A well-coated structure is defined as what percentage or better?

A well-coated structure is defined as having a percentage of coating coverage that meets or exceeds 99%. This high standard is set because effective corrosion protection requires nearly complete coverage of the substrate. Achieving 99% or better ensures that there are minimal gaps or defects in the coating, which could lead to corrosion initiation and potential structural failure. Coatings function to isolate the substrate from corrosive elements; thus, the more complete the coverage, the better the protection provided.

Standards in the industry recognize that a well-coated surface is crucial for maintaining long-term integrity in a variety of environments. Other percentages listed, although they might signify competent coating application, do not meet the stringent requirement set forth for what constitutes an excellent protective coating. This emphasizes the importance of quality in surface preparation and application techniques, ensuring that the end result minimizes the risk of corrosion.