WebPerformance criteria for doors are based on the amount of glass they have (called glazing level) and ratings certified by the National Fenestration Rating Council (NFRC). Enlarge image (PDF, 1.06 MB) Common Product Features. Many ENERGY STAR certified windows, doors and skylights have some or all of the product features detailed below. ... WebThe SHGC rating is measured between 0 and 1, with lower SHGC ratings meaning the glass allows less solar heat from entering the home. The SHGC and U-ratings share an interesting relationship in that they share a relative correlation. Windows with higher SHGC ratings will have higher U-ratings as well, meaning people whom a looking to enjoy some ...
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Web11 Mar 2024 · March 11, 2024 The building code provides requirements for energy performance of window and other fenestration assemblies, including the maximum allowable fenestration U-factors. It can be challenging for designers to meet the U-factor requirements, when working on new and existing buildings. WebThe Solar Heat Gain Coefficient, SHGC, measures how well a window blocks heat from the sun. Therefore, the lower the SHGC, the lower the amount of heat gain. A window with a … Web14 Feb 2016 · Performance requirements. The updated code, the Florida Building Code Fifth Edition, will increase the stringency of the state’s energyefficiency requirements by about 10 percent, says Dennis Stroer, owner of Calcs-Plus, a provider of energy-code calculations based in North Venice, Florida. “Glass and windows are affected by the new code. chick fil a nrh