Steel arch buildings, and more
For one, metal does not get mildew or moldy, unlike wood buildings. Due to the fact that metals can be galvanized, they will not rust. Both of the aforementioned aspects lend themselves to better air quality within metal buildings, superior to what you will find in most wood buildings. Fire hazards are a big safety concern with home and business owners. Since metal buildings are not combustible and are fire retardant, they are extremely safe in this aspect.