First, you made a gaggle of the interior wall faces after which drew the rectangles for the home windows outdoors the group. Earlier than including the rectangles for the window openings it’s worthwhile to open the wall group for modifying so you’ll be able to add geometry to change the partitions. The opposite factor you’ve achieved is put the interior wall faces in a gaggle inside a gaggle that comprises the outer wall faces. With that association should you put the rectangles for the home windows contained in the interior group and push them by way of, the outer faces gained’t get lower. Seems like the simplest factor to do in the mean time is to blow up the entire teams, lower you openings and repair the face orientations. You should not have any uncovered blue faces.
Be aware you’ll have some hassle with the home windows I present chosen, beneath, as a result of the within and out of doors faces of the partitions aren’t parallel to one another. They most likely needs to be mounted to make them parallel.