Email or call Toll-free in California: 800-772-3300 or Outside California: 916-654-5106 for any 2019 worksheets, Building Energy Efficiency Standards - Title 24, Toll-free in California: 800-772-3300 To standardize Title 24 calculations and to provide a basis for presenting the criteria, the California Energy Commission has established 16 climate zones which are used with both the low-rise residential and the non-residential Title 24 energy standards. 75 in all climate zones. The state of California is divided into 16 different climate zones. Title 24 Energy Standards. California Climate Zone 8 Keywords: California Climate Zone 8, Basic Climate Conditions, Design Day Data, Climatic Design Priorities, Title 24 Requirements, Climate, Bioclimatic Chart, Temperature, Temperature, Relative Humidity, Extra-Terrestrial Radiation, Wind Speed, Prevailing Wind Direction Created Date: 11/9/2015 11:35:29 AM If the three year aged solar reflectance value is not available from the CRRC, then you can input the initial solar reflectance value from the CRRC into the calculation listed below which will assume an aged solar reflectance for the cool roof material. The 2016 Standards took effect January 1, 2017. Established in 1978 to reduce California’s energy consumption, Title 24 Energy Standards set an energy budget for buildings based on their climate zone. The Title 24 prescriptive compliance approach requires a radiant barrier in climate zones with significant cooling loads (zones 2-15). 2×4 @ 16″ OC framing – R15 cavity insulation AND R-8 continuous (in most Climate Zones). Additionally, roofing products used for meeting the Title 24, Part 6 requirements must be rated and labeled by the CRRC (see section 10-113 of Title 24, Part 6). Then, determine the weight of the roofing material. JA3 – Time Dependent Valuation (TDV) There are cool roof products sold in California that are Energy Star Certified but this does not automatically qualify the product as a CRRC certified product. HVAC Prescriptive Threshold for Economizers The economizer requirements for the 2019 BEES … ft.  free ventilation area of attic ventilation for every 150 sq. Outside California: 916-654-5106, California Energy Commission Cool roof standards are designed to reduce air conditioner demand, save money, and reduce the urban heat island effect. 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”. ft.  Then simply move to the right in the table until you see the Cool Roof requirements for your climate zone. Initial solar reflectance value is available from the CRRC (let’s assume an initial solar reflectance value of 0.77). Requiring measures by climate zone ensure that a building will have the most energy efficient features for that area. The California Energy Commission adopted building standards that require solar photovoltaic systems starting in 2020. Alternatively you can search for your zone by county through’s here. Climate Zones 1-5 and 8-16 Wall assemblies must not exceed a maximum U-factor† of 0.051 Climate Zones 6 & 7 Wall assemblies must not exceed a maximum U-factor† of 0.065 Mineral Wool Performance Attic Options Any attic insulation not listed under “Prescriptive” must use Performance options (e.g., unvented attics, or attics Less than 5 lb/sq. Three year aged solar reflectance not available fro the CRRC. Manual describes each climate zone boundaries and list most California cities with its associated climate zone number. Call (888)828-9488 for a free consultation. Wall energy performance criteria in Title 24 require meeting certain R-values and U-factors. Cities may occasionally straddle two climate zones. The USDA plant hardiness map divides North America into 11 hardiness zones. HVAC Sizing Though there are no limits to the actual size of the heating and cooling equipment of your next project, Title 24 does require that you properly calculate the heating and cooling load of your project. In recent years roofing manufacturers have incorporated NIR-reflecting pigments in coatings applied to a variety of nonwhite roofing products, such as metal panels and clay tiles. 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. Building Energy Efficiency Standards - Title 24 2022 Building Energy Efficiency Standards Climate Zone tool, maps, and information supporting the California Energy Code Longitude: 117.38 W . Appendix C. Energy Standards Climate Zones; Appendix D. Demand Responsive Controls; Categories Topic. Each zone has a different energy efficiency requirement. Title 24 Express. Replacing NIR-absorbing (“conventional”) roofing with visually similar, NIR-reflecting (“cool”) roofing can significantly reduce building heat gain. 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. Elevation: 840 ft . (California) Coefficient of Performance, Cooling (COP) Title 24 Requirements California Climate Zone 10 Reference City: Riverside . 2. 3. 1. Products being used to comply with the Building Energy Efficiency Standards (California Code of Regulations, title 24, part 1, chapter 10, and part 6) may not necessarily meet all requirements in Title 24, so advertising should not make broad statements about Title However, each climate Buildings in Climate Zones 10, 11, 13 and 14, R-3 or greater roof deck insulation above a vented attic, or, 5. Title 24 is the section of the California Code of Regulations which sets the Building Standards Code for the State of California. As a rule, lighter weight roofing material (asphalt shingles) have a lower cool roof requirements than heavier roofing products like tile roofing. Cool roofing materials now come in a wide variety of materials and colors. California has 16 climate zones for the purposes of state codes and standards (source: LBNL-Heat Island Group) In California, all new or replacement low-slope roofs are required by the building energy efficiency standards (Title 24) to be cool roofs, as are steep-slope roofs in several California climate zones. The cool roof requirements vary depending on roofing material weight. Building Energy Efficiency Standards - Title 24 Contact. Of 24 climate zones defined in the Sunset Western Garden Book and the 20 zones defined by the United States Department of Agriculture (USDA), California has 20 and 16, respectively. Cool roof requirements are triggered when either 50 percent of the roof area or more than 1,000 sq. Determine your climate zone. Refer to the requirements for each building envelope area, based on your project’s Climate Zone IECC 2015 Requirements by Climate Zone 3. In climate zones, 10, 12, and 13, with 1 sq. DECEMBER 2018 ... that vary by climate zone (of which there are 16 in California) and building ... JA2 – Reference Weather/Climate Data . Latitude: 33.95 N . The files listed at right include climate descriptions, design strategies, and climate data (temperature, relative humidity, degree-day, design-day, extra-terrestrial radiation, wind speed and direction) for the California climate zones as defined by Title 24. We’ve posted a helpful compilation in pdf format of all the relevant Cool Roof Title-24 code references including Table 151-D. First look across the top row to find your correct climate zone for your project location. The California Energy Commission updates the Building Energy Efficiency Standards every three years. Alturas CALIFORNIA BUILDING CLIMATE ZONES South Lake Sacramento Fresno Bakersfield Barstow W E S 50 50 100 Miles SYSTEMS ASSESMENT & FACILITIES SITING DIVISION T:\Projects \CEC\Mexico\MX Border.apr VIEW: CZ Building B&W 8.5X11 LAYOUT:CZ Building B&W 8.5X11 Title 24 Walls: U-factor reduced to 0.048 2×6 @ 16″ OC framing – R21 cavity insulation AND R-5 continuous (in most Climate Zones). There are 16 climate zones in the state. Cool roof requirements for residential and non-residential now apply to low-slope and steep-slope roofs. Documents and training information to help building communities and enforcement agencies comply with the Building Energy Efficiency Standards. Climate zone boundaries have changed . There are exceptions to both residential and non-residential requirements. All roofing products must be certified and labeled according to the Cool Roof Rating Council (CRRC) to comply with the Standards. Climate Zone Assignments by Zip Code Building Energy Efficiency Standards - Title 24 The California Energy Commission updates the standards every three years. Zone 1 is the coldest; zone … The cool roof requirements for re-roofs are the same as for new construction and use the same values from Table 151-D noted above. The Energy Commission established 16 climate zones that represent a geographic area for which an energy budget is established. Compare that to the seven zones the U.S. Department of Energy uses for the entire country. Then go down along the left hand column until you come to “Roofing Products”. The Climate Zone Map, and its implications on the cost-effectiveness of implementation, must be reviewed if a local government wishes to adopt local standards for energy efficiency beyond those set by Title 24 and have those standards approved and made enforceable by the CEC. The performance of the building components, including the roof, must meet the minimum levels of energy efficiency. For climate zones 11 and 12 simply look across the table and then follow each column down the list for the minimum required energy feature. Nonwhite pigments with high near-infrared (NIR) reflectance historically have been used to camouflage military surfaces (by mimicking foliage) and to minimize solar heating of dark exterior architectural surfaces, such as colored vinyl siding and gray battleship hulls. Sacramento, CA 95814. That is your Cool Roof specification for your roofing product. A roof with a high solar reflectance (ability to reflect sunlight) and high thermal emittance (ability to radiate heat) stays cool in the sun, reduces demand for cooling power in conditioned buildings, and increases occupant comfort in unconditioned buildings. Cities and Effective January 1, 2010 the Standards will require that a Cool Roof material meet an aged solar reflectance value (3 year testing) provided by the Cool Roof Rating Council (CRRC):