The architectural type steel roofing system is similar to the traditional steep-sloped roof and is primarily a visual product applied over solid sheathing. It is considered to be a water shedding roof system (hydrokinetic) rather than a water barrier (hydrostatic) roof system. Sheet steel roofing is available in a variety of widths, cross-sections and seam types. The panel is typically roll formed into ribs, offering a variety of different appearances. The ribs also add structural strength to the panel that is necessary for many applications.
Structural Standing Seam Roofing
Structural type steel roof systems may be compared to traditional low slope roof membrane systems because they are designed to carry roof loads, resist moisture infiltration on low-slope applications, and can be installed without a solid sheathing substrate. The term "standing seam" is used to refer to many kinds of roofing panels that have a raised vertical seam, which ensures that the panel seams are above the water level. The longitudinal seams between panels and the seaming techniques vary by application and by manufacturer. The standing seam can also be used as an architectural element to highlight the roof aesthetics and accent the building’s architecture.