What is the common failure that might indicate the need for inspection of a coating?

The common failure that typically indicates the need for inspection of a coating is peeling or chipping. When a coating begins to peel or chip away, it exposes the underlying material to environmental elements such as moisture, UV radiation, and other corrosive factors. This can lead to further deterioration of the substrate, potentially causing significant structural and aesthetic damage if not addressed promptly.

While fading in color and visible mold growth can also be signs of issues with a coating, they do not directly indicate its failure in the same way that peeling or chipping does. Fading may be a cosmetic concern and could suggest that the coating is degrading under UV exposure, but it doesn’t necessarily compromise the integrity of the material underneath. Visible mold growth is more indicative of moisture issues or improper ventilation rather than a specific failure of the coating itself.

In contrast, peeling or chipping is a clear sign that the bond between the coating and the substrate has weakened and requires immediate attention to prevent further issues. Thus, identifying this condition is crucial for timely maintenance and protection of building materials.