This Roof System is hands down our most versatile. As part of an Insulated Room, Storm Window Enclosure, Screen Enclosure or even alone on columns or posts, this system consistently provides stength, durability, and value. A roof that has been installed on columns or posts can be returned to years later and an enclosure can easily be added under it. A built-in gutter system provides drainage without being unsightly. If I were to put a permanent awning on my own home (and I did!) this is the system I would use.