Fenestration labeling: temporary label, label certificate, and permanent label rules

Grounded in the retrieved California Energy Code — click a citation to read the verbatim passage:

• § 110.6 High relevance — show source text

  Exception 2 to Section 110.6(a)4: If the fenestration product is an alteration consisting of any area; replacement of glass in a skylight product in a building covered by the nonresidential standards, the default VT may be calculated as set forth in Reference Nonresidential Appendix NA6. 5. Labeling. Fenestration products and exterior doors shall: A. Have a temporary label for manufactured fenestration products and exterior doors or a label certificate when the component modeling approach (CMA) is used and for site-built fenestration meeting the requirements of Section 10-111(a)1. The temporary label shall not be removed before inspection by the enforcement agency; and B. Have a permanent label or label certificate when the component modeling approach (CMA) is used and for sitebuilt fenestration meeting the requirements of Section 10-111(a)2 if the product is rated using NFRC procedures. 6. Fenestration acceptance requirements. Before an occupancy permit is granted site-built fenestration products in other than single-family buildings shall be certified as meeting the Acceptance Requirements for Code Compliance, as specified in the Reference Nonresidential Appendix NA7 to ensure that site-built fenestration meets Standards requirements, including a matching label certificate for product(s) installed and be readily accessible at the project location. A certificate of accep

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  ALL OCCUPANCIES—MANDATORY REQUIREMENTS FOR THE MANUFACTURE, CONSTRUCTION AND INSTALLATION OF SYSTEMS, EQUIPMENT AND BUILDING COMPONENTS

  tance certifying that the fenestration product meets the acceptance requirements shall be completed, signed and submitted to the enforcement agency. Exception to Section 110.6(a): Fenestration products removed and reinstalled as part of a building alteration or addition.

  (b) Installation of field-fabricated fenestration and exterior doors. Field-fabricated fenestration and field-fabricated exterior doors may be installed only if the compliance documentation has demonstrated compliance for the installation using U factors from Table 110.6-A and SHGC values from Table 110.6-B. Field-fabricated fenestration and field-fabricated exterior doors shall be caulked between the fenestration products or exterior door and the building, and shall be weatherstripped.

  Exception to Section 110.6(b): Unframed glass doors and fire doors need not be weatherstripped or caulked.

  TABLE 110.6-A—DEFAULT FENESTRATION PRODUCT U-FACTORS	Col2	Col3	Col4	Col5
  FRAME1,2	PRODUCT TYPE	SINGLE PANE3, 4 U-FACTOR	DOUBLE PANE1, 3, 4 U-FACTOR	GLASS BLOCK2, 3 U-FACTOR
  Metal	Operable	1.28	0.79	0.87
  Metal	Fixed	1.19	0.71	0.72
  Metal	Greenhouse/garden window	2.26	1.40	NA
  Metal	Glazed doors	1.25	0.77	NA
  Metal	Skylight	1.98	1.3	NA
  Metal, thermal break	Operable	NA	0.66	NA
  Metal,

• § 205.1.1.4 High relevance — show source text

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

  A6.205.1.1.4 Labeling. Fenestration products shall:

  1. Have a temporary label (or label certificate for site- built fenestration) meeting the requirements of Section 10111(a)1 of Title 24, Part 1 not to be removed before inspection by the enforcement agency, listing the certified U factor and SHGC and certifying that the air leakage requirements of Section A6.205.1.1.1 are met for each product line; and
  2. Have a permanent label (or label certificate for site-built fenestration) meeting the requirements of Section 10111(a)2 of Title 24, Part 1 if the product is rated using NFRC procedures.

  A6.205.1.1.5 Fenestration acceptance requirements. Before an occupancy permit is granted, site-built fenestration products in other than low-rise residential buildings shall be certified as meeting the Acceptance Requirements for Code Compliance, as specified by the Reference Nonresidential Appendix NA7 of the California Energy Commission 2008 Building Energy Efficiency Standards for Residential and Nonresidential Buildings to ensure that site-built fenestration meet Standards requirements, including a matching label certificate for each product installed and be readily accessible at the project location. A Certificate of Acceptance shall be submitted to the enforcement agency that certifies that the fenestration product meets the acceptance requirements.

  Exception: Fenestration products removed and reinstalled as part of a building alteration or addition.

  A6.205.1.2 Installation of field-fabricated fenestration and exterior doors. Field-fabricated fenestration and field-fabricated exterior doors may be installed only if the compliance documentation has demonstrated compliance for the installation using U factors from Table A6.205.1-A and SHGC values from Table A6.205.1-B. Field-fabricated fenestration and field-fabricated exterior doors shall be caulked between the fenestration products or exterior door and the building and shall be weatherstripped.

  Exception: Unframed glass doors and fire doors need not be weatherstripped or caulked.

  A6.205.2 Joints and other openings. Joints and other openings in the building envelope that are potential sources of air leakage shall be caulked, gasketed, weatherstripped or otherwise sealed to limit infiltration and exfiltration.

  A6.205.3 Insulation and roofing products.

  A6.205.3.1 Certification by manufacturers. Any insulation shall be certified by Department of Consumer Affairs, Bureau of Household Good and Services that the insulation conductive thermal performance is approved pursuant to the California Code of Regulations, Title 24, Part 12, Chapters 12-13, Article 3,“Standards for Insulating Material.”

  A6.205.3.2 Installation of urea formaldehyde foam insulation. Urea formaldehyde foam insulation may be applied or installed only if:

  1. It is installed in exterior side walls; and

  2. A four-mil-thick plastic polyethylene vapor barrier or equivalent plastic sheathing vapor barrier is installed between the urea formaldehyde foam insulation and the interior space in all applications.

• § 110.6 High relevance — show source text

  Exception 1 to Section 110.6(a)2: If the fenestration product is a skylight in a building covered by the nonresidential standards with less than 200 square feet of skylight area, the default U -factor may be calculated as set forth in Reference Nonresidential Appendix NA6.

  Exception 2 to Section 110.6(a)2: If the fenestration product is an alteration consisting of any area replacement of glass in a skylight product in a building covered by the nonresidential standards, the default U -factor may be calculated as set forth in Reference Nonresidential Appendix NA6. 3. Solar heat gain coefficient SHGC. The fenestration product’s SHGC shall be rated in accordance with NFRC 200, or use the applicable default SHGC set forth in Table 110.6-B.

  Exception 1 to Section 110.6(a)3: If the fenestration product is a skylight in a building covered by the nonresidential standards with less than 200 square feet of skylight area, the default SHGC may be calculated as set forth in Reference Nonresidential Appendix NA6.

  Exception 2 to Section 110.6(a)3: If the fenestration product is an alteration consisting of any area replacement of glass in a skylight product in a building covered by the nonresidential standards, the default SHGC may be calculated as set forth in Reference Nonresidential Appendix NA6. 4. Visible transmittance (VT). The fenestration product’s VT shall be rated in accordance with NFRC 200 or ASTM E972. For tubular daylighting devices VT shall be rated using NFRC 203.

  Exception 1 to Section 110.6(a)4: If the fenestration product is a skylight in a building covered by the nonresidential standards with less than 200 square feet of skylight area, the default VT may be calculated as set forth in Reference Nonresidential Appendix NA6.

  Exception 2 to Section 110.6(a)4: If the fenestration product is an alteration consisting of any area; replacement of glass in a skylight product in a building covered by the nonresidential standards, the default VT may be calculated as set forth in Reference Nonresidential Appendix NA6. 5. Labeling. Fenestration products and exterior doors shall: A. Have a temporary label for manufactured fenestration products and exterior doors or a label certificate when the component modeling approach (CMA) is used and for site-built fenestration meeting the requirements of Section 10-111(a)1. The temporary label shall not be removed before inspection by the enforcement agency; and B. Have a permanent label or label certificate when the component modeling approach (CMA) is used and for sitebuilt fenestration meeting the requirements of Section 10-111(a)2 if the product is rated using NFRC procedures. 6. Fenestration acceptance requirements. Before an occupancy permit is granted site-built fenestration products in other than single-family buildings shall be certified as meeting the Acceptance Requirements for Code Compliance, as specified in the Reference Nonresidential Appendix NA7 to ensure that site-built fenestration meets Standards requirements, including a matching label certificate for product(s) installed and be readily accessible at the project location. A certificate of accep

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• § 0.69 High relevance — show source text

  A.| |Metal, thermal break|Fixed|Clear|N.A.|0.69|N.A.| |Metal, thermal break|Operable|Tinted|N.A.|0.53|N.A.| |Metal, thermal break|Fixed|Tinted|N.A.|0.57|N.A.| |Nonmetal|Operable|Clear|0.74|0.65|0.70| |Nonmetal|Fixed|Clear|0.76|0.67|0.67| |Nonmetal|Operable|Tinted|0.60|0.53|N.A.| |Nonmetal|Fixed|Tinted|0.63|0.55|N.A.| |N.A. = Not applicable.
  1. Translucent or transparent panels shall use glass block values.|N.A. = Not applicable.
  1. Translucent or transparent panels shall use glass block values.|N.A. = Not applicable.
  1. Translucent or transparent panels shall use glass block values.|N.A. = Not applicable.
  1. Translucent or transparent panels shall use glass block values.|N.A. = Not applicable.
  1. Translucent or transparent panels shall use glass block values.|N.A. = Not applicable.
  1. Translucent or transparent panels shall use glass block values.|

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A6.1-5

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  APPENDIX A6.1 — VOLUNTARY STANDARDS FOR HEALTH FACILITIES [OSHPD 1, 2 & 4]

  A6.205.1.1.4 Labeling. Fenestration products shall:

  1. Have a temporary label (or label certificate for site- built fenestration) meeting the requirements of Section 10111(a)1 of Title 24, Part 1 not to be removed before inspection by the enforcement agency, listing the certified U factor and SHGC and certifying that the air leakage requirements of Section A6.205.1.1.1 are met for each product line; and
  2. Have a permanent label (or label certificate for site-built fenestration) meeting the requirements of Section 10111(a)2 of Title 24, Part 1 if the product is rated using NFRC procedures.

  A6.205.1.1.5 Fenestration acceptance requirements. Before an occupancy permit is granted, site-built fenestration products in other than low-rise residential buildings shall be certified as meeting the Acceptance Requirements for Code Compliance, as specified by the Reference Nonresidential Appendix NA7 of the California Energy Commission 2008 Building Energy Efficiency Standards for Residential and Nonresidential Buildings to ensure that site-built fenestration meet Standards requirements, including a matching label certificate for each product installed and be readily accessible at the project location. A Certificate of Acceptance shall be submitted to the enforcement agency that certifies that the fenestration product meets the acceptance requirements.

  Exception: Fenestration products removed and reinstalled as part of a building alteration or addition.

• § 110.3 High relevance — show source text

  K

  kBtu/Hour 110.3(c)6, 150.0(n)4, 160.4(d) Kelvin 140.6(a)4B, 170.2(e)2D Kitchen Exhaust system 140.9(b) Local mechanical exhaust 150.0(o)2B, 150.2(b)1M, 160.2(b)2B, 180.2(b)5B Range hood 150.0(k)1A, 150.0(o)1G, 160.2(b)2A Range Hood Airflow Rates (CFM) and ASTM E3087 Capture Efficiency (CE) Ratings According to Dwelling

  Unit Floor Area and Kitchen Range Fuel Type Table 150.0-G, Table 160.2-G

  L

  Label Certificate 10-111(a-b), 10-111(d)11, 110.6(a)5B, 110.6(a)6 Labeling 10-111, 10-113, 100.0(g), 110.6(a)5, 150.0(m)12E, 150.0(m)13A, 150.0(m)6, 160.2(b)1E, 160.5(b)5F, 160.3(b)5L Laboratory 10-103.1(c)3B, 10-103.2(c)3B, Table 120.1-C, 120.4(b)1A, Table 140.4-B, 140.4(q), Table 140.6-C, 140.9(c), Table 140.9-D, 141.1(a), 150.0(m)2A, 160.3(b)5B, 160.3(c)2C, Table 170.2-C, 170.2(c)4O Landscaping 110.8(g)2A Large Enclosed Space 140.3(c), 170.2(b) Leakage Rate 120.4(g), 140.3(a)9C, 140.4(e)2D, 141.0(b)2D, 141.0(b)2Q, 150.0(m)11, 150.0(o)1C, 150.1(b)3, 160.3(b)5K, 160.3(c)2H, 170.1(d)2H, 170.2(c)4C, 180.2(b)2B Leakage Testing 120.4(g)2, 141.0(b)2D, 150.0(m)11, 160.3(b)5K, 160.3(c)2H Leaving Air temperature Table 140.4-A Chilled water temperature 110.2(a) Condenser temperature 110.2(a) Evaporator temperature 110.2(a) Fluid temperature Table 110.2-D, 140.4(h) Gas temperature 120.6(a)8, 120.6(b)5 Heating water temperature Table 110.2-N Library Building Spaces 140.4(a)2E-G Light Mass Wall 120.7(b)3, Table 140.3-C, 160.1(b)4 Lighting 10-103.1, 10-114, 100.0(a-f), Table 100.0-A, 110.

• § 140.4 High relevance — show source text

  3(d) Flow 140.4(o), 140.9(b), 170.2(c)4M Plenum 150.0(m), 160.3(b)G-L Supply-only fan 140.4(c)1 Supply-only ventilation 160.2(b)1, 160.2(c)1 Temperature 140.4(k)7, 170.2(c) Water temperature reset controls 120.5(a)9, 160.3(d) Suspended Ceiling 120.7(a)3 Switched Outlets 150.0(k)2, 160.5(a)2 Switches 110.4(b), 110.9(b)6, 130.1(c), 130.5(d), 150.0(p), 160.2(b), 160.5(b), 160.6(d) System Capacity Table 140.4(e), 140.9(c)3, 140.10(b), 150.1(c)8, 150.2(a), Table 170.2-E, 170.2(h), 180.1 Design 10-103, 150.0(m)12, 160.2(a), 160.2(b) Efficacy 130.1(c)7 Efficiency 120.6(a)8, 120.6(b)5F, 140.4(k)7, 140.5(c), 170.2(d)3 Piping 120.3(a), 120.6(e), 150.0(j), 150.0(p) Pressure 120.6(e) Systems Expectations 120.8(b) Systems Manual 120.8(h) Systems Operations Training 120.8(h)

  T

  Temperature 110.3(c)3, 120.2(k), 120.3(c) Controls 110.3(a)1, 110.3(c)1 Reset 10-103.1(c), 120.5(a), 120.6(a)4 Reset controls 140.4(f), 140.4(k)4, 160.3(d) Rise 150.2(h), 160.3(b)4 Sensor 120.2(i), 160.3(a) Setpoint 110.2(c), 120.2(c), 120.2(e), 120.6(a), 120.6(b), 140.4(d), 140.4(n), 160.3(a), 170.2(c)4L, 170.2(d) Temporarily Operate 120.2(e), 160.3(a)2 Temporary Exhibit 140.6(a)3D, E, F Temporary Label 10-111(a), 10-111(b), 110.6(a)5 Tenant Space 10-103(b), 140.6(c)1, 140.6(c)2, 141.0(b)2I, Table 140.10-A, 141.0(b), Table 170.2-U, Table 170.2-V, 180.2(b)4 Terminal Unit 10-113.1(c), Table 120.2A,120.5(a), 140.4(c)3, 140.4(p), 160.3(d), Table 160.3-C, Table 170.2-B, 170.2(c) Test Condition 110.2(a)

  Test Method 110.2(a), 110.3(b), 110.8(g),

• § 110.10 High relevance — show source text

  Inverter 110.10(c) Irrigation System 110.10(b)1A, 110.10(b)1B Isolation Area device 120.2(g), 160.3(a)2F Controls 10-103.1(c)3B, 120.5(a)8, 160.3(d)1H Equipment 150.0(s)4 Valve 110.3(c)4C-D, 110.3(c)6

  J

  Joint Appendix JA2 140.4(b)3A, 150.0(h)2, 150.1(a), 160.3(b)2B, 170.0(a), 170.2(c)2 JA4 110.8(h), Table 150.1-A, Table

  170.2-A JA5 110.12(a)5 JA6 120.2(i)8, 150.1(c)7A, 150.2(b)1F, 160.3(a)2H, 170.2(c)3B, 180.2(b)2A JA8 150.0(k)1B, 150.0(k)1D, Table 150.0-A, 150.2(b)1K, 160.5(a)1B, 160.5(a)1D, Table 160.5-A, 180.2(b)4A JA9 110.2(f) JA11 140.10(a), 150.1(c)14, 170.2(f), 170.2(g) JA12 140.10(b), 150.1(c)14, 170.2(f), 170.2(h) Joints 110.7, 120.3(b)2, 120.4(b)1D, 120.4(b)2D, 140.3(a)9B, 150.0(m)2D, 150.09(m)3D, 160.3(b)5B, 160.3(b)5C, 160.3(c)1C, 160.3(c)2C, 160.4(f)2B

  K

  kBtu/Hour 110.3(c)6, 150.0(n)4, 160.4(d) Kelvin 140.6(a)4B, 170.2(e)2D Kitchen Exhaust system 140.9(b) Local mechanical exhaust 150.0(o)2B, 150.2(b)1M, 160.2(b)2B, 180.2(b)5B Range hood 150.0(k)1A, 150.0(o)1G, 160.2(b)2A Range Hood Airflow Rates (CFM) and ASTM E3087 Capture Efficiency (CE) Ratings According to Dwelling

  Unit Floor Area and Kitchen Range Fuel Type Table 150.0-G, Table 160.2-G

  L

  Label Certificate 10-111(a-b), 10-111(d)11, 110.6(a)5B, 110.6(a)6 Labeling 10-111, 10-113, 100.0(g), 110.6(a)5, 150.0(m)12E, 150.0(m)13A, 150.0(m)6, 160.2(b)1E, 160.5(b)5F, 160.

• § 170.1 Medium relevance — show source text

  170.1(a), 170.1(b), 170.2(c), Table 170.2-S, 180.2(b) Signs 120.6(h), 130.3(a)2, 140.6(a), 140.7(a), Table 140.7-B, 140.8(a), 141.0(b), 150.0(k), 150.1(b), 150.1(c), 160.5(d), 170.2(e), 180.2(b), 180.2(c) Temperature 110.2(a), 110.2(b), 110.2(c), 110.2(f), Table 110.2-F, Table 110.2-N, 110.2(f), 110.3(a), 110.3(a), 110.3(c), 110.8(d), 110.12(b), 120.2(a), 120.2(b), 120.2(c), 120.2(e), 120.2(i), 120.2(k), 120.3(a), 120.3(c), Table 120.3-A, 120.4(c), 120.5(a), 120.6(a), Table 120.6-B, Table 120.6-C, 120.6(b), Table 120.6-D, Table 120.6-E,

  Manufacturing, Commercial & Industrial Work Area Table 140.6-C Manufacturing, Commercial & Industrial Work Area-High Bay Table 140.6-C Manufacturing, Commercial & Industrial Work Area-Low Bay Table 140.6-C Museum Area 140.3(c), Table 140.6-C Museum Area-Exhibition/Display Table 140.6-C

  Museum Area-Restoration Room

  Table 140.6-C Office Area 130.1(c)5, 130.5(d), 140.4(a), 140.6(a), Table 140.6-C, 160.6(d), 170.2-E, Table 170.2-M, Parking Garage Area 130.1(c)7, 130.1(d), 140.6(a)3P, Q, R, 140.6(c)1, 140.6(d), 140.7(a), 140.7(c), 160.2(d), Table 140.6-C, Table 170.2-M Parking Garage Area-Daylight Adaptation Zone Table 140.6-C Parking Garage Area-Parking Zone and Ramps Table 140.6-C Pharmacy Area Table 140.6-C Religious Worship Area Table 140.6-C Restrooms 130.1(b), 130.1(c)5, 140.9(c)1, Table 140.6-C Retail Sales Area 120.2(e), 120.6(b), 140.4(a), 140.6(c)1, 140.6(d), Table 140.6-C Retail Sales Area-Fitting Room Table 140.6-C Retail Sales Area-Grocery Sales Table 140.6-C

  Retail Sales Area-Retail Merchandise

• § 140.3 Medium relevance — show source text

  I. Shall be shown on the plans with the dimensions for the slat projection and slat spacing as specified in Equation 140.3-C. J. Shall have a conspicuous factory installed label permanently affixed and prominently located on an attachment point of the device to the building envelope, stating the following: “NOTICE: Removal of this device will require re-submittal of compliance documentation to the enforcement agency responsible for compliance with California Title 24, Part 6”. 3. Interior and Exterior Light Shelves. To qualify for a PAF, light shelves shall meet the following requirements: A. Where there is vertical fenestration area below the light shelf, both interior and exterior light shelves shall be installed. B. Shall be installed adjacent to clerestory fenestration on south-facing facades with Window Wall Ratios greater than 30 percent. The head height of the light shelves shall be no more than one foot below the finished ceiling. The clerestory fenestration shall meet the requirements of Section 140.3(d)1. C. Exterior light shelves shall be level or sloped downwards from fenestration. Interior light shelves shall be level or sloped upwards from fenestration.

  2025 CALIFORNIA ENERGY CODE 113

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  NONRESIDENTIAL AND HOTEL/MOTEL OCCUPANCIES—PERFORMANCE AND PRESCRIPTIVE

  COMPLIANCE APPROACHES FOR ACHIEVING ENERGY EFFICIENCY

  D. Shall have a projection factor of the applicable value as specified in Table 140.3-E. The light shelf projection factor is calculated using Equation 140.3-C.

  TABLE 140.3-E—DAYLIGHTING DEVICES	Col2	Col3
  DAYLIGHTING DEVICE	ORIENTATION OF THE VERTICAL FENESTRATION	PROJECTION FACTOR
  Horizontal Slats	East or West	2.0 to 3.0
  Interior Light Shelf	South	1.0 to 2.0
  Exterior Light Shelf	South	0.25 to 1.25

  E. Shall have a minimum Distance Factor of 0.3. The distance factor is calculated using Equation 140.3-C. Exception to Section 140.3(d)3E: Where it is documented that existing adjacent structures or natural objects within view of the vertical fenestration block direct sunlight onto the vertical fenestration between 8 a.m. and 5 p.m. for less than 750 daytime hours per year. F. Shall have a top surface with a minimum Visible Reflectance of 0.50 when tested as specified in ASTM E903. Exception to Section 140.3(d)3F : Where an exterior light shelf is installed greater than two feet below the clerestory sill.

  G. Shall extend beyond each side of the window jamb by a distance equal to or greater than their horizontal projection. H. Shall be shown on the plans with the dimensions for the light shelf projection and light shelf spacing as specified in Equation 140.3-C.

  EQUATION 140.3-C—PROJECTION AND DISTANCE FACTOR CALCULATION

  Projection Factor = Projection/Spacing

  Distance Factor = D /( H AS × Projection Factor)

  where:

  Projection = The horizontal distance between the base edge and the projected edge of the overhang, slat or light shelf.

  Spacing = For overhangs, the vertical distance between the projected edge of the overhang and sill of the vertical fenestration below it.

• § 10-111 Medium relevance — show source text

  HORIZONTAL SLATS, when referring to a daylighting device, is a set of adjacent surfaces located directly adjacent to vertical fenestration, oriented horizontally and projecting horizontally from its interior or exterior vertical surface.

  INTEGRATED SHADING SYSTEM is a class of fenestration products including an active layer: e.g., shades, louvers, blinds or other materials permanently integrated between two or more glazing layers. The U -factor and/or SHGC and VT of the insulating glass assembly can be altered by reversibly changing the enclosed active layer.

  LIGHT SHELF is an adjacent, opaque surfaced daylighting device located at the sill of clerestory glazing, oriented horizontally and projecting horizontally from an interior or exterior vertical surface.

  MANUFACTURED or KNOCKED DOWN PRODUCT is a fenestration product constructed of materials that are factory cut or otherwise factory formed with the specific intention of being used to fabricate a fenestration product. Knocked down or partially assembled products may be sold as a fenestration product when provided with temporary and permanent labels as described in Section 10-111, or as a site-built fenestration product when not provided with temporary and permanent labels as described in Section 10-111.

  NFRC 100 is the National Fenestration Rating Council document titled “Procedure for Determining Fenestration Product U factors,” (2020) (ANSI/NFRC 100-2020).

  NFRC 200 is the National Fenestration Rating Council document titled “Procedure for Determining Fenestration Product Solar Heat Gain Coefficients and Visible Transmittance at Normal Incidence,” (2020) (ANSI/NFRC 200-2020).

  NFRC 202 is the National Fenestration Rating Council document titled “Procedures for Determining Translucent Fenestration Product Visible Transmittance at Normal Incidence,” (2020) (ANSI/NFRC 202-2020).

  NFRC 203 is the National Fenestration Rating Council document titled “Procedure for Determining Visible Transmittance of Tubular Daylighting Devices,” (2020) (ANSI/NFRC 203-2020).

  16 2025 CALIFORNIA ENERGY CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  ALL OCCUPANCIES—GENERAL PROVISIONS

  NFRC 400 is the National Fenestration Rating Council document titled “Procedure for Determining Fenestration Product Air Leakage,” (2020) (ANSI/NFRC 400-2020).

  OPERABLE SHADING DEVICE is a device at the interior or exterior of a building or integral with a fenestration product, which is capable of being operated, either manually or automatically, to adjust the amount of solar radiation admitted to the interior of the building.

  RELATIVE SOLAR HEAT GAIN COEFFICIENT (RSHGC) is the ratio of solar heat gain through a fenestration product (corrected for external shading) to the incident solar radiation. Solar heat gain includes directly transmitted solar heat and absorbed solar radiation, which is then reradiated, conducted or convected into the space.

  SITE-BUILT is fenestration designed to be field-glazed or field assembled units using specific factory cut or otherwise factory formed framing and glazing units that are manufactured with the intention of being assembled at the construction site. These include storefront systems, curtain walls and atrium roof systems.

  SKYLIGHT ROOF RATIO (SRR) is the ratio of the skylight area to the gross exterior roof area.

• § 140.3 Medium relevance — show source text

  2. Interior and exterior horizontal slats. To qualify for a PAF, horizontal slats shall meet the following requirements: A. Shall be installed adjacent to vertical fenestration on east- or west-facing facades with Window Wall Ratios between 20 and 30 percent. B. Exterior horizontal slats shall be level or sloped downwards from fenestration. Interior horizontal slats shall be level or sloped upwards from fenestration. C. Shall have a projection factor as specified in Table 140.3-E. The projection factor is calculated using Equation 140.3-C. D. Shall have a minimum distance factor of 0.3. The distance factor is calculated using Equation 140.3-C. Exception to Section 140.3(d)2D: Where it is documented that existing adjacent structures or natural objects within view of the vertical fenestration block direct sunlight onto the vertical fenestration between 8 a.m. and 5 p.m. for less than 500 daytime hours per year. E. Shall have a minimum Visible Reflectance of 0.50 when tested as specified in ASTM E903. F. Shall be opaque. Exception to Section 140.3(d)2F: Horizontal slats with a Visible Transmittance of 0.03 or less when tested as specified in ASTM E1175.

  G. Shall be permanently mounted and not adjustable. H. Shall extend the entire height of the vertical fenestration and beyond each side of the window jamb by a distance equal to or greater than their horizontal projection. Exception to Section 140.3(d)2H: Where the slats are located entirely within the vertical fenestration’s rough opening or a fin is located at the window jambs and extends vertically the entire height of the window jamb and extends horizontally the entire depth of the projection. I. Shall be shown on the plans with the dimensions for the slat projection and slat spacing as specified in Equation 140.3-C. J. Shall have a conspicuous factory installed label permanently affixed and prominently located on an attachment point of the device to the building envelope, stating the following: “NOTICE: Removal of this device will require re-submittal of compliance documentation to the enforcement agency responsible for compliance with California Title 24, Part 6”. 3. Interior and Exterior Light Shelves. To qualify for a PAF, light shelves shall meet the following requirements: A. Where there is vertical fenestration area below the light shelf, both interior and exterior light shelves shall be installed. B. Shall be installed adjacent to clerestory fenestration on south-facing facades with Window Wall Ratios greater than 30 percent. The head height of the light shelves shall be no more than one foot below the finished ceiling. The clerestory fenestration shall meet the requirements of Section 140.3(d)1. C. Exterior light shelves shall be level or sloped downwards from fenestration. Interior light shelves shall be level or sloped upwards from fenestration.

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  D. Shall have a projection factor of the applicable value as specified in Table 140.3-E. The light shelf projection factor is calculated using Equation 140.3-C.

• § 3.1 Medium relevance — show source text

  Design wind loads for exterior glazing not part of a labeled assembly shall be permitted to be determined in accordance with Chapter 24 of the California Building Code .

  R609.3 Testing and labeling. ANSI WMA 100Exterior windows and sliding doors shall be tested by an approved independent laboratory, and bear a label identifying manufacturer, performance characteristics and approved inspection agency to indicate compliance with AAMA/WDMA/CSA 101/I.S.2/A440. Exterior side-hinged doors shall be tested and labeled as conforming to AAMA/WDMA/CSA 101/I.S.2/A440 or ANSI WMA 100, or comply with Section R609.5.

  Exception: Decorative glazed openings.

  R609.3.1 Comparative analysis. Structural wind load design pressures for window and door units different than the size tested in accordance with Section R609.3 shall be permitted to be different than the design value of the tested unit where determined in accordance with one of the following comparative analysis methods:

  1. Structural wind load design pressures for window and door units smaller than the size tested in accordance with Section R609.3 shall be permitted to be higher than the design value of the tested unit provided such higher pressures are determined by accepted engineering analysis. Components of the smaller unit shall be the same as those of the tested unit. Where such calculated design pressures are used, they shall be validated by an additional test of the window or door unit having the highest allowable design pressure.

  2. In accordance with WDMA I.S.11.

  R609.4 Garage doors. Garage doors shall be tested in accordance with either ASTM E330 or ANSI/DASMA 108, and shall meet the pass/fail criteria of ANSI/DASMA 108.

  R609.4.1 Garage door labeling. Garage doors shall be labeled with a permanent label provided by the garage door manufacturer. The label shall identify the garage door manufacturer, the garage door model/series number, the positive and negative design wind pressure rating, the installation instruction drawing reference number, and the applicable test standard. Garage doors shall be installed in accordance with the manufacturer’s installation instructions.

  R609.5 Other exterior window and door assemblies. Exterior windows and door assemblies not included within the scope of Section R609.3 or R609.4 shall be tested in accordance with ASTM E330. Glass in assemblies covered by this section shall comply with Section R324.5.

  R609.6 Windborne debris protection. Protection of exterior windows, glass doors and doors with glass in buildings located in windborne debris regions shall be in accordance with Section R301.2.1.2.

  R609.6.1 Fenestration testing and labeling. Fenestration shall be tested by an approved independent laboratory, listed by an approved entity, and bear a label identifying the manufacturer, performance characteristics and an approved inspection agency to indicate compliance with the requirements of the following specification(s):

  1. ASTM E1886 and ASTM E1996; or

  2. AAMA 506.

  R609.6.2 Impact protective systems testing and labeling. Impact protective systems shall be tested for impact resistance by an approved independent laboratory for compliance with ASTM E1886 and ASTM E1996. Impact protective systems shall be tested

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• § 120.1 Medium relevance — show source text

  F

  Factory Calibrated 120.1(d)4F, 120.5(a)4, 120.6(c)7B, 140.9(c)3C, 140.9(c)3D, 160.2(c)5D, 160.3(d)1D Factory-built fireplace 150.0(e), 160.1(f) Factory-fabricated duct system 120.4(b)1, 150.0(m)2, 160.3(b)5B, 160.3(c)2C Factory-installed label 110.9(c)2, 130.0(c)1, 140.3(d)2J, 160.5(b)1A Fan 120.10(a), 150.0(m) Airflow 120.6(c)1, 140.4(m), Table 140.4-J, Table 140.4-K, Table 150.5-H, 150.1(c)12B, Table 160.2-H, 170.2(c)4K, 170.2(c)4O, Table 170.2-I, Table 170.2-J Array 120.10(a), 140.4(c)1, 170.2(c)4A Capacity 140.4(c)2, 170.2(c)4A Control 120.6(j)3, 140.4(m), 170.2(c)4K Control systems Table 140.4-I Efficacy 150.0(m)12D, 150.0(m)13, 150.0(o)2C, 150.1(b)3B, 150.1(c)10, 160.2(b)1D, 160.2(b)2A, 160.2(b)2B,160.3(b)5L, 170.1(d)2F, 170.1(d)3B, Table 170.2-K Energy index (FEI) 120.10(a) Fan-coil motor 140.4(c)3

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  INDEX

  Vertical fenestration 140.3(d)2, 140.3(d)3, Table 140.3-E, Equation 140.3-C, Table 140.6-A, 141.0(b)2A, Table 141.0-A, 150.2(b)1A, 150.2(b)1B, 150.3(a)5D, 170.2(a)3A, Equation 170.2-A, Table 170.2-L, 180.2(b)1C Vertical glazing 130.1(d)5, 140.3(a)5C, 160.5(b)4D, 170.2(a)3A Vertical window 140.3(a)3, 140.3(a)5, 170.2(a)2B, 170.2(a)3A Visible reflectance 140.3(d)2E, 140.3(d)3F Visible Transmittance (VT) 10-111, 110.6(a)4, Table 110.6-A, Table 110.6-B, 140.3(a)5D, Equation 140.3B, 140.3(c)4, 140.3(d)2F, 170.

• § 10-111 Medium relevance — show source text

  FENESTRATION AREA is the rough opening area of any fenestration product.

  FENESTRATION PRODUCT is any transparent or translucent material plus any sash, frame, mullions and dividers, in the facade of a building, including, but not limited to, windows, glazed doors, skylights, curtain walls, dynamic glazing, garden windows, glass block and glazing used in greenhouses.

  FENESTRATION REPAIR is the reconstruction or renewal for the purpose of maintenance of any fenestration product, component or system and shall not increase the preexisting energy consumption of the repaired fenestration product, component, system or equipment. Replacement of any component, system or equipment for which there are requirements in the Standards are considered an alteration (see Fenestration, alteration) and not a repair and is subject to the requirements of Part 6 of the Standards.

  FIELD-FABRICATED is a fenestration product whose frame is made at the construction site of standard dimensional lumber or other materials that were not previously cut, or otherwise formed with the specific intention of being used to fabricate a fenestration product. Field fabricated does not include site-built fenestration.

  FIN is an opaque surface, oriented vertically and projecting outward horizontally from an exterior vertical surface.

  FIN OFFSET is the horizontal distance from the edge of exposed exterior glazing at the jamb of a window to the fin.

  FIN PROJECTION is the horizontal distance, measured outward horizontally, from the surface of exposed exterior glazing at the jamb of a window to the outward edge of a fin.

  FIXED is fenestration that is not designed to be opened or closed.

  GREENHOUSE or GARDEN WINDOW is a window unit that consists of a three-dimensional, five-sided structure generally protruding from the wall in which it is installed. Operating sash may or may not be included.

  HORIZONTAL SLATS, when referring to a daylighting device, is a set of adjacent surfaces located directly adjacent to vertical fenestration, oriented horizontally and projecting horizontally from its interior or exterior vertical surface.

  INTEGRATED SHADING SYSTEM is a class of fenestration products including an active layer: e.g., shades, louvers, blinds or other materials permanently integrated between two or more glazing layers. The U -factor and/or SHGC and VT of the insulating glass assembly can be altered by reversibly changing the enclosed active layer.

  LIGHT SHELF is an adjacent, opaque surfaced daylighting device located at the sill of clerestory glazing, oriented horizontally and projecting horizontally from an interior or exterior vertical surface.

  MANUFACTURED or KNOCKED DOWN PRODUCT is a fenestration product constructed of materials that are factory cut or otherwise factory formed with the specific intention of being used to fabricate a fenestration product. Knocked down or partially assembled products may be sold as a fenestration product when provided with temporary and permanent labels as described in Section 10-111, or as a site-built fenestration product when not provided with temporary and permanent labels as described in Section 10-111.

  NFRC 100 is the National Fenestration Rating Council document titled “Procedure for Determining Fenestration Product U factors,” (2020) (ANSI/NFRC 100-2020).

  NFRC 200 is the National Fenestration Rating Council document titled “Procedure for Determining Fenestration Product Solar Heat Gain Coefficients and Visible Transmittance at Normal Incidence,” (2020) (ANSI/NFRC 200-2020).

• § 4.1 Medium relevance — show source text

  R609.4.1 Garage door labeling. Garage doors shall be labeled with a permanent label provided by the garage door manufacturer. The label shall identify the garage door manufacturer, the garage door model/series number, the positive and negative design wind pressure rating, the installation instruction drawing reference number, and the applicable test standard. Garage doors shall be installed in accordance with the manufacturer’s installation instructions.

  R609.5 Other exterior window and door assemblies. Exterior windows and door assemblies not included within the scope of Section R609.3 or R609.4 shall be tested in accordance with ASTM E330. Glass in assemblies covered by this section shall comply with Section R324.5.

  R609.6 Windborne debris protection. Protection of exterior windows, glass doors and doors with glass in buildings located in windborne debris regions shall be in accordance with Section R301.2.1.2.

  R609.6.1 Fenestration testing and labeling. Fenestration shall be tested by an approved independent laboratory, listed by an approved entity, and bear a label identifying the manufacturer, performance characteristics and an approved inspection agency to indicate compliance with the requirements of the following specification(s):

  1. ASTM E1886 and ASTM E1996; or

  2. AAMA 506.

  R609.6.2 Impact protective systems testing and labeling. Impact protective systems shall be tested for impact resistance by an approved independent laboratory for compliance with ASTM E1886 and ASTM E1996. Impact protective systems shall be tested

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  for design wind pressure by an approved independent laboratory for compliance with ASTM E330. Required design wind pressures shall be determined in accordance with Table R301.2.1(1), adjusted for height and exposure in accordance with Table R301.2.1(2) or determined in accordance with ASCE 7. For the purposes of this section, design wind pressures determined in accordance with ASCE 7 are permitted to be multiplied by 0.6.

  Impact protective systems bear a label identifying the manufacturer, performance characteristics and an approved inspection agency. Impact protective systems shall have a permanent label providing traceability to the manufacturer, product designation and performance characteristics. The permanent label shall be acid etched, sand blasted, ceramic fired, laser etched, embossed or of a type that, once applied, cannot be removed without being destroyed.

  R609.7 Anchorage methods. The methods cited in this section apply only to anchorage of window and glass door assemblies to the main force-resisting system.

  R609.7.1 Anchoring requirements. Window and glass door assemblies shall be anchored in accordance with the published manufacturer’s recommendations to achieve the design pressure specified. Substitute anchoring systems used for substrates not specified by the fenestration manufacturer shall provide equal or greater anchoring performance as demonstrated by accepted engineering practice.

  R609.7.2 Anchorage details. Products shall be anchored in accordance with the minimum requirements illustrated in Figures R609.7.2(1), R609.7.2(2), R609.7.2(3), R609.7.2(4), R609.7.2(5), R609.7.2(6), R609.7.2(7) and R609.7.2(8).

  FIGURE R609.7.2(1)—THROUGH THE FRAME

  FIGURE R609.7.2(2)—FRAME CLIP

  FRAME CLIP

• § 7.1 Medium relevance — show source text

  Impact protective systems bear a label identifying the manufacturer, performance characteristics and an approved inspection agency. Impact protective systems shall have a permanent label providing traceability to the manufacturer, product designation and performance characteristics. The permanent label shall be acid etched, sand blasted, ceramic fired, laser etched, embossed or of a type that, once applied, cannot be removed without being destroyed.

  R609.7 Anchorage methods. The methods cited in this section apply only to anchorage of window and glass door assemblies to the main force-resisting system.

  R609.7.1 Anchoring requirements. Window and glass door assemblies shall be anchored in accordance with the published manufacturer’s recommendations to achieve the design pressure specified. Substitute anchoring systems used for substrates not specified by the fenestration manufacturer shall provide equal or greater anchoring performance as demonstrated by accepted engineering practice.

  R609.7.2 Anchorage details. Products shall be anchored in accordance with the minimum requirements illustrated in Figures R609.7.2(1), R609.7.2(2), R609.7.2(3), R609.7.2(4), R609.7.2(5), R609.7.2(6), R609.7.2(7) and R609.7.2(8).

  FIGURE R609.7.2(1)—THROUGH THE FRAME

  FIGURE R609.7.2(2)—FRAME CLIP

  FRAME CLIP

  INSTALLATION

  FIGURE R609.7.2(3)—THROUGH THE FRAME

  TAPERED BUCKS ARE NOT ALLOWED

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  FIGURE R609.7.2(4)—FRAME CLIP

  FRAME CLIP INSTALLATION

  FIGURE R609.7.2(5)—THROUGH THE FLANGE

  FIGURE R609.7.2(6)—THROUGH THE FLANGE

  FIGURE R609.7.2(7)—FRAME CLIP

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  FIGURE R609.7.2(8)—THROUGH THE FLANGE

  R609.7.2.1 Masonry, concrete or other structural substrate. Where the wood shim or buck thickness is less than 1 [1] / 2 inches (38 mm), window and glass door assemblies shall be anchored through the jamb, or by jamb clip and anchors shall be embedded directly into the masonry, concrete or other substantial substrate material. Anchors shall adequately transfer load from the window or door frame into the rough opening substrate [see Figures R609.7.2(1) and R609.7.2(2)]. Where the wood shim or buck thickness is 1 [1] / 2 inches (38 mm) or more, the buck is securely fastened to the masonry, concrete or other substantial substrate, and the buck extends beyond the interior face of the window or door frame, window and glass door assemblies shall be anchored through the jamb, or by jamb clip, or through the flange to the secured wood buck.