What is one primary consideration when selecting a roof deck material?

When selecting a roof deck material, the weight-bearing capacity is a primary consideration because it directly impacts the structural integrity and safety of the building. The roof deck must be able to support not only its own weight but also any additional loads, such as roofing materials, snow accumulation, or equipment that may be installed on the roof. A deck with insufficient weight-bearing capacity could lead to sagging or even collapses, endangering the building's occupants and compromising the overall safety of the structure.

While factors like cost, color, and local availability are important in the selection process, they do not have the same critical implications for the roof's performance and safety as the weight-bearing capacity does. Each roof type and design requires careful analysis of load calculations to ensure that the materials chosen can withstand the expected stress and loads placed upon them.