Metal is one of the most energy efficient roofing materials available and may save you up to 10-40% in energy costs. 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 absorbs and holds heat. For homes in warmer climates, pre-painted or granular coated metal roofing systems reflect solar energy and cool your home by re-emitting most of what solar radiation is absorbed. 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. (NOTE: Reflectance in relation to metal roofing refers to UV and Infrared light rays being reflected from the roof surface. These rays are what impact the heating / cooling of the roof surface.)
The most effective energy-saving finish for metal roofing is commonly referred to as a cool-roof coating. These highly reflective coatings use cool pigments in the paint to increase solar reflectance and lower the surface temperature of the roof. Cool-metal roofing systems help reduce the energy needs of air conditioned buildings and make unconditioned buildings more comfortable.
Solar energy panels can easily be installed on metal roofs, sometimes even with attachment solutions that do not penetrate the roof system. Since the service life of the metal outlasts the service life of the solar energy system, installations can occur even on existing metal roofs. The ease of installation, roof cooling maximization, and long lasting durability of the metal roofing under your solar panels make solar an easy upgrade for your home with countless benefits.
Check out our brochure below for more information on how metal roofing is a natural choice for mounting solar PV.
DOWNLOAD PDFA cool roof is a roof that reflects more solar energy away from its surface and more efficiently radiates absorbed heat away from the building than other roofs.
Download the informational PDF from the Cool Roof Rating Council and learn about the benefits of a cool roof.
DOWNLOAD PDFRising temperatures threaten our communities. High heat negatively affects our health and well-being, productivity, energy use, school performance, and more. These challenges are more frequently borne by low-income communities and communities of color.
Download the informational PDF from the Cool Roof Rating Council and learn more about urban heat islands and ways to reduce them.
DOWNLOAD PDFThere are many factors to consider when calculating the solar reflective index of a roof.
Download the Solar Reflectance illustrative PDF below to learn more about how a roof’s cooling abilities are calculated.
DOWNLOAD PDF
