What is an appropriate amount of paint coats to protect a tank from deterioration?

Using two or more coats of paint is recommended for protecting a tank from deterioration because it ensures a more durable and effective barrier against environmental elements such as moisture, chemicals, and corrosion. The first coat typically serves as a primer or base layer that adheres well to the tank's surface, while the additional coats enhance overall coverage and protection.

Each additional layer of paint not only improves the thickness of the coating but also fills in any imperfections and provides better adhesion. This is particularly important in industrial settings where tanks are often exposed to harsh conditions that can compromise their integrity over time. A multi-coat system helps to extend the life of the tank and reduce maintenance costs associated with corrosion and repair.

While one coat might seem sufficient in some instances, it often does not provide adequate protection. Additionally, the notion that no coats are required for new tanks overlooks the fact that even new surfaces can benefit from protective coatings to prevent issues that could arise from environmental exposure. Thus, the recommendation for two or more coats strikes a balance between effectiveness and practicality.