Hi Alan,
My recommendation is that you use the "Texture" node rather than the "Apply Texture," as it allows you to choose where the texture is applied. I've attached a revision to your file.
Also, I'm not sure what you were trying to do with the wall footprint and extrude? I'm assuming you were trying to adjust the height of the walls?
Currently, I'm only aware of changing the wall heights in Marionette by changing your layer height, which is what I've done here. I'll look into other options if you'd like!
- Marissa