Standing seam roof and wall cladding systems has a unique mechanical lock design, this fully interlocking system provides a weather-tight seal that is strong and reliable. Unlike other types of metal panels, standing seam metal roofing does not use rivets or screws that are exposed on the surface of the panels, making standing seam more aesthetically pleasing and easier to maintain. And because standing seam metal roofing can be manufactured at virtually any length, standing seam roofs are ideal for both new construction and existing roof.