Which of the following tests would typically assess the condition of a coating before applying additional layers?

Visual inspection is a fundamental method used to assess the condition of a coating before additional layers are applied. This process involves a thorough examination of the surface to identify any visible defects such as cracks, blisters, peeling, or discoloration that may negatively affect the adhesion of subsequent layers. Visual inspection helps determine whether the existing coating surface is clean, dry, and free from contaminants, which are crucial considerations for achieving a successful coating application.

Conducting a visual inspection provides valuable insights that can guide the next steps in coating application, including surface preparation or the decision to apply additional layers. This method is often the first step in ensuring that the substrate is in an acceptable condition for further work. In contrast, other tests mentioned serve different purposes; for instance, Bresle Patch testing focuses on measuring soluble salts, while sleeve tests assess the quality of the coating's application. Soluble Salt Meters are used specifically to determine salt contamination levels, which can impact coating performance, but they do not assess the physical condition of the coating itself.