Brush / Roller Marks

Brush or roller marks are frequent defects encoutered in coating applications that result in a poor quality image for end-users.

This unintentional textured pattern left in the dried paint occurs when paint:

• poorly wets the substate during the application
• fails to form a smooth film during the drying time

Such marks are typical of coatings with a too high surface tension. To impact this parameter and thereby facilitate spreading or impregnation of a surface, surface modifying additives like surfactants should be added in the formulation.

The use of suitable rheology modifiers will also help to reduce brush and roller marks.