Metal is one of the most energy efficient roofing materials available and can save your home up to 40% in energy costs as well as provide excellent insulation during the winter. With a metal roofing system optimized for energy efficiency, you’ll enjoy long-term cost savings on your energy bills while reducing your environmental impact. The secret to metal roofing’s energy savings is in its variety of finishes. The basic, unpainted metal roof will reflect more solar radiation than an asphalt roof, which typically absorbs and holds heat. But, for homes in warmer climates, pre-painted or granular coated metal roofing systems not only reflect solar energy but also cool your home by re-emitting most of what solar radiation is absorbed. Where annual cooling loads dominate, a highly reflective and highly emissive painted or granular-coated metal roof is optimal for reducing energy consumption and can actually re-emit up to 90% of absorbed solar radiation.