Floor Grade?

Floor Grade?

Posted by Bryon Hendricks on Jun 25th 2018

Much has been done, in regards to specifications, to determine the outcome of the floor polishing on any given project.  We have specifications outlining the quality of the concrete pour, the aggregate exposure, the sheen level, etc...

If you get the same project twice, with the same specification, and the same polishing contractors, shouldn't you get the same results? Why doesn't that work?

We are missing the big picture of polished concrete. Some floors look amazing, super flat, no flaws, beautiful exposed aggregate, and the shine . . . "Wow."  Then you get the wavy floor, trowel chatter, pits, fuzz, various aggregate exposures, pockets of high sheen and low sheen . . . Why?  

When you look at both of these pictures you will see the  aggregate exposure is the same, the sheen is the same, but the outcomes are very different. What happened? Floor flatness caused different results. 

Specifications require polishers to have multiple projects, years of service, specific chemicals, and specific tooling processes. But in reality, a concrete polisher with the right tooling, equipment, and chemicals can polish a high quality concrete floor fairly easily. Experienced polishers will have the expertise to re-mediate some of these issues in the field, but you may need more than that to get the results your customer expects.

I have looked online to find concrete contractors who specialize in pouring flat and super flat floors.  Although these contractors are likely more expensive, you should choose one of them when your project requires the highest quality.  Too many floors are being poured by concrete contractors without the proper equipment and skill set to provide a super flat floor needed for a high-end polished floor. 

Pour a great concrete floor, flat, level, and finished properly will give you the following results. Demand it!

Note: I would like to see an addition to specifications.  You have Ff, Aggregate exposure, and sheen levels.  Let's add a grade level of premium, as seen above, general, with some wavy and spotty areas, and basic, showing polished flaws, cracks, wavy, variegated aggregate.  

With this addition everyone involved would clearly understand what the outcome is expected to be before the job is bid, awarded, and finished. 

Premium floors could cost $6.00 - $14.00 and up.

General floors could cost $3.00 - $6.00 and up.

Basic floors could cost $1.50 - $3.00 and up.