The action of applying a protective finish to a surface previously coated with a casein-based paint is critical for longevity. This process enhances durability, guards against moisture damage, and prevents the paint from easily chipping or scratching. For example, applying wax or varnish after the paint has cured creates a robust barrier.
Protecting this type of coating is important because the paint itself is porous and susceptible to environmental factors. This additional layer can significantly extend the lifespan of the finish, preserving its aesthetic appeal and structural integrity. Historically, various methods were employed to ensure the preservation of painted surfaces, ranging from natural oils to more modern synthetic solutions.
