Standing seam metal roof panels became very popular because they are joined with hidden fasteners where the joint between one metal panel and the other is not visible, so they look much nicer than regular metal panels. The Standing Seam system is used for a wide range of applications and projects. These systems feature interlocking seams that connect the panels, giving the roof a distinct and attractive appearance. In addition, the vertical seam systems are manufactured from high-end steel or aluminum that offer years of service life with little or no maintenance. International Roofing is certified as an installer of Standing Seam Metal Roofing by McElroy Metal Manufacturing Company, the largest metal roofing manufacturer in the United States.