The highly decorative metal cornices are an essential character-defining feature of the Cathedral. They truly mark the building as a Louis Sullivan design.
The sheet metal cornice work is used at the gutter around the perimeter of the Cathedral, at the gutters surrounding the Bell Tower turret, and surrounding the dome drum roof. These are believed to have been fabricated from galvanized sheet steel.
There have been a number of past repairs, most of which were “band-aids” rather than permanent repairs.
Restoration plans call for sheet metal roofing specialists to review the decorative gutter/cornices at close hand, and to make final assessment and required repairs. As much as possible of the original cornice material would be retained and restored as possible, rather than replicated. All repairs would be done using the same material and detailing as in the original. Old patches would be removed and original decorative items recreated.