Over the last two decades, the demand for polished concrete has grown drastically. Twenty years ago, when Hoover & Wells started polishing concrete floors, customer expectation was set by specifying a desired gloss level. Although gloss testing is important, there are other tests that have been developed in recent years that will better define the overall expected outcome of the polished concrete surface. Distinctness of Image, Haze, and Roughness Average can be used in addition to the Gloss test to ensure the owner gets the quality floor he or she is paying for. The testing needs to be performed before the application of a sealer/guard because these products tend to give inflated readings. So, let's go over some of these terms and what they mean!