ASTM C1520-02(2015)e1
(Guide)Standard Guide for Paintability of Latex Sealants
Standard Guide for Paintability of Latex Sealants
SIGNIFICANCE AND USE
5.1 The intent of this guide is to provide the reader with information concerning possible reasons for paint failures where the paint is used over a latex sealant.
SCOPE
1.1 This guide describes the practical considerations that may be used to determine the compatibility of a paint or coating to be applied over a latex sealant or caulk. It evaluates the appearance and not the performance characteristics of the coated or painted joint.
1.2 The committee with jurisdiction over this standard is not aware of any comparable standards published by other organizations.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 and health practices and determine the applicability of regulatory requirements prior to use.
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´1
Designation: C1520 − 02 (Reapproved 2015)
Standard Guide for
Paintability of Latex Sealants
This standard is issued under the fixed designation C1520; 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.
ε NOTE—Duplicate wording was deleted in 18.1 in July 2015.
1. Scope joint, latex sealant. Refer to Terminology E284 for definitions
of the following term(s) used in this guide: gloss.
1.1 This guide describes the practical considerations that
3.2 color change—a change in either the observed (see
may be used to determine the compatibility of a paint or
Practice D1729) or measured color (see Test Method D2244)
coating to be applied over a latex sealant or caulk. It evaluates
of a substance.
the appearance and not the performance characteristics of the
coated or painted joint.
3.3 cracking—a failure resulting in a discontinuous film (of
paint) or bead (of sealant).
1.2 Thecommitteewithjurisdictionoverthisstandardisnot
aware of any comparable standards published by other orga-
4. Summary of Practice
nizations.
4.1 This guide reviews many of the issues concerning the
1.3 The values stated in SI units are to be regarded as
compatibility of latex sealants with paint. While the focus of
standard. No other units of measurement are included in this
this guide is on latex sealants, the paint or coating may be of
standard.
any composition.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 5. Significance and Use
responsibility of the user of this standard to establish appro-
5.1 The intent of this guide is to provide the reader with
priate safety and health practices and determine the applica-
information concerning possible reasons for paint failures
bility of regulatory requirements prior to use.
where the paint is used over a latex sealant.
2. Referenced Documents
CONSIDERATIONS
2.1 ASTM Standards:
6. Temperature
C717 Terminology of Building Seals and Sealants
6.1 Since standard testing is usually performed at “room
D1729 Practice for Visual Appraisal of Colors and Color
temperature,” about 22°C, this would be considered the ideal
Differences of Diffusely-Illuminated Opaque Materials
temperature for application and curing. As the temperature
D2244 Practice for Calculation of Color Tolerances and
deviates from this ideal, the “science” of drying changes in as
Color Differences from Instrumentally Measured Color
much as lower temperature results in slower drying and faster
Coordinates
drying occurs at elevated temperatures.
E284 Terminology of Appearance
7. Percent Relative Humidity
3. Terminology
7.1 In waterborne sealants, the humidity directly affects the
3.1 Definitions—Refer to Terminology C717 for definitions
ability of the system to lose water. Standard testing is typically
of the following term(s) used in this guide: compatibility, cure,
done at 50 % RH, which allows for an acceptable evaporation
rate. Temperature and humidity variations in climatic regions
ThisguideisunderthejurisdictionofASTMCommitteeC24onBuildingSeals and fluctuations through the application and cure will have
and Sealants and is the direct responsibility of Subcommittee C24.10 on
significant impacts.
Specifications, Guides and Practices.
CurrenteditionapprovedJune1,2015.PublishedJuly2015.Originallyapproved
8. Type of Paint
in 2002. Last previous edition approved in 2010 as C1520-02(2010). DOI:
10.1520/C1520-02R15E01.
8.1 The type of paint applied to the sealant has an effect on
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
how well it may handle dimensional changes, adhere to the
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
sealant or dry during the curing of the sealant. Paints made
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. from more flexible resins (low Tg) with low pigment volume
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
C1520 − 02 (2015)
content (PVC) (
...
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.
´1
Designation: C1520 − 02 (Reapproved 2010) C1520 − 02 (Reapproved 2015)
Standard Guide for
Paintability of Latex Sealants
This standard is issued under the fixed designation C1520; 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.
ε NOTE—Duplicate wording was deleted in 18.1 in July 2015.
1. Scope
1.1 This guide describes the practical considerations that may be used to determine the compatibility of a paint or coating to
be applied over a latex sealant or caulk. It evaluates the appearance and not the performance characteristics of the coated or painted
joint.
1.2 The committee with jurisdiction over this standard is not aware of any comparable standards published by other
organizations.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this 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 and health practices and determine the applicability of regulatory
requirements prior to use.
2. Referenced Documents
2.1 ASTM Standards:
C717 Terminology of Building Seals and Sealants
D1729 Practice for Visual Appraisal of Colors and Color Differences of Diffusely-Illuminated Opaque Materials
D2244 Practice for Calculation of Color Tolerances and Color Differences from Instrumentally Measured Color Coordinates
E284 Terminology of Appearance
3. Terminology
3.1 Definitions—Refer to Terminology C717 for definitions of the following term(s) used in this guide: compatibility, cure, joint,
latex sealant. Refer to Terminology E284 for definitions of the following term(s) used in this guide: gloss.
3.2 color change—a change in either the observed (see Practice D1729) or measured color (see Test Method D2244) of a
substance.
3.3 cracking—a failure resulting in a discontinuous film (of paint) or bead (of sealant).
4. Summary of Practice
4.1 This guide reviews many of the issues concerning the compatibility of latex sealants with paint. While the focus of this guide
is on latex sealants, the paint or coating may be of any composition.
5. Significance and Use
5.1 The intent of this guide is to provide the reader with information concerning possible reasons for paint failures where the
paint is used over a latex sealant.
This guide 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 Oct. 1, 2010June 1, 2015. Published November 2010July 2015. Originally approved in 2002. Last previous edition approved in 20022010 as
C1520C1520-02(2010).-02. DOI: 10.1520/C1520-02R10.10.1520/C1520-02R15E01.
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.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
´1
C1520 − 02 (2015)
CONSIDERATIONS
6. Temperature
6.1 Since standard testing is usually performed at “room temperature,” about 22°C, this would be considered the ideal
temperature for application and curing. As the temperature deviates from this ideal, the “science” of drying changes in as much
as lower temperature results in slower drying and faster drying occurs at elevated temperatures.
7. Percent Relative Humidity
7.1 In waterborne sealants, the humidity directly affects the ability of the system to lose water. Standard testing is typically done
at 50 % RH, which allows for an acceptable evaporation rate. Temperature and humidity variations in climatic regions and
fluctuations through the application and cure will have significant impacts.
8. Type of Paint
8.1 The type of paint applied to the sealant has an effect on how well it may handle dimensional changes, adhere to the sea
...
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