Tuesday, June 19, 2012

Can I Stain Concrete that was Colored when it was poured?

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   Q. -   Is this acid staining product compatible with tinted concrete. The poured cement didnt come out the color I wanted.

Hello Lisa,
 
   A. -  Yes it is compatible with concrete that was colored when it was poured. It works fine with Integral colors, which is color that is added into the concrete in the truck and mixed in before being poured, and also with Color Hardeners, which is a colored powder that is added after the concrete is poured and then worked into the concrete's surface.
 
   However, the concrete must be free of any and all curing agents, sealers, oils, grease, wax, and other contaminants. So, if it hasn't been sealed yet you can go right ahead staining it.
 
   Please note: The final color that the stained concrete will be, will be affected by the existing color of the concrete, so tests are certainly needed before staining the entire project to ensure that you like the color it's going to be.
 
I hope this helps
 

Monday, June 11, 2012

I have slippery sealer. What can I do?

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   Q. -   Hello, We live in MN and have a stained and sealed patio that is VERY slippery. With 3 little grandchildren it has become a major concern for me.  Even if the patio is dry and they run across it with wet feet after playing in the pool or sprinkler they will go flying. How can we roughen this up to make it safe?  Thanks!
 
Hello Sue,
 
   A. -   You could of course strip the sealer off, which may be the best in this case. The manufacturer of the sealer used could tell you how best to strip it off, but basically you can use a citrus stripper and straw scrub brush and/or a power washer. Also, you could rent a sandblaster and blast it.
   You could also put a new coat of sealer on that has a traction additive mixed in it. Our Clear Grip traction additive has a sandpaper finish but sealed concrete is still slippery regardless. You should do a test area before doing the entire project.
 
   Another thing to think about is this: if you used a solvent base sealer then it will be much more slippery than a water base sealer because you put solvents on as thick as you can which totally covers over the texture on the surface of the concrete and completely smoothes it off, as to where a water base sealer is put on as thin as you can which allows the the texture in the concrete to still come through, thereby being less slippery.
 
   Again, any sealed concrete can be slippery, especially when wet, so do a test area of whatever you decide to do.
 
I hope this helps