Blocking is primarily an interior paint problem. Blocking occurs when two painted surfaces, such as a door and window, are pressed together, causing them to stick, thus damaging the paint.
- Cause: Blocking usually occurs when there is insufficient drying time before pressing the newly painted surfaces together.
- Solution: Make sure you allow proper drying time as stated on the paint can label instructions. Make sure all doors and windows are moving freely before any painting is done. Sometimes talcum powder can help if the blocking is persistent.