ASTM D7089-06
(Practice)Standard Practice for Determination of the Effectiveness of Anti-Graffiti Coating for Use on Concrete, Masonry and Natural Stone Surfaces by Pressure Washing
Standard Practice for Determination of the Effectiveness of Anti-Graffiti Coating for Use on Concrete, Masonry and Natural Stone Surfaces by Pressure Washing
SIGNIFICANCE AND USE
Graffiti on buildings and structures is a significant 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 standard practice describes a procedure for evaluating the effectiveness of anti-graffiti coatings applied to various concrete, masonry and natural stone substrates. It does not address graffiti removal on metal or any other non-mineral substrate.
This practice only addresses graffiti removal on substrates in a laboratory environment, that have not been exposed to either natural or artificial weathering. Specification D 6578 describes a method for graffiti removal after both natural and artificial weathering.
SCOPE
1.1 This practice covers a basic method for evaluating the performance of anti-graffiti products on mineral building substrates by a series of increasingly abrasive cleaning methods. The anti-graffiti materials are applied to a series of concrete, masonry and natural stone specimens for evaluation. Graffiti resistance is based on how a defined set of markings are removed by a designated set of cleaning techniques.
1.2 This practice also defines a procedure to evaluate graffiti removal after re-marking with subsequent re-cleaning. It does not address the re-treatment of substrates after a material is no longer graffiti resistant.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
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.
General Information
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D7089 − 06
StandardPractice 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 3.1.2 non-sacrificial anti-graffıti coatings, n—the property
of a coating in which they remain intact or undamaged after the
1.1 This practice covers a basic method for evaluating the
removal of graffiti from their surface.
performance of anti-graffiti products on mineral building sub-
3.1.3 sacrificial anti-graffıti coatings, n—the property of
strates by a series of increasingly abrasive cleaning methods.
coatings in which they are destroyed or damaged during the
The anti-graffiti materials are applied to a series of concrete,
removal of graffiti, therefore requiring subsequent re-
masonry and natural stone specimens for evaluation. Graffiti
application.
resistance is based on how a defined set of markings are
removed by a designated set of cleaning techniques.
4. Summary of Practice
1.2 This practice also defines a procedure to evaluate graffiti
4.1 Spray paints and markers are applied to a series of
removal after re-marking with subsequent re-cleaning. It does
concrete, masonry and natural stone test panels pre-treated
not address the re-treatment of substrates after a material is no
with the product(s) to be evaluated. The paint(s) and mark(ers)
longer graffiti resistant.
are removed using a series of commercial building cleaning
1.3 The values stated in SI units are to be regarded as
methods which begin with the least aggressive method, high-
standard. No other units of measurement are included in this
pressure water wash with a commercial graffiti cleaner and
standard.
proceed to increasingly aggressive cleaning methods such as
high-pressure hot water wash and high-pressure sodium bicar-
1.4 This standard does not purport to address all of the
bonate wash.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
5. Significance and Use
priate safety and health practices and determine the applica-
5.1 Graffiti on buildings and structures is a significant
bility of regulatory limitations prior to use.
problem in various regions across the country. A variety of
2. Referenced Documents
coatings have been developed to be either resistant to the
application of paints/marker or to aid in their removal. This
2.1 ASTM Standards:
D3924 Specification for Environment for Conditioning and standard practice describes a procedure for evaluating the
effectiveness of anti-graffiti coatings applied to various
Testing Paint, Varnish, Lacquer, and Related Materials
D6578 Practice for Determination of Graffiti Resistance concrete, masonry and natural stone substrates. It does not
address graffiti removal on metal or any other non-mineral
3. Terminology
substrate.
3.1 Definitions:
5.2 This practice only addresses graffiti removal on sub-
3.1.1 graffıti resistant, n—the property of coatings to be
strates in a laboratory environment, that have not been exposed
resistance to the application of graffiti or exhibit easy removal
to either natural or artificial weathering. Specification D6578
of graffiti without surface damage, or both.
describes a method for graffiti removal after both natural and
artificial weathering.
This practice is under the jurisdiction of ASTM Committee D01 on Paints and
Related Coatings, Materials, and Applications and is the direct responsibility of
6. Apparatus
Subcommittee D01.47 on Concrete, Stone and Masonry Treatments.
6.1 Commercial based graffiti removers used for concrete,
Current edition approved Jan. 15, 2006. Published February 2006. DOI:
10.1520/D7089-06.
masonry and stone surfaces are utilized to remove graffiti.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Follow manufacturer guidelines for application instructions.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
This is followed by high-pressure cold water washer to clean
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. the substrate.
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D7089 − 06
6.2 High-pressure cold water washer, capable of maintain- 11. Graffiti Removal Procedure Using High-Pressure
ing a pressure of 800 to 1500 psi, equipped with a fan type Equipment
spray tip that disperses water at an angle of at least 15 degrees,
11.1 Clean each specimen with a high-pressure water
with a flow rate of 4 to 6 gal per minute.
washer. Maintain a distance of 10 in. from each specimen,
applying horizontal back and forth sweeping motion. Clean
6.3 High-pressure hot water washer, capable of maintaining
each type of substrate for the same length of time. The same
apressureof800to1500psi,andtemperaturesof140to180°F
type of spray nozzle must be used for all testing.
equipped with a fan type spray tip that disperses water at an
angle of at least 15 degrees, with a flow rate of 4 to 6 gal per
11.2 Report the percent of paint/marker removed. If the
minute. paint is completely removed from all replicate test specimens
the surface is rated as “Cleanability Level 1.”
6.4 High-pressure sodium bicarbonate washer, capable of
NOTE 2—Always test the specimen to ensure the high pressure water
maintaining a pressure of 800 to 1500 psi, equipped with a fan
doesn’t cause damage to the surface.
type spray tip that disperses water at an angle of at least 15
11.3 Clean each specimen with a commercial
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