Educate yourself on steel aircraft hangars
First of all, metal is less likely to mold or attract mildew like organic building materials. Metals that are galvanized will not rust due to galvanization. Both of the aforementioned aspects lend themselves to better air quality within metal buildings, superior to what you will find in most wood buildings. A major safety concern of business and home owners is that of a fire. Due to the fact that metal is noncombustible and fire retardant, they earn high safety marks in this department.