Metal is Tobler Duncker's preferred material for attractive exteriors, and Copper Sales is the firm's supplier of choice. The company's Una-Clad roofing and siding products come in aluminum, copper, stainless steel, or with a polyester-based painted finish. For the roof shown in the project above, the firm used a corrugated, bonderized product with exposed fasteners. The “simple quality serves the modern representation of the ranch/agricultural vernacular,” Duncker says. Una-Clad, 800.426.7737; www.unaclad.com.