Garage coating products (urethanes, epoxies, sealers, etc...) have to "stick" to the substrate (concrete floor) for a positive outcome. All the available products on the floor coating market share some facts. FACT 1: All floor coating products adhere to the substrate better when the substrate has an improved profile and porousness (excluding stains, densifiers and stainguards).
FACT 2: If the coating loses adhesion (peels, chips) it is probably the lack of preparation that is to blame, not the product itself.
This profile is measurable by the Concrete Surface Profile scale. This scale ranges from CSP 1 through CSP 9. See the scale below.
|Garage Floor Coatings, Concrete Floor Preparation And The Fool's Gamble!|
It is common for some vendors to recommend "no prep" or "no etching or grinding". These vendors are playing the odds that you may or may not have an issue. They are betting that enough people will purchase these products to outweigh the issues some will have. Why do they do this? Becaue most people are LAZY and want the EASY way out! When this happens you have become a unwilling participant in the "fools gamble". Don't be a fool.... prep your floor!!
Image from: http://shotblastinc.com/industry-guidelines/