If epoxy-coated rebar is used, what should be verified?

• A. Epoxy coating integrity without holidays or damage, and proper surface preparation if required.
• B. Only the color of the coating.
• C. The coating is optional and can be ignored.
• D. The coating temperature.

Answer: (A)

The main idea is that epoxy-coated rebar must provide a continuous barrier against corrosion, so the inspector’s focus is on the coating’s condition and its bond to the substrate. If the coating has any holidays (tiny voids or damaged spots) or visible damage, the protective function is compromised, exposing the steel to moisture and chlorides in the concrete. That’s why verifying coating integrity and ensuring there are no holidays is essential. Additionally, if the specification requires surface preparation, you must confirm that the steel surface was properly cleaned and prepared so the coating can adhere effectively. Color or temperature of the coating aren’t indicators of protection in this context, and treating the coating as optional would defeat its purpose.