I guess this was already asked before, but I can't find any post.
Here is the problem.
You build a roof like this /^\ two angled roof with a peaked roof at the top.
Case 1: the front and the back walls are vertical. In this case you can use a gable end.
Case 2: The front or the back walls have 45° too... in this case you have a hole in the roof.
I searched truth all tile sets and can't find it. A gable end with 3 45°
EDIT: Never mind, forget this request. The building was too unstable, I could place the gable end, after I put pillars below it. My mistake.
