Standing Seam Metal Roof Solar Reflectance

A cool metal roof with high solar reflectance and high thermal emittance would have a lower surface temperature as compared to a roof with low reflectance and low emittance.

Standing seam metal roof solar reflectance.

Standing seam panels offer sleek lines that create a modern look. Mbci manufactures quality standing seam metal roofing panels that are lightweight and last up to 60 years. In sunny warm weather conditions we ve found that the panels of a crystalline system mounted on a standing seam metal roof further reduce the heat factor by shading the metal roof surface. A standing seam metal roof integrated with solar panels is a powerful combination of durability longevity energy efficiency and most importantly value for the money.

Solar reflectance index sri. Cool metal roofing coated with kynar 500 based resin is one way to limit the urban heat island effect. The main idea to remember for standing seam systems is that the fastener is hidden whether the panel is attached to the roof deck using a clip or is directly fastened to the decking material under the vertical leg using a fastener flange. Colonial seam continuous standing seam metal roof panel with an integral seam.

Kynar 500 based painted metal roofing can achieve solar reflectance of over 70. When a standing seam metal roof is installed by specially trained professionals it will last for many decades and thus can be a permanent platform for a solar roofing system whether it be the old school crystalline pv panels or thin film solar laminates. Double lock seam symmetrical seam one piece snap lock interlock and two piece snap lock interlock. The best part about standing seam is that it s proven to last in pretty much any climate while providing superior durability longevity and energy savings.

Cool roofs use coatings with known radiative properties that are specified in order to keep the roof surface temperature lower than it would have been with uncoated or traditional roofing materials during peak sun times. Sri measures the roof s ability to reject solar heat defined such that a standard black reflectance 0 05 emittance 0 90 is 0 and a standard white reflectance 0 80 emittance 0 90 is 100. Standing seam systems can be used for either metal roofing which is the most common or metal walls. Incorporates both solar reflectance and thermal emissivity in a single value.

Urban heat island a built environment where the large portion of dark absorbing. Reflected solar energy allows the roof surface to remain cooler which means less heat is transferred into the building. In the case of a cool metal roof a lower surface temperature translates into less heat gain into the attic space or living space below the roof.