What is the primary purpose of using a roller tray?

The primary purpose of using a roller tray is to hold and distribute paint evenly. Roller trays are designed with a shallow basin that contains the paint and a textured surface that allows the roller to pick up the right amount of paint without over-saturating it. This ensures a smooth and consistent application on the surface being painted. The shape and size of the tray make it easy for the roller to access the paint and the raised ridges help to remove excess paint from the roller, allowing for efficient and even coverage.

While a roller tray may be used to pour paint into it or to mix paint, those are secondary functionalities. The key advantage lies in its ability to facilitate an even application, making it an essential tool in the painting process. Additionally, using a roller tray can help reduce waste, but its primary design remains focused on even distribution and application of paint.