ASTM D7089-06(2021)

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.
Designation: D7089 − 06 (Reapproved 2021)
Standard Practice for
Determination of the Effectiveness of Anti-Graffiti Coating
for Use on Concrete, Masonry and Natural Stone Surfaces
by Pressure Washing
This standard is issued under the fixed designation D7089; 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 tioning and Testing Paint, Varnish, Lacquer, and Related
Materials
1.1 This practice covers a basic method for evaluating the
D6578 Practice for Determination of Graffiti Resistance
performance of anti-graffiti products on mineral building sub-
strates by a series of increasingly abrasive cleaning methods.
3. Terminology
The anti-graffiti materials are applied to a series of concrete,
3.1 Definitions:
masonry and natural stone specimens for evaluation. Graffiti
3.1.1 graffıti resistant, n—the property of coatings to be
resistance is based on how a defined set of markings are
resistance to the application of graffiti or exhibit easy removal
removed by a designated set of cleaning techniques.
of graffiti without surface damage, or both.
1.2 This practice also defines a procedure to evaluate graffiti
3.1.2 non-sacrificial anti-graffıti coatings, n—the property
removal after re-marking with subsequent re-cleaning. It does
of a coating in which they remain intact or undamaged after the
not address the re-treatment of substrates after a material is no
removal of graffiti from their surface.
longer graffiti resistant.
3.1.3 sacrificial anti-graffıti coatings, n—the property of
1.3 The values stated in SI units are to be regarded as
coatings in which they are destroyed or damaged during the
standard. No other units of measurement are included in this
removal of graffiti, therefore requiring subsequent re-
standard.
application.
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
4. Summary of Practice
responsibility of the user of this standard to establish appro-
4.1 Spray paints and markers are applied to a series of
priate safety, health, and environmental practices and deter-
concrete, masonry and natural stone test panels pre-treated
mine the applicability of regulatory limitations prior to use.
with the product(s) to be evaluated. The paint(s) and mark(ers)
1.5 This international standard was developed in accor-
are removed using a series of commercial building cleaning
dance with internationally recognized principles on standard-
methods which begin with the least aggressive method, high-
ization established in the Decision on Principles for the
pressure water wash with a commercial graffiti cleaner and
Development of International Standards, Guides and Recom-
proceed to increasingly aggressive cleaning methods such as
mendations issued by the World Trade Organization Technical
high-pressure hot water wash and high-pressure sodium bicar-
Barriers to Trade (TBT) Committee.
bonate wash.
2. Referenced Documents
5. Significance and Use
2.1 ASTM Standards:
5.1 Graffiti on buildings and structures is a significant
D3924 Specification for Standard Environment for Condi-
problem in various regions across the country. A variety of
coatings have been developed to be either resistant to the
application of paints/marker or to aid in their removal. This
This practice is under the jurisdiction of ASTM Committee D01 on Paint and
standard practice describes a procedure for evaluating the
Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.47 on Concrete, Stone and Masonry Treatments.
effectiveness of anti-graffiti coatings applied to various
Current edition approved Jan. 1, 2021. Published January 2021. Originally
concrete, masonry and natural stone substrates. It does not
approved in 2006. Last previous edition approved in 2014 as D7089 – 06 (2014).
address graffiti removal on metal or any other non-mineral
DOI: 10.1520/D7089-06R21.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or substrate.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5.2 This practice only addresses graffiti removal on sub-
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. strates in a laboratory environment, that have not been exposed
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D7089 − 06 (2021)
to either natural or artificial weathering. Specification D6578 specimen.Apply each color of paint and marker parallel to the
describes a method for graffiti removal after both natural and previous. Apply paint at a constant speed, maintaining a
artificial weathering. distance of 6 in. from the specimen. Apply markers with a
constant pressure.
6. Apparatus
10.2 Painted/marked specimens shall be given typically a
6.1 Commercial based graffiti removers used for concrete,
five-day cure period under the same conditions as the condi-
masonry and stone surfaces are utilized to remove graffiti.
tioning period in 9.2.
Follow manufacturer guidelines for application instructions.
This is followed by high-pressure cold water washer to clean 11. Graffiti Removal Procedure Using High-Pressure
Equipment
the substrate.
11.1 Clean each specimen with a high-pressure water
6.2 High-pressure cold water washer, capable of maintain-
ing a pressure of 800 to 1500 psi, equipped with a fan type washer. Maintain a distance of 10 in. from each specimen,
applying horizontal back and forth sweeping motion. Clean
spray tip that disperses water at an angle of at least 15 degrees,
with a flow rate of 4 to 6 gal per minute. each type of substrate for the same length of time. The same
type of spray nozzle must be used for all testing.
6.3 High-pressure hot water washer, capable of maintaining
apressureof800to1500psi,andtemperaturesof140to180°F 11.2 Report the p
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