Month: October 2022

Global Warming and its effect on our planet has become an International issue. We in industry have an opportunity to participate in the reduction of global warming via the application of some of the latest technology to “color” our world in applications such as roofing, sidewalls and other exterior applications. Researchers in pigment technology have developed a new classification of pigments that are not only extremely durable, weather resistant and color-fast, but also possess a new property – “Solar”, or “Infrared” Reflectivity. This article will discuss this new class of pigments, what they are, the history of the technology, and …

Why Cool Metal Roofs are way Cool? A cool metal roof reflects and emits the sun’s energy as light back to the sky instead of allowing it to enter the building below as heat. In many climate zones, a cool metal roof can substantially reduce the cooling load of the building, providing several direct benefits to the building owner and occupants: increased occupant comfort, especially during hot summer months reduced air conditioning use, resulting in energy savings typically of 10-30%1, and decreased roof maintenance costs due to longer roof life. In addition to these well known benefits to the building owner, …

COOL QUESTION How does solar reflectance of metal roofing compares to other roofing material? (Solar reflectance (SR) is the ability of a material to reflect solar energy from its surface back into the atmosphere. The SR value is a number form 0 to 1.0. A value of 0 indicates that the material absorbs all solar energy and a value of 1.0 indicates total solar reflectance) The solar reflectance of metal roofing is a function of the surface of the product. Metal roofing can be offered with pre-painted surfaces, natural or mill finishes, and even granular-coated surfaces. A mill finish such …

Green Building Index  – Solar Reflective Index (SRI) requirements for roof (The Solar Reflective Index is a measure of the constructed surface’s ability to reflect solar heat, as shown by a small temperature rise. It is defined so that a standard black (reflectance 0.05, emittance 0.90) is 0 and a standard white (reflectance 0.80, emittance 0.90) is 100. SRI is calculated according to ASTM E 1980 using values for reflectance and emissivity). Similar to LEED rating program, a metal roof manufactured using PVF2 Series or METALLIC PVF2 Series pre-painted steel can qualify for one point in SM12 Design under Sustainable Site Planning …