Which paint systems can be used with epoxy topcoats?

Epoxy topcoats are versatile and can be applied over several types of paint systems that are in good condition. Using an epoxy topcoat requires the underlying surface to be properly prepared and free from contaminants, peeling, or damage to ensure optimal adhesion. When the existing paint system is well-maintained, epoxy solutions can enhance durability, chemical resistance, and overall aesthetics.

Choosing any paint system in good condition as a base provides flexibility in aircraft maintenance and repair processes. This characteristic allows technicians to optimize their work based on the specific needs of the aircraft, utilizing existing coatings without needing to strip everything down if the underlying layer is suitable for bonding.

In contrast, the other options are too restrictive. High-temperature paint systems, water-based systems, and synthetic enamel systems might have specific compatibility scenarios with epoxy, but they do not encompass the broader range of systems that are well-maintained and appropriate for use with an epoxy topcoat. Thus, the most inclusive and correct choice is that any paint system in good condition is suitable for use with epoxy topcoats.