What should be done if the paint thickness exceeds 15 mils?

When paint thickness exceeds 15 mils, it can lead to several issues, including improper adhesion, a rough finish, or problems with the drying of the paint. In such cases, stripping the excess paint is the most effective solution. This process removes the thick layers, allowing for a fresh start with new paint application that adheres properly to the surface.

Stripping the paint not only removes excess material but also ensures that the surface is prepared correctly for further painting. It helps in achieving the desired finish and ensures that any potential defects caused by excessive build-up are eliminated.

While applying a top coat or sealing the surface might seem like viable options, they do not address the underlying problem of excess thickness and could lead to poor performance or aesthetic issues. Similarly, sanding down the layers might not be sufficient to remove the excess thickness adequately and could be time-consuming compared to stripping, which fully eliminates the issue.