I live in a huge home and my first floor is ten feet off the ground and my third floor is forty feet. Every night my son goes into one of his sleep walking episodes he always unlocks the door and goes outside. A few nights ago he was sleeping on the third floor and tried to go to the roof door. I have started putting him to sleep in the living room but now he is trying to go back upstairs in his sleep if he doesnt go out the front door. I am losing sleep in fear he may end up in the wrong situation. Why is he doing this and how do i make it stop.