09 9620 - Graffiti-Resistant Coatings

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Author Message Jeff Williams RA Senior Member Username: architectjw Post Number: 12 Registered: 10-2013 Posted on Monday, April 28, 2014 - 12:14 pm:    Does anyone have any recommendations for Graffiti-Resistant coatings for Brick and split face masonry? I also have some EIFS that may need a coating. I have looked and Chemical Products and Prosoco. I was speaking to a representative and they said the sacrificial wax coatings can sometimes leave a white film. All of the products appear change the color of the masonry to some degree. I don’t have any experience with this one so I would appreciate anyone’s comments. I am leaning to non-sacrificial products at this time. Thanks, Jeff Wayne Yancey Senior Member Username: wayne_yancey Post Number: 648 Registered: 01-2008 Posted on Monday, April 28, 2014 - 12:36 pm:    Jeff, I would look to Evonik Corporation for the Protectosil Antigraffiti. Go to www.protectosil.com Robin E. Snyder Senior Member Username: robin Post Number: 533 Registered: 08-2004 Posted on Monday, April 28, 2014 - 02:22 pm:    I would talk to the EIFS manufacturer's as well - my past research led me to the conclusion that there are compatibility issues with graffiti coatings and EIFS and they aren't recommended anon (Unregistered Guest) Unregistered guest Posted on Monday, April 28, 2014 - 02:17 pm:    I second Wayne's recommendation, it's the only stuff I specify for porous substrates. Note that this product requires a "prep" coat of one of Evonik's water repellents, which works out pretty well because we specify water repellent for all of these substrates as a default requirement, and it's then an easy thing to specify/show an additional application of the graffiti-resistant product only over those areas that require it (typically up to about 8 feet above the adjacent waking surface). J. Peter Jordan Senior Member Username: jpjordan Post Number: 723 Registered: 05-2004 Posted on Monday, April 28, 2014 - 02:32 pm:    A really, really good anti grafitti coating is probably going to change the appearance of the underlying material. The others are going to make cleaning most of the grafitti easier, but are probably not going to do the job with a really aggressive graffitti environment. Verify the amount of grafitti you client expects, then chose a product, possibly with compromises from the designer. Ronald L. Geren, FCSI, AIA, CCS, CCCA, SCIP Senior Member Username: specman Post Number: 1210 Registered: 03-2003 Posted on Monday, April 28, 2014 - 02:46 pm:    Another thing to keep in mind is the actual cleaning process. Some manufacturers have products that require only soap and water to remove the grafitti (I think Protectosil is one) and others require an additional proprietary product for removal. Ron Geren, FCSI, AIA, CCS, CCCA, SCIP www.specsandcodes.com Jeff Williams RA Senior Member Username: architectjw Post Number: 13 Registered: 10-2013 Posted on Monday, April 28, 2014 - 03:23 pm:    Thanks for all the info! I will need to check into the blocks to make sure they don't have a water repellant in the mix. Or that it would be compatible. I will check on the degree of graffiti problem. Higher levels of protection can/will cause higher discoloration. That would be a good one to make clear with the client. I will have them install it on the mock-up half way up also. Cleaning with just soap and water would be a big plus also. Thanks, Jeff John Bunzick, CCS, CCCA, LEED AP Senior Member Username: bunzick Post Number: 1570 Registered: 03-2002 Posted on Monday, April 28, 2014 - 03:59 pm:    I would think that the issue raised by Robin is going to be paramount. Most anti graffiti coatings are applied to porous concrete block (portland cement product) or brick (fired clay). EIFS, while it looks a little like stucco (portland cement product), it is actually an acrylic coating. Thus, I would not expect these two coatings would be happy together. Jeff Williams RA Senior Member Username: architectjw Post Number: 14 Registered: 10-2013 Posted on Monday, April 28, 2014 - 04:17 pm:    I realize that the EIFS is a weak point. I have called both Protectosil and Dryvit. I will be sending Dryvit the Protectosil cut sheets to get their response. If I get a positive response from Dryvit. I will post it. Protectosil said they would work on EIFS but as a sacrificial coating. I am thinking that Dryvit probably will not Ok it. Looks like we will be putting some Graffiti on the mock up wall for a test. That would be something I have never done before! Jeff ken hercenberg Senior Member Username: khercenberg Post Number: 750 Registered: 12-2006 Posted on Monday, April 28, 2014 - 10:14 pm:    Mockups are a very good idea. There are a lot of coating products out there and some that work well for one substrate may not work with another. Caution, sealing porous products such as brick and CMU can lead to spalling since they will not allow air or vapor to permeate. You may need to increase the number of vents you build into your wall to permit greater air flow. I would definitely advocate upper and lower vents to create air flow behind the veneer. You might want to look seriously at compartmentalization as well to increase the effectiveness of your air flow. I've found it cheaper and more effective aesthetically to recoat the EIFS on an as-needed basis, often requiring sanding or other removal methods of the graffiti first. Frankly I would not use EIFS as locations prone to 'tagging'. Justatim Senior Member Username: justatim Post Number: 59 Registered: 04-2010 Posted on Tuesday, April 29, 2014 - 08:52 am:    In the mockup, be sure to include the expected variety of anticipated graffiti materials that are common in the area: spray paint, crayon, alcohol-base markers, etc. The variety of graffiti chemistries requiring removal is a big challenge for anti-graffiti products. Tom Gilmore, AIA, CCS, CCCA, LEED AP Senior Member Username: tgilmore Post Number: 41 Registered: 04-2007 Posted on Wednesday, April 30, 2014 - 02:52 pm:    Anybody have a legible copy of Protectosil product data? Ronald L. Geren, FCSI, AIA, CCS, CCCA, SCIP Senior Member Username: specman Post Number: 1215 Registered: 03-2003 Posted on Wednesday, April 30, 2014 - 06:56 pm:    http://www.protectosil.com/sites/dc/Downloadcenter/Evonik/Product/Protectosil/us/Technical-Datasheets/Protectosil%20Antigraffiti%20Product%20Data%20Sheet-USA%20092013.pdf Ron Geren, FCSI, AIA, CCS, CCCA, SCIP www.specsandcodes.com Tom Gilmore, AIA, CCS, CCCA, LEED AP Senior Member Username: tgilmore Post Number: 42 Registered: 04-2007 Posted on Wednesday, April 30, 2014 - 11:55 pm:    Much better! Thanks, Ron!