The cladding system used on the ROM was very different from that used on Libeskind's previous crystal structure for the Denver Art Museum. Where Denver used a simple insulated cold formed steel infill system with titanium "shingles" as cladding, the ROM employed a complex prefabricated girt system that was attached to the steel diagrid using some 10,000 connectors. The grids had to be able to adjust to both the structural steel support system, as well as to expansion and contraction.
Insulated panels were fitted into the framing and sealed, forming the weather tight barrier. Channels were attached to this layer of cladding that would support the extruded titanium cladding. The final layer acts as a rain screen and is permeable by air and water. A heating system has been installed on the roof to promote winter melting and to prevent ice dams.
Photos: Terri Meyer Boake