Thursday, January 15, 2009

Polished Concrete Hues

By Rick Amorey

Thinking I was some sort of concrete polishing expert, one of my friends invited me to his place a couple of weeks ago. He wanted me to check out his concrete floor if it's fit to be polished. The floor was extremely ugly, however, and I had serious doubts. Nevertheless, I got a contractor to check it out, and he said that the floor still had a chance to be special.

I recently went back to his place again, eager to see the progress on the floor. What I saw blew me away, and strengthened my astonishment for concrete polishing even further.

When we were removing the carpeting that covered my friend's concrete, we realized that some genius decided to nail the carpet to the floor. The problem then became the chips and cracks left behind by this. My contractor had an idea, though. Perhaps he could use the crack lines as a guideline for a new design.

The surface being prepared, he was ready for coarse grinding. My understanding of the concrete polishing process is limited, but I will try to explain. Basically, concrete polishing involves a series of diamond tooling with progressively higher diamond grits. The lower grits are meant for coarse grinding, which reveals some aggregate which adds design to the concrete.

He then told me that he used the crack lines as a guide, and applied various colors on each design element. He did this in between grinding and the higher grit polishing, he said, because higher grits "close" the concrete. The color will then be set in.

As I've noted before, the end result was astonishing. Like mine, which sported a coffee-colored hue, my friend's home now has colored, polished concrete. His floor, however, was a combination of favorably-colored hues. Now my friend keeps on bragging at how better his floor is when compared to mine. Go figure. - 16492

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