I would be very thankful for some help from experienced builders.
In a house I'm building, one of the rooms is missing two rows of ceiling tiles, as seen in the picture below. (I love painting my ceilings in a wood pattern, otherwise I might not have noticed this.
But the balcony above this room isn't missing any floor tiles.
A side view to show that the outer edges of the balcony are directly above the outer edges of the room.
Does anyone know what is making these floor tiles visible from above, but invisible (or nonexistent?) from below?