The surface hatch placement on objects created from an extruded profile depends on two factors:
- the view directions assigned to the individual edges of the profile
- the direction of the extrusion
The desired extrusion direction depends on the object you want to extrude from the profile. A rail, for example, is extruded in the X direction. A railing post is extruded in the Z direction. Custom door and window shapes are extruded in the Y direction.

Face assignments from edges extruded in the X direction

Face assignments from edges extruded in the Y direction

Face assignments from edges extruded in the Z direction