Prevent Paint Rollers from Drying Out with This Household Staple.

To keep a paint roller from drying out overnight, wrap it tightly in plastic wrap and store it in a cool place. If the break is shorter, use a sheet of plastic wrap to cover the roller and tray. Pour extra paint into the tray to prevent it from drying out. Other options include using aluminum foil, plastic wrap from a loaf of bread, or the original plastic wrapping that came with the roller. Wear gloves when handling the roller, as it will be messy.