How can you prevent roller marks when painting ceilings?

Using a thicker nap roller and applying paint in a consistent, overlapping pattern is an effective method for preventing roller marks when painting ceilings. A thicker nap roller holds more paint, allowing for better coverage and a smoother application on textured surfaces like ceilings. By ensuring that the paint is applied in a consistent and overlapping manner, it helps to eliminate any gaps or streaks that might occur if the paint is rolled in a disjointed or inconsistent pattern.

When using a thicker nap, it creates a more uniform texture and helps the paint fill in any imperfections or slight texture variations on the ceiling surface. The overlapping technique ensures that each stroke blends into the previous one, minimizing the chances of roller marks or lines.

In contrast, using a flat brush may not provide the necessary coverage for ceilings, as brushes tend to leave visible strokes, and they may not be efficient for larger areas. Painting in one continuous stroke can be challenging and may not adequately cover areas once the roller is lifted, especially if the pressure or angle of application changes throughout the process. Lastly, using less paint on the roller might lead to inadequate coverage and could actually increase the visibility of roller marks, rather than reducing them.