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ASTM

ASTM D7072-04(2013)

(Practice)

Standard Practice for Evaluating Accelerated Efflorescence of Latex Coatings

Standard Practice for Evaluating Accelerated Efflorescence of Latex Coatings

SIGNIFICANCE AND USE
5.1 Latex paints are sometimes applied over substrates that contain a high level of water soluble salts that result in efflorescence. This practice evaluates a coating’s vulnerability to efflorescence.
SCOPE
1.1 This practice covers the evaluation of the degree to which a latex paint resists the formation of efflorescence and alkali burnout on the exposed paint surface.  
1.2 This practice is designed primarily to relate efflorescence originating in the substrate to the deposit appearing on the surface of latex paints. This practice relates chiefly to the painting of masonry-type substrates such as concrete block, brick, mortar, stucco, poured concrete and similar materials.  
1.3 The values in SI units are to be regarded as the standard. The values in parenthesis are for information only.  
1.4 This method does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

Status
Historical
Publication Date
30-Jun-2013
ICS
87.040 - Paints and varnishes
Technical Committee
D01 - Paint and Related Coatings, Materials, and Applications
Drafting Committee
D01.42 - Architectural Coatings
Current Stage
Ref Project

Relations

Replaces
ASTM D7072-04(2009) - Standard Practice for Evaluating Accelerated Efflorescence of Latex Coatings
Effective Date
01-Jul-2013
Replaced By
ASTM D7072-04(2019) - Standard Practice for Evaluating Accelerated Efflorescence of Latex Coatings
Effective Date
01-Apr-2019
Referred By
ASTM D5324-16(2022) - Standard Guide for Testing Water-Borne Architectural Coatings
Effective Date
01-Jul-2013

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ASTM D7072-04(2013) - Standard Practice for Evaluating Accelerated Efflorescence of Latex CoatingsASTM D7072-04(2013) - Standard Practice for Evaluating Accelerated Efflorescence of Latex Coatings
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ASTM D7072-04(2013) - Standard Practice for Evaluating Accelerated Efflorescence of Latex Coatings
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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: D7072 − 04 (Reapproved 2013)
Standard Practice for
Evaluating Accelerated Efflorescence of Latex Coatings
This standard is issued under the fixed designation D7072; 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 from the paint film appearance. The discoloration occurs when
soluble salts in the substrate or paint migrate to the surface by
1.1 This practice covers the evaluation of the degree to
the leaching and evaporating action of the water carrier. The
which a latex paint resists the formation of efflorescence and
efflorescence originating within the substrate is that with which
alkali burnout on the exposed paint surface.
this method is concerned.
1.2 This practice is designed primarily to relate efflores-
3.1.2 alkali burnout, n—the premature fading or decompo-
cence originating in the substrate to the deposit appearing on
sitionofpaintsthataresensitivetothehighpHofthesubstrate.
the surface of latex paints. This practice relates chiefly to the
The high alkaline content of the substrate can alter the color.
painting of masonry-type substrates such as concrete block,
brick, mortar, stucco, poured concrete and similar materials.
4. Summary of Practice
1.3 The values in SI units are to be regarded as the standard.
4.1 Panels known to have a level of salts capable of being
The values in parenthesis are for information only.
easily and quickly transported to the paint surface are used.
1.4 This method does not purport to address all of the safety
Since tinted paints show the efflorescence most clearly, all
concerns, if any, associated with its use. It is the responsibility
white paints should be tinted before application. The panel is
of whoever uses this standard to consult and establish appro-
placed face down over the surface of the test chamber which
priate safety and health practices and determine the applica-
contains heated water, so that moisture condenses and remains
bility of regulatory limitations prior to use.
on the painted surface of the panel for a period of 48 h. After
drying at ambient conditions, the panels are rated for the
2. Referenced Documents
degree of efflorescence which has formed.
2.1 ASTM Standards:
D1475 Test Method For Density of Liquid Coatings, Inks,
5. Significance and Use
and Related Products
5.1 Latex paints are sometimes applied over substrates that
D1734 Practice for Making Cementitious Panels for Testing
contain a high level of water soluble salts that result in
Coatings
efflorescence. This practice evaluates a coating’s vulnerability
D4585 Practice for Testing Water Resistance of Coatings
to efflorescence.
Using Controlled Condensation
D5068 Practice for Preparation of Paint Brushes for Evalu-
6. Apparatus
ation
6.1 Condensation Test Chamber—As described in Practice
3. Terminology (Specific to this Practice)
D4585.
3.1 Definitions of Terms Specific to This Standard:
6.2 Test Substrate—Fiber-cement siding or a substrate
3.1.1 efflorescence, n—the deposition of soluble salts on the
agreed upon by the purchaser and seller. The substrate size
exposed paint surface. Efflorescence is characterized by a light
would depend on the number of test paints.
colored, nonuniform, powdery incrustation which detracts
6.3 White Portland Cement and Graded Standard Sand (as
described in Practice D1734).
This practice is under the jurisdiction of Committee D01 on Paint and Related
6.4 Trowel (as described in Practice D1734).
Coatings, Materials, and Applications and is the direct responsibility of Subcom-
mittee D01.42 on Architectural Coatings. 6.5 Paint Brush—Nylon/polyester brush of good quality.
Current edition approved on July 1, 2013. Published July 2013. Originally
6.6 Electronic Scale capable of 0.1 g.
approved in 2004. Last previous edition approved in 2009 as D7072 – 04 (2009).
DOI: 10.1520/D7072-04R13.
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 Hardieplank, a registered trademark of James Hardie, was found to be
the ASTM website. acceptable but others may be used.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
...

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1.1 This test method is a standardized brushout procedure for comparing the brush drag of architectural type solvent-borne paints.  
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