Red Seal Painter and Decorator Practice Exam

Why should paint cans be shaken before use?

1. To enhance the paint's glossy finish

2. To ensure even distribution of pigment and avoid separation

3. To make the paint easier to apply

4. To check for any rust inside the can

The correct answer is: To ensure even distribution of pigment and avoid separation

Shaking paint cans before use is essential to ensure even distribution of pigment and to avoid separation. Paint formulations often contain a mixture of various components, such as pigments, solvents, binders, and additives. Over time, especially if the paint has been sitting for a while, these components can separate and settle at the bottom of the can. If the paint is not properly mixed, the product applied may have inconsistent color and texture, resulting in a poor finish. By shaking the can, the pigments are thoroughly mixed back into the paint, helping to achieve uniform consistency and color. This preparation step is crucial for ensuring that the final result will have the desired appearance when applied to surfaces. Proper mixing also contributes to the paint's performance attributes, such as its adherence and durability once applied.