Method C1087.
SCOPE
1.1 This specification covers the basic requirements for cylindrical sealant backing to be used with cold liquid applied sealants for use in building seals.  
1.2 Cylindrical sealant backing serves one or more of the following functions:  
1.2.1 Limits the amount and depth of sealant applied into a joint,  
1.2.2 Acts as a bond breaker to allow joint movement without undue stress to the sealant,  
1.2.3 Provides a form to assist the sealant in developing the proper shape factor, and  
1.2.4 Acts as a barrier to the flow of sealant through the joint.  
1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other ASTM committees or other organizations.  
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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ASTM
ASTM C792-23(Test Method)
Standard Test Method for Effects of Heat Aging on Weight Loss, Cracking, and Chalking of Elastomeric Sealants

SIGNIFICANCE AND USE
5.1 Weight loss through volatilization of components of a sealant in a building joint may affect sealant appearance because of shrinkage, and sealant performance because of the loss of functional sealant components. Exposure to high-temperature environments will accelerate the loss of volatiles.  
5.2 This test method measures weight loss. It can be used in combination with a knowledge of sealant density to estimate shrinkage. In addition, when compared to sealant theoretical weight solids, it provides an estimate of the extent to which functional sealant components can be volatilized when exposed to high service temperatures. Substantial losses of this type may help predict early failures in durability. Also, development of cracks or chalking, or both, lessens sealant service life. However, a sealant that develops no cracks or chalking, or low weight loss in this test method, does not necessarily assure good durability.
SCOPE
1.1 This test method covers a laboratory procedure for determining the effects of heat aging on weight loss, cracking, and chalking of cured-in-place elastomeric joint sealants (single- and multi-component) for use 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.3 There is no known ISO equivalent to this test method.  
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.

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ASTM
ASTM C793-23(Test Method)
Standard Test Method for Effects of Laboratory Accelerated Weathering on Elastomeric Joint Sealants

SIGNIFICANCE AND USE
5.1 It is known that solar radiation contributes to the degradation of sealants in exterior building joints. The use of a laboratory accelerated weathering machine with actinic radiation, moisture and heat appears to be a feasible means to give indications of early degradation by the appearance of sealant cracking. However, simulated weather factors in combination with extension may produce more severe degradation than weather factors only. Therefore, the effect of the weathering test is made more sensitive by the addition of the bending of the specimen at cold temperature.
SCOPE
1.1 This test method covers a laboratory procedure for determining the effects of accelerated weathering on cured-in-place elastomeric joint sealants (single- and multicomponent) for use in building construction.  
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.  
1.3 The committee with jurisdiction over this standard is not aware of any comparable standards published by other ASTM committees or other organizations.  
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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ASTM
ASTM C765-23(Test Method)
Standard Test Method for Low-Temperature Flexibility of Preformed Tape Sealants

SIGNIFICANCE AND USE
5.1 Preformed tape sealants are tacky, deformable solids that are used under compression between two substrates in a variety of sealing applications. This procedure is not intended to simulate an actual use condition, but it will give some indication of the flexibility and adhesion of a tape at low temperature. It can serve to differentiate between flexible tapes that can take some movement and those that tend to harden or embrittle on aging and crack or lose adhesion when flexed at low temperature. It will also aid in identifying sealants that have poor flexibility because they are overextended and contain a low level of binder as well as those sealants having binders that will embrittle at low temperature.
SCOPE
1.1 This test method covers a laboratory procedure for testing the low-temperature flexibility of preformed tape sealants.  
1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.  
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.

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