New plywood deck is rated for a floor load as well as snow and ice load.  Shown is resin paper underlayment and stacks of pretinned pans, ready for installation.  Pretinning facilitates filling of a solid, sound solder joint, an absolute requirement for a zero pitch roof like this one.  Note the built in cleats projecting from the pan seams. This is our exclusive design.  Foot traffic would wear high spots from conventional separate cleats. 

Completed deck, with railing.  Note extensive back flashing under the door, siding and adjacent pitched roof.  Railing posts do not penetrate the copper where they could compromise integrity of the roof.  Also because of traffic wear, 20 oz. copper was used.  Note the standing water, a condition that this zero pitch roof will withstand over and over during its long life.

This is a floor AND a roof.  The structure must be rated accordingly.

Installation of perimeter drip edge, over which the pans will be seamed. Drip edge is the first step in sheet metal roofing applications.

Detail of post attachment, note structural clip at bottom of cedar post, soldered to the copper panel and braced with a copper diagonal support, also soldered direct to the roof.  Note use of a narrow perimeter panel, which attaches to the drip edge and to the rectangular panels.  This presents a cleaner edge than that offered when the four-layers-thick panel seams are bent over the drip edge.