Of course, I know that there is no proper way to remove the barricades inside.
But I don't understand. Barricades must be set upped at inside, not outside. And also the barricades are stop not only zombies but also people, even the players. And think about it, a house owner or what, how can they barricade outside and how can get in their own house?
Whatever the problem is, I think the barricade on the outside looks a little awkward.
p.s My English skill is not good. I am sorry for that.