Standing Seam Metal Roofing

Standing seam metal roofing is a roofing system made of vertical metal panels joined by raised interlocking seams that run from the roof's ridge to its eave, concealing the fasteners beneath the seam and leaving no exposed screw heads for water to penetrate, unlike simpler exposed-fastener corrugated metal roofing. Developed through the nineteenth and twentieth centuries as sheet metal roofing techniques matured, commonly using steel, aluminum, copper or zinc, it became popular for its long service life, often exceeding fifty years, its ability to shed snow and water efficiently even at low roof pitches, and the clean, linear appearance of its raised seams, which has made it as common on contemporary architectural facades as on functional agricultural and industrial buildings.