Why is it important to remove debris and dust from a surface before coating?

Removing debris and dust from a surface before coating is crucial because it directly impacts the adhesion of the coating to that surface. When contaminants like dirt, dust, or debris are present, they can create barriers that prevent the coating from properly bonding. Good adhesion is vital for the durability and longevity of the coating; if the coating does not adhere well, it can lead to issues such as chipping, peeling, or flaking over time. Ensuring a clean surface provides a solid foundation for the coating application, allowing it to perform as intended, thus enhancing its effectiveness and overall quality.