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Author
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Comments
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gopolyurea.com
Q&A Forum Registered User
Posted: 6/19/2006 1:38 PM
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Non Skid Surfaces
Need some information on how to get an absolute non skid surface on steps while spraying polyurea. I texturized the surface, but when the water is applied, it becomes too slippery.
Is there a different technique to this, or is there an additional product that needs to be used? In order to increase adheasion, I was going to use a pure polyurea with a 6 second gel time, but ended up going with a 2 second gel time in order to increase non skid surface when texturing. Would appreciate input, as to this is the beginning of a large project. Any composite, sand ??????
Thank You!
Jeff Dunkel
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Sea
Q&A Forum Registered User
Posted: 6/20/2006 7:53 PM
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RE: Non Skid Surfaces
Jeff,
Appx. 4-5 years ago, the SSPC Conference had presentation about the addition of polyolefin beads to coatings for slip resistance. The data produced was very impressive. The beads were mixed into the coating prior to application however. They would most likely have to be hand broadcast into the polyurea. The beads are very small, however they would most likely clog the gun screens or cause a blockage in the mixing chamber. If the bead idea is not feasible, I would go with aluminum shavings. This is very aggresive and I would not want to fall on it, but I have seen it used.
Sean
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AaronB. 
Q&A Forum Registered User
Posted: 7/10/2006 2:07 PM
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RE: Non Skid Surfaces
I think you waould have to retard the cure, but I have also considered a hand-held fertilizer type spreader to get a uniform coating ofthe aggregate.
As far as what type aggregate, no clue. I have only used polyurea for roofing thus far.
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RickW
Q&A Forum Registered User
Posted: 8/06/2006 8:51 AM
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RE: Non Skid Surfaces
We have been applying an aromatic polyurea with an aliphatic topcoat. Due to the fast gel time broadcasting anti skid aggregate into the polyurea was unfeasable. With the topcoat you can roll a coat down , broadcast the aggregate. ( fine, silica size) Then lock it in with your second coat. I'm currently switching to a high pressure, slow cure set up. My plan is to spray the polyurea (aliphatic) broadcast either clear or color coordinated aggregate while the coating is still wet so it sinks in a little and becomes embedded. Then do a texture coat to further lock it in. I'll tell you how this works out after I test it more.
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AaronB.
Q&A Forum Registered User
Posted: 8/18/2006 11:24 PM
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RE: Non Skid Surfaces
Please do, and bring back some pics, please. :)
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Volatile Free Inc.
Q&A Forum Registered User
Posted: 9/16/2006 12:26 PM
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RE: Non Skid Surfaces
Spraying a hybrid polyurea with a 15 min open time first and then broadcast walnut shells into it, then spray your polyurea top coat to enclapsulate and provide a long lasting antiskid surface. walnut shells work great
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AaronB.
Q&A Forum Registered User
Posted: 9/25/2006 8:06 PM
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RE: Non Skid Surfaces
So where do we get the walnut shells?
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Stephen
Q&A Forum Registered User
Posted: 10/20/2006 7:51 AM
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RE: Non Skid Surfaces
Ground up zebra muscle shells from the Lake Erie coast have been the best non skid surface that I have ever applied to the initial topcoat. I have access to them and devised a grinding machine to break them down to an applicable size.
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DICoatings
Q&A Forum Registered User
Posted: 10/23/2006 4:07 PM
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RE: Non Skid Surfaces
We have had good luck using aluminum oxide brodcast at the same time as the polyurea, using a simple $35 Homax drywall texture gun with a 1 gal. hopper. This will also work with sand or walnut shells. I would not use sand if you have more than foot traffic because over time the sand will turn to powder. It is also best to build the additive, whatever it is, all the way through the product. If you just put it on the top with enough weight on it you can push the aggregate into the product and even go through to the substrate creating a void and a potential failure point. I have done this on several fishing boats and Liftgates on trailers for Pepsi. Works very well.
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gopolyurea.com
Q&A Forum Registered User
Posted: 10/23/2006 7:40 PM
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RE: Non Skid Surfaces
I have done several floors in the last couple of months and have used 5502 polyurea with a slow gel time from Polycoats, and am having great results.
I used a alaphatic single part top coat and broadcast aluminum oxide 32 grit with a stucco hopper, and air set to 25psi.
The skid testing company/Cal Osha rated our floor at 12 times the required limit. I also recommend that you use a dryer on the air compressor. Everyone was extremely happy with the floor.
When I get time, I will post pictures of the pool deck and walkway we just did in Tucson, Arizona that we just completed this week.
Jeff Dunkel
Aquatic Coatings, Inc.
Team Polycoat
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sandblast8
Q&A Forum Registered User
Posted: 1/28/2007 3:38 PM
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RE: Non Skid Surfaces
we have done several projects with non skid surface,,the technique we use is to 1st spray down your base coats of poly,then broadcast your aggregate(we use alum oxide or black beauty) over your base materail then do your texturecoats......this locks down the grit and keeps it near the top of the coating surface,,,,,,works great and wear well........mark
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RickW
Q&A Forum Registered User
Posted: 4/28/2007 10:44 PM
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RE: Non Skid Surfaces
As I wrote last year, I tried to lock in aggregate with a fog coat, thus eliminating the need for an aliphatic topcoat to inbed aggregate in. What I found was that some of the aggregate was partially exposed and would be knocked off with foot traffic leaving small voids in the surface of the polyurea that would immediately collect and retain dirt. Purely a cosmetic issue since the basecoat ( 45-55 mils.) was sound. I switched back to an aromatic base coat, 1 coat of aliphatic batch mix, top coat in which the aggregate is broadcast into, then 1 more coat to lock the aggregate in. If your using a sparce amount of aggregate and can reach with an extension you can do 1 topcoat broadcast and backroll. With a lot of aggregate backrolling will cause clumping. 3M quartz aggregate size S. Match it to the color of your topcoat.
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