Standing Seam Roofing system is the most durable and maintenance-free metal roof. It is a hidden fixed roof system that features vertical ribs with a flat space or pan in the middle. The edges of a roof panel are folded or sewed lengthwise along the side roof panel. Roof panels are attached to purlins or secondary members with specially designed clips or clamps. The hidden fix system requires no piercing fasteners and helps provide weather tightness and better resistance to wind uplift. This feature is what gives it its name and makes it stand out from other metal roofs.

Like corrugated metal roofs, standing seam roofs are also designed with metal panels that are fabricated by roll forming. The key difference is in the design and application – standing seam roofs take full advantage of having concealed fasteners. A standing seam system consists of wide, relatively flat metal panels that have vertical legs (or ribs) on each end. The metal panels are designed to lock together, and are mounted to the roof by being fastened to the sheathing underneath through a series of hidden clips. All the roof attachments and seams are literally hidden beneath the vertical legs of the standing seam panels.