What I seem to be having issues with is cutting the final 2 windows into the building using the Boolean Modifier. I have completed the same operation for the other windows with ease and had no issues with the process. With the last 2 windows on the wall when I use the boolean to cut I get a strange result where it basically builds the shape of my cube inside of the mesh I am trying to cut the hole in.
I have tried to read up on possible issues that can cause something like this. I am assuming the issue is because the wall is not manifold, but I do really know how to correct that if it is even the problem. I have played with normals, deleted all the edges I can, merged vertices, I have even thought to pull that particular wall away from the model to see if anything on the interior of the face would be an issue and I cannot come up with anything.
let me know if you need to see anything more and I will gladly post it.*