ASTM D7089-06(2014)

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Designation: D7089 − 06 D7089 − 06 (Reapproved 2014)
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
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 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
limitations prior to use.
2. Referenced Documents
2.1 ASTM Standards:
D3924 Specification for Environment for Conditioning and Testing Paint, Varnish, Lacquer, and Related Materials
D6578 Practice for Determination of Graffiti Resistance
3. Terminology
3.1 Definitions:
3.1.1 graffıti resistant, n—the property of coatings to be resistance to the application of graffiti or exhibit easy removal of graffiti
without surface damage, or both.
3.1.2 non-sacrificial anti-graffıti coatings, n—the property of a coating in which they remain intact or undamaged after the
removal of graffiti from their surface.
3.1.3 sacrificial anti-graffıti coatings, n—the property of coatings in which they are destroyed or damaged during the removal
of graffiti, therefore requiring subsequent re-application.
4. Summary of Practice
4.1 Spray paints and markers are applied to a series of concrete, masonry and natural stone test panels pre-treated with the
product(s) to be evaluated. The paint(s) and mark(ers) are removed using a series of commercial building cleaning methods which
begin with the least aggressive method, high-pressure water wash with a commercial graffiti cleaner and proceed to increasingly
aggressive cleaning methods such as high-pressure hot water wash and high-pressure sodium bicarbonate wash.
5. Significance and Use
5.1 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
This practice is under the jurisdiction of ASTM Committee D01 on Paint and Related Coatings, Materials, and Applications and is the direct responsibility of
Subcommittee D01.47 on Concrete, Stone and Masonry Treatments.
Current edition approved Jan. 15, 2006Dec. 1, 2014. Published February 2006December 2014. Originally approved in 2006. Last previous edition approved in 2006 as
D7089 – 06. DOI: 10.1520/D7089-06.10.1520/D7089-06R14.
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D7089 − 06 (2014)
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.
5.2 This practice only addresses graffiti removal on substrates in a laboratory environment, that have not been exposed to either
natural or artificial weathering. Specification D6578 describes a method for graffiti removal after both natural and artificial
weathering.
6. Apparatus
6.1 Commercial based graffiti removers used for concrete, masonry and stone surfaces are utilized to remove graffiti. Follow
manufacturer guidelines for application instructions. This is followed by high-pressure cold water washer to clean the substrate.
6.2 High-pressure cold water washer, capable of maintaining a pressure of 800 to 1500 psi, 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 minute.
6.3 High-pressure hot water washer, capable of maintaining a pressure of 800 to 1500 psi, and temperatures of 140 to 180°F
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 minute.
6.4 High-pressure sodium bicarbonate washer, capable of maintaining a pressure of 800 to 1500 psi, 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 minute. Also known as baking
soda or soda blasting.
7. Reagents and Materials
7.1 Anti-graffiti product(s) to be evaluated.
7.2 Solvent based spray paint recommended colors: black, blue and red.
7.3 Solvent based ink markers recommended colors: black, blue and red.
NOTE 1—Blue and red colors are known to be the most difficult colors to remove.
8. Sampling, Test Specimens, and Test Units
8.1 Any of the following mineral building subs
...