Some architects use copper as an accent or on unusual architectural features such as bay windows, round silo-style rooms, or turrets, where its special characteristics are best showcased. Copper coordinates beautifully as an accent to other roofing materials from cedar shakes to slate. For silo-style structures in a Telluride, Colorado home, Summit Roofing constructed special tension ring structural support systems. The round rooms were roofed in precisely cut copper sections. Summit pretreated and sealed the copper surfaces to eliminate that new-copper shine, achieve a preferred color, and arrest the development of further and inconsistent patina.