Second Floor Tiling:
https://www.angelfire.com/mn3/advocate2/construction/stairs1.html
https://www.angelfire.com/mn3/advocate2/construction/stairs2.html
https://www.angelfire.com/mn3/advocate6/construction/stairs3.html
https://www.angelfire.com/mn3/advocate2/construction/2ndfloor1.html
https://www.angelfire.com/mn3/advocate2/construction/2ndfloor2.html
