Why is controlling humidity important during coating applications?

Controlling humidity during coating applications is crucial primarily because it prevents corrosion and enhances adhesion. High humidity levels can lead to the formation of moisture on the surface to be coated, which can interfere with the adhesion of the coating. If moisture is present, the coating may not bond effectively to the substrate, potentially leading to issues such as peeling, flaking, or blistering once the coating is cured. Additionally, elevated moisture levels can contribute to an environment conducive to corrosion, particularly if the substrate is metallic, as moisture can facilitate oxidation and rust formation. By managing humidity, you create optimal conditions for the coating to adhere properly and maintain the integrity and performance of the protective layer over time.