Steel building, the basics
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. These two factors are conducive to superior air quality in metal buildings, compared with what you would see in most wood structures. A major safety concern of business and home owners is that of a fire. Since metal buildings are not combustible and are fire retardant, they are extremely safe in this aspect.