Barricading should only put 80% of the amount needed to barricade only to the top portion of a door.
The remaining 20% would place them on the bottom half of the door if player want to completely shutdown an opening
i.e : if 8 plank are needed to barricade
6 plank would fit the top half of the door
2 plank would then be placed for the bottom half
Doing so would allow player to let a barricaded door exist without having to destroy it when they want to exit.