These include taking into consideration the visual impact and function from the exterior such as: Window Sashes: Mullions, Arches, Picture Windows Roofing: Copper, Slate, Asphalt Foundation: Floating, Full The great thing about the bay window is the options. My best friend from college had this great bedroom - the size I wasn't ranch below appears to use the dormers in lieu of skylights - adding light and adding architectural delight to that large expanse of roofing. Just that added charm of the divided window pane takes us back to yesteryear as if I in the tree top communing with nature