Then, determine the weight of the roofing material. The Title-24 prescriptive requirements divide roofs into two categories, Low Slope (less than 2:12 pitch) and Steep Slope (greater than 2:12 pitch). The cool roof requirements vary depending on the climate zone. There are exceptions to both residential and non-residential requirements.įirst, determine which climate zone your project is located in, 1 thru 16. All roofing products must be certified and labeled according to the Cool Roof Rating Council (CRRC)to comply with the Standards. The ages solar reflectance and thermal emittance requirements will vary, depending on the slope of the roof, climate zone, and the density of the roofing product.
Cool roof standards are designed to reduce air conditioner demand, save money, and reduce the urban heat island effect.Ĭool roof requirements for residential and non-residential now apply to low-slope and steep-slope roofs.
#CHILL ZONE CODE#
With the old 2005 Title-24 energy code a residential cool roof was an optional energy efficiency measure, however on January 1, 2010, cool roofs are now required for most residential buildings in many of California’s 16 climate zones. The new Cool Roof requirements affect new construction, significant repairs of existing roofs, re-roofing, plus additions and alterations of existing buildings and homes. As of January 1, 2010, the California Energy Commission’s updated Title-24 Building Energy Efficiency Standards for residential and non-residential roofing are now in force, otherwise know as “Cool-Roof”
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