The paint does not withstand washing and is being removed from the surface when you try to wash it.

Reasons:

• Using an inappropriate paint for the surface
• Use of excessively strong cleaning agents
• The paint was not dry enough before being tested for washability
• The paint does not withstand washing

Solution:

Clean the surface, sand the surface and apply a high quality ER-LAC paint which is washable.

High-quality paints have a high resistance to brush washing, so they can be washed and cleaned very easily without affecting the coating.