Coated or Sealed Concrete are top coats used to protect or beautify the concrete substrate
Depending on the types of coatings required there are small but important steps.
Types of coatings vary from sealers that sit in the surface of the concrete, special water proofing liquids that penetrate and solidify to top coating systems the bond to the surface of the concrete.
Each application requires the right product for the type of use it may be subjected to. Example, a floor needs to be sealed in an air craft hanger. Due to leaking chemicals it would require a chemical resistant epoxy, resin, aliphatic polyurea etc. The wrong product will brake down letting the chemicals migrate their way into the concrete substrate.