Built-Up Roof (BUR)
Built-up roof systems have been steadily used i the United States for years. They are commonly referred to as "tar and gravel" roofs. The roof is built up by alternating layers of asphalt or coal tar-saturated felts or fiberglass mat roofing plies. Built-up roofing can be used in both new construction projects and on existing buildings.
Metal Panel Roof Systems
Metal roofing has been available and utilized as a roofing material for centuries. Metal roofing is available in a wide variety of colors, textures and profiles. With its expected long life, metal roofing is a highly desirable and sustainable building component. Though varied in appearance, metal roofing has many common attributes such as durability, recycled content, fire resistance, low weight and low-lifecycle cost.