Metal roofs have topped barns, buildings and country homes in the United States since the 1700s. But today's metal roof is nothing like the familiar standing-seam tin roof of years ago. Thanks to modern technology, metal roofs are available in all colors and shades, and many styles are virtually indistinguishable from traditional asphalt shingles, cedar or slate.
The market for metal roofing is expected to grow by nearly 25 percent in the next five years, according to the Metal Roofing Alliance, which maintains that metal roofs are appealing to homeowners and builders alike due to their longer lifespan, durability and energy efficiency. In fact, metal roofs can last 50 years or longer, making them a popular alternative to more traditional roof coverings. Metal roofs, however, can be significantly more costly than asphalt shingles or other more traditional roofing materials. With an investment that can be nearly two to three times the cost of traditional roofing materials, it is important to install an effective ventilation system to properly protect and optimize a new metal roof.