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Fire Retardant Treated Wood as Roof and Wall Sheathing

The Orchard at Westminster is designed to be reminiscent of the Main Streets of small towns in the first half of the 20th century. It is an open-air, entertainment and lifestyle center that comprises a million square feet of exclusive, outdoor, fashion-oriented retail including big boxes, department stores and smaller, upscale retailers.  The development also includes 500 housing units and office space. The name was selected to reflect the rich agricultural heritage of the area, which was home to some of the largest apple orchards in Colorado.

It was designed under the ICC International Build Code to be a Type II noncombustible structure of concrete and steel.  The IBC allows fire retardant treated to be used in the roofs and nonbearing walls of noncombustible types of construction.  Pyro-Guard® fire retardant treated plywood was used as roof sheathing over light gauge steel roof trusses providing an easy to nail surface for the 3-dimensional architectural composite shingles.