One day while Dick was working on the roof, he heard a noise. When he looked up he saw two dogs standing on the roof watching him. The dogs had gone into the garage, up the stairs to the attic, and out onto the roof. The black wall in this picture was added after the dogs used the opening to get onto the roof. (sorry no pictures)
A square of roofing material is equal to 100 square feet ( 10 ft by 10 ft). Dick keeps telling us that a normal colonial house that he builds uses 15 squares, but this house is using 45 squares. I think the size is driven by all of the peeks on the roof and the attached garage.