Blocking
 

Description:
Undesirable adhesion between painted surfaces, i.e., windows and frames or doors. The paint sticks to itself when a window or door is opened and usually leaves bare patches of substrate.

Possible Cause:
• Not allowing sufficient dry time for the coating before closing doors or windows.

• Use of a semi-gloss or gloss paint with low blocking resistance.

• Painting in warm damp conditions.

Solution:
Use a high quality semi-gloss or gloss latex or oil paint with good blocking resistance. Lower quality latex paints can have poor block resistance, especially in warm, damp conditions. Follow paint label instructions regarding dry times. Application of talcum powder may relieve blocking.

Recommended System:
Topcoat
FLEX BON #81 Series PINNACLE Interior Acrylic Semi-Gloss