What is the primary purpose of cleaning a substrate before paint application?

Cleaning a substrate before paint application is crucial because it ensures better adhesion of the primer and paint. When a surface is clean, free of dust, grease, oils, and other contaminants, the paint can form a stronger bond with the substrate. This strong bond is essential for preventing issues such as peeling, flaking, or blistering, which can occur if contaminants interfere with the paint's ability to adhere properly. A clean surface allows for optimal conditions for the paint to grip, leading to a more durable and long-lasting finish.

While improving paint durability is related to adhesion, the primary goal of cleaning the substrate directly targets the ability of the paint to stick effectively. Likewise, increasing drying time and enhancing the color of the paint are not directly linked to the cleaning process, as they pertain to other factors in paint formulation and application rather than substrate cleanliness.