The Mallets Creek Branch Library is a striking building dominated by four copper-clad skylights. The peaked roof slopes at between 2:12 (9.5 degrees, or 16.7 percent) and 2.5:12 (11.8 degrees, or 21 percent) away from the skylights. A 2.5-inch thick Type II: Aromatic Garden assembly was installed. The maximum wet weight of this system is 15 pounds per square foot.

The cover of Sedum plants was established from 72-cell plugs from Emory Knoll Farms/Green Roof Plants.