Exterior cladding employs several different attachment methods depending on architectural look and choice of panel materials. General forms are either surface-mount (hanging) or flush-mount and rely either on back-side bolt attachment to the inside edge of the perimeter framing or front-side through-bolt attachment to outer surface slots of the perimeter framing. With surface-mount panels a sealing gasket (adhesive or compression-fixed) can be used on the front surface of the perimeter framing or on the back edge of individual panels and provides an additional thermal break for alloy panel materials. If using a gasket, flush panels must employ one on their perimeter edges, on the back edge, or integral to the inside frame edge slot attachment.
[Note: these panel subcategories will be further subdivided by individual panel compositions/designs as they are developed]