Undesirable sticking together of two painted surfaces when pressed together (e.g., a door sticking to the door frame).

Possible Causes:

Not allowing sufficient drying time for the coating before closing doors or windows. • Use of low quality semi gloss or gloss paints.

Solution:

  • Use Rainbow Eggshell or Gloss Paint.
  • Low quality acrylic paints can have poor block resistance, especially in warm, damp conditions.
  • Follow instructions on product packaging regarding dry times.
  • Pure acrylic paints generally have better early block resistance then oil-based paints; however, alkyds develop superior block resistance over time.
  • Application of talcum powder can relieve persistent blocking.