How do cool roof / reflectance requirements appear in CalGreen tiers?

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

• CBC § 405.4 High relevance — show source text

  4. From Division A5.4,

  a. Comply with recycled content of 10 percent of materials based on estimated total cost, or use two products from Table A5.405.4 for at least 75 percent by cost in Section A5.405.4. b. Comply with the 65-percent reduction in construction and demolition waste in Section A5.408.3.1. c. Comply with one elective measure selected from this division.

  5. From Division A5.5,

  a. Comply with resilient flooring systems for 90 percent of resilient flooring in Section A5.504.4.7. b. Comply with thermal insulation meeting 2009 CHPS low-emitting materials list in Section A5.504.4.8. c. Comply with one elective measure selected from this division. 6. Comply with one additional elective measure selected from any division.

  1 Cool roof is required for compliance with Tiers 1 and 2 and may be used to meet energy standards in Part 6, exceed energy standards and to mitigate heat island effect.

  A5.601.3 CALGreen Tier 2.

  A5.601.3.1 Prerequisites. To achieve CALGreen tier status, a project must meet all of the mandatory measures in Chapter 5 and, in addition, meet the provisions of this section.

  A5.601.3.2 Energy performance. For the purposes of mandatory energy efficiency standards in this code, the California Energy Commission will continue to adopt mandatory standards.

  A5.601.3.3 Tier 2. Comply with the energy efficiency requirements in Section A5.203.1.1 and Section A5.203.1.2.2.

  A5.601.3.4 Voluntary measures for Tier 2. In addition to the provisions of Sections A5.601.3.1 and A5.601.3.3 above, compliance with the following voluntary measures from Appendix A5 is required for Tier 2:

  1. From Division A5.1, a. Comply with the designated parking requirements for fuel efficient vehicles for a minimum of 50 percent of parking capacity per Section A5.106.5.1. b. Electric vehicle (EV) charging [N] and Table A5.106.5.3.2 with footnotes. c. Comply with thermal emittance, solar reflectance or SRI values for cool roofs in Section A5.106.11.2 and Table A5.106.11.2.3. [1]

  d. Comply with three elective measures selected from this division.

  APPENDIX A5-42 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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  APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

  2. From Division A5.2 comply with TWO of the following:

  3. Outdoor lighting as described in A5.203.1.1.1.

  4. Service water heating in restaurants as described in A5.203.1.1.2.

  5. Warehouse Dock Seal Doors A5.203.1.1.3.

  6. Daylight Design Power Adjustments 5.203.1.1.4.

  7. Exhaust Air Heat Recovery A5.203.1.1.5.

  8. From Division A5.3,

• CBC § 601.3.4 High relevance — show source text

  A5.601.3.4 Voluntary measures for Tier 2. In addition to the provisions of Sections A5.601.3.1 and A5.601.3.3 above, compliance with the following voluntary measures from Appendix A5 is required for Tier 2:

  1. From Division A5.1, a. Comply with the designated parking requirements for fuel efficient vehicles for a minimum of 50 percent of parking capacity per Section A5.106.5.1. b. Electric vehicle (EV) charging [N] and Table A5.106.5.3.2 with footnotes. c. Comply with thermal emittance, solar reflectance or SRI values for cool roofs in Section A5.106.11.2 and Table A5.106.11.2.3. [1]

  d. Comply with three elective measures selected from this division.

  APPENDIX A5-42 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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  APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

  2. From Division A5.2 comply with TWO of the following:

  3. Outdoor lighting as described in A5.203.1.1.1.

  4. Service water heating in restaurants as described in A5.203.1.1.2.

  5. Warehouse Dock Seal Doors A5.203.1.1.3.

  6. Daylight Design Power Adjustments 5.203.1.1.4.

  7. Exhaust Air Heat Recovery A5.203.1.1.5.

  8. From Division A5.3,

  a. Comply with the 20-percent reduction for indoor potable water use in Section A5.303.2.3.2. b. Comply with three elective measures selected from this division.

  4. From Division A5.4,

  a. Comply with recycled content of 15 percent of materials based on estimated total cost, or use two products from Table A5.405.4 for at least 75 percent by cost in Section A5.405.4.1. b. Comply with the 80-percent reduction in construction and demolition waste in Section A5.408.3.1. c. Comply with three elective measures selected from this division.

  5. From Division A5.5,

  a. Comply with resilient flooring systems for 100 percent of resilient flooring in Section A5.504.4.7.1. Exception: Allowance may be permitted in Tier 2 for up to 5-percent specialty purpose flooring. b. Comply with thermal insulation meeting 2009 CHPS low-emitting materials list and no added formaldehyde in Section A5.504.4.8.1.

  c. Comply with three elective measures selected from this division. 6. Comply with three additional elective measures selected from any division.

  1 Cool roof is required for compliance with Tiers 1 and 2 and may be used to meet energy standards in Part 6, exceed energy standards and to mitigate heat island effect.

  A5.601.4 Compliance verification. Compliance with Section A5.601.2 or A5.601.3 shall be as required in Chapter 7 of this code. Compliance documentation shall be made part of the project record as required in Section 5.410.2 or 5.410.3.

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A5-43

• CBC § 106.11.2 High relevance — show source text

  APPENDIX A5-8 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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  APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

  A5.106.11.2 Cool roof. Use roofing materials having a minimum aged solar reflectance and thermal emittance complying with Sections A5.106.11.2.1 and A5.106.11.2.2 or a minimum aged Solar Reflectance Index (SRI) complying with Section A5.106.11.2.3 and as shown in Table A5.106.11.2.2 for Tier 1 or Table A5.106.11.2.3 for Tier 2.

  Exceptions:

  1. Roof constructions that have a thermal mass over the roof membrane, including areas of vegetated (green) roofs, weighing at least 25 pounds per square foot.
  2. Roof area covered by building integrated solar photovoltaic and building integrated solar thermal panels.

  A5.106.11.2.1 Solar reflectance. Roofing materials shall have a minimum aged solar reflectance equal to or greater than the values specified in Table A5.106.11.2.2 for Tier 1 and Table A5.106.11.2.3 for Tier 2.

  If Cool Roof Rating Council (CRRC) testing for aged reflectance is not available for any roofing products, the aged value shall be determined using the CRRC certified initial value using the equation ρ aged = [0.2 + ß [ρ initial – 0.2], where ρ initial = the initial solar reflectance and soiling resistance, ß, listed by product type in Table A5.106.11.2.1.

  Solar reflectance may also be certified by other supervisory entities approved by the Energy Commission pursuant to Title 24, Part 1, California Administrative Code.

  TABLE A5.106.11.2.1—VALUES OF SOILING RESISTANCE, ß, BY PRODUCT TYPE	Col2	Col3
  PRODUCT TYPE	CRRC PRODUCT CATEGORY	ß
  Field-applied coating	Field-applied coating	0.65
  Other	Not a field-applied coating	0.70

  A5.106.11.2.2 Thermal emittance. Roofing materials shall have a CRRC initial or aged thermal emittance as determined in accordance with ASTM E408 or C1371 equal to or greater than those specified in Table A5.106.11.2.2 for Tier 1 and Table A5.106.11.2.3 for Tier 2.

  Thermal emittance may also be certified by other supervisory entities approved by the Energy Commission pursuant to Title 24, Part 1, California Administrative Code.

  TABLE A5.106.11.2.2 [BSC]—TIER 1	Col2	Col3	Col4	Col5
  ROOF SLOPE	CLIMATE ZONE	MINIMUM AGED SOLAR REFLECTANCE	THERMAL EMITTANCE	SRI
  ≤ 2:12	1–16	0.63	0.75	75
  > 2:12	1–16	0.20	0.75	16

• CBC § 601.2.4 High relevance — show source text

  A5.601.2.4 Voluntary measures for Tier 1. In addition to the provisions of Sections A5.601.2.1 and A5.601.2.3 above, compliance with the following voluntary measures from Appendix A5 is required for Tier 1:

  1. From Division A5.1, a. Comply with the designated parking requirements for high-efficiency vehicles for a minimum of 35 percent of parking capacity per Section A5.106.5.1. b. Electric vehicle (EV) charging [N] and Table A5.106.5.3.1 w/ footnotes. c. Comply with thermal emittance, solar reflectance or SRI values for cool roofs in Section A5.106.11.2 and Table A5.106.11.2.2. [1]

  d. Comply with one elective measure selected from this division. 2. From Division A5.2 comply with ONE of the following:

  1. Outdoor lighting as described in A5.203.1.1.1.

  2. Service water heating in restaurants as described in A5.203.1.1.2.

  3. Warehouse Dock Seal Doors A5.203.1.1.3.

  4. Daylight Design Power Adjustments 5.203.1.1.4.

  5. Exhaust Air Heat Recovery A5.203.1.1.5.

  6. From Division A5.3,

  a. Comply with the 12-percent reduction for indoor potable water use in Section A5.303.2.3.1. b. Comply with one elective measure selected from this division.

  4. From Division A5.4,

  a. Comply with recycled content of 10 percent of materials based on estimated total cost, or use two products from Table A5.405.4 for at least 75 percent by cost in Section A5.405.4. b. Comply with the 65-percent reduction in construction and demolition waste in Section A5.408.3.1. c. Comply with one elective measure selected from this division.

  5. From Division A5.5,

  a. Comply with resilient flooring systems for 90 percent of resilient flooring in Section A5.504.4.7. b. Comply with thermal insulation meeting 2009 CHPS low-emitting materials list in Section A5.504.4.8. c. Comply with one elective measure selected from this division. 6. Comply with one additional elective measure selected from any division.

  1 Cool roof is required for compliance with Tiers 1 and 2 and may be used to meet energy standards in Part 6, exceed energy standards and to mitigate heat island effect.

  A5.601.3 CALGreen Tier 2.

  A5.601.3.1 Prerequisites. To achieve CALGreen tier status, a project must meet all of the mandatory measures in Chapter 5 and, in addition, meet the provisions of this section.

  A5.601.3.2 Energy performance. For the purposes of mandatory energy efficiency standards in this code, the California Energy Commission will continue to adopt mandatory standards.

  A5.601.3.3 Tier 2. Comply with the energy efficiency requirements in Section A5.203.1.1 and Section A5.203.1.2.2.

• CBC § 106.7.1 High relevance — show source text

  A5.106.7.1 Fenestration. Provide vegetative or man-made shading devices for all fenestration on east-, south- and west-facing walls.

  A5.106.7.1.1 East and west walls. Shading devices shall have 30-percent coverage to a height of 20 feet or to the top of the exterior wall, whichever is less. Calculate shade coverage on the summer solstice at 10 AM for east-facing walls and at 3 PM for west-facing walls.

  A5.106.7.1.2 South walls. Shading devices shall have 60-percent coverage to a height of 20 feet or to the top of the exterior wall, whichever is less.

  A5.106.7.2 Opaque wall areas. Use wall surfacing with minimum SRI 25 (aged), for 75 percent of opaque wall areas.

  Exception: Use of vegetated shade in Wildland-Urban Interface Areas as defined in Chapter 7A (Materials and Construction Methods for Exterior Wildfire Exposure) of the California Building Code shall meet the requirements of that chapter.

  Note: If not available from the manufacturer, aged SRI value calculations may be found at the California Energy Commis-sion’s web site at www.energy.ca.gov.

  A5.106.8 Reserved.

  A5.106.9 Reserved.

  A5.106.10 Reserved.

  A5.106.11 Reduction of heat island effect. Reduce heat islands by requiring Section A5.106.11.1 Hardscape alternatives, Section A5.106.11.2 Cool roofs, or Section A5.106.11.3 Shade trees.

  A5.106.11.1 Hardscape alternatives. Use one or a combination of strategies 1 and 2 for 50 percent of site hardscape or put 50 percent of parking underground.

  1. Use light colored materials with an initial solar reflectance value of at least 0.30 as determined in accordance with American Society for Testing and Materials (ASTM) Standards E1918 or C1549.
  2. Use open-grid pavement system or pervious or permeable pavement system.

  APPENDIX A5-8 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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  APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

  A5.106.11.2 Cool roof. Use roofing materials having a minimum aged solar reflectance and thermal emittance complying with Sections A5.106.11.2.1 and A5.106.11.2.2 or a minimum aged Solar Reflectance Index (SRI) complying with Section A5.106.11.2.3 and as shown in Table A5.106.11.2.2 for Tier 1 or Table A5.106.11.2.3 for Tier 2.

  Exceptions:

  1. Roof constructions that have a thermal mass over the roof membrane, including areas of vegetated (green) roofs, weighing at least 25 pounds per square foot.
  2. Roof area covered by building integrated solar photovoltaic and building integrated solar thermal panels.

  A5.106.11.2.1 Solar reflectance. Roofing materials shall have a minimum aged solar reflectance equal to or greater than the values specified in Table A5.106.11.2.2 for Tier 1 and Table A5.106.11.2.3 for Tier 2.

• CBC § 106.5.1 High relevance — show source text

  SRI values used to comply with this section shall be calculated using the Solar Reflectance Index (SRI) Calculation Worksheet (SRI-WS) developed by the California Energy Commission or in compliance with ASTM E1980-01 as specified in the 2022 California Energy Code. Solar reflectance values used in the SRI-WS shall be based on the aged reflectance value of the roofing product or the equation in Section A4.106.5.1 if the CRRC certified aged solar reflectance are not available. Certified thermal emittance used in the SRI-WS may be either the initial value or the aged value listed by the CRRC.

  Solar reflectance and thermal emittance may also be certified by other supervisory entities approved by the Commission pursuant to Title 24, Part 1, California Administrative Code.

  Note: The Solar Reflectance Index Calculation Worksheet (SRI-WS) is available by contacting the Energy Standards Hotline at 1-800-772-3300, website at www.energy.ca.gov or by email at Title24@energy.ca.gov.

  TABLE A4.106.5.1(1)—TIER 1 – LOW-RISE RESIDENTIAL	Col2	Col3	Col4	Col5
  ROOF SLOPE	CLIMATE ZONE	MINIMUM 3-YEAR AGED SOLAR REFLECTANCE	THERMAL EMITTANCE	SRI
  ≤ 2:12	13 & 15	0.63	0.75	75
  > 2:12	10 – 15	0.20	0.75	16

  TABLE A4.106.5.1(2)—TIER 2 – LOW-RISE RESIDENTIAL	Col2	Col3	Col4	Col5
  ROOF SLOPE	CLIMATE ZONE	MINIMUM 3-YEAR AGED SOLAR REFLECTANCE	THERMAL EMITTANCE	SRI
  ≤ 2:12	2, 4, 6 – 15	0.65	0.85	78
  > 2:12	2, 4, 6 – 15	0.23	0.85	20

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A4-5

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  TABLE A4.106.5.1(3)—TIER 1 – HIGH-RISE RESIDENTIAL BUILDINGS, HOTELS AND MOTELS	Col2	Col3	Col4	Col5
  ROOF SLOPE	CLIMATE ZONE	MINIMUM 3-YEAR AGED SOLAR REFLECTANCE	THERMAL EMITTANCE	SRI
  ≤ 2:12	9, 10, 11, 13, 14, 15	0.55	0.75	64
  > 2:12	2 – 15	0.20	0.75	16

• CBC § 409.4 High relevance — show source text

  Solar access is the ratio of solar insolation including shade to the
  solar insolation without shade. Shading from obstructions located on the roof or any other part of the building shall not be included in the determination of annual solar access.
  3.
  Life cycle assessment compliant with Section A5.409.4 in this code may be substituted for prescriptive measures from Division A5.4.|

  A5.601.1 Scope. The measures contained in this appendix are not mandatory unless adopted by local government as specified in Section 101.7. The provisions of this section outline means of achieving enhanced construction or reach levels by incorporating addi

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A5-41

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  APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

  tional green building measures for newly constructed nonresidential buildings as well as additions and alterations. In order to meet one of the tier levels designers, builders or property owners are required to incorporate additional green building measures necessary to meet the threshold of each level. Refer to the provisions in Section 301.3 for nonresidential additions and alterations scope and application.

  A5.601.2 CALGreen Tier 1

  A5.601.2.1 Prerequisites. To achieve CALGreen tier status, a project must meet all of the mandatory measures in Chapter 5 and, in addition, meet the provisions of this section.

  A5.601.2.2 Energy performance. For the purposes of mandatory energy efficiency standards in this code, the California Energy Commission will continue to adopt mandatory standards.

  A5.601.2.3 Tier 1. Comply with the energy efficiency requirements in Section A5.203.1.1 and Section A5.203.1.2.1.

  A5.601.2.4 Voluntary measures for Tier 1. In addition to the provisions of Sections A5.601.2.1 and A5.601.2.3 above, compliance with the following voluntary measures from Appendix A5 is required for Tier 1:

  1. From Division A5.1, a. Comply with the designated parking requirements for high-efficiency vehicles for a minimum of 35 percent of parking capacity per Section A5.106.5.1. b. Electric vehicle (EV) charging [N] and Table A5.106.5.3.1 w/ footnotes. c. Comply with thermal emittance, solar reflectance or SRI values for cool roofs in Section A5.106.11.2 and Table A5.106.11.2.2. [1]

  d. Comply with one elective measure selected from this division. 2. From Division A5.2 comply with ONE of the following:

  1. Outdoor lighting as described in A5.203.1.1.1.

  2. Service water heating in restaurants as described in A5.203.1.1.2.

  3. Warehouse Dock Seal Doors A5.203.1.1.3.

  4. Daylight Design Power Adjustments 5.203.1.1.4.

  5. Exhaust Air Heat Recovery A5.203.1.1.5.

  6. From Division A5.3,

  a. Comply with the 12-percent reduction for indoor potable water use in Section A5.303.2.3.1. b. Comply with one elective measure selected from this division.

  4. From Division A5.4,
• CBC § 106.11.2.1 Medium relevance — show source text

  Solar reflectance may also be certified by other supervisory entities approved by the Energy Commission pursuant to Title 24, Part 1, California Administrative Code.

  TABLE A5.106.11.2.1—VALUES OF SOILING RESISTANCE, ß, BY PRODUCT TYPE	Col2	Col3
  PRODUCT TYPE	CRRC PRODUCT CATEGORY	ß
  Field-applied coating	Field-applied coating	0.65
  Other	Not a field-applied coating	0.70

  A5.106.11.2.2 Thermal emittance. Roofing materials shall have a CRRC initial or aged thermal emittance as determined in accordance with ASTM E408 or C1371 equal to or greater than those specified in Table A5.106.11.2.2 for Tier 1 and Table A5.106.11.2.3 for Tier 2.

  Thermal emittance may also be certified by other supervisory entities approved by the Energy Commission pursuant to Title 24, Part 1, California Administrative Code.

  TABLE A5.106.11.2.2 [BSC]—TIER 1	Col2	Col3	Col4	Col5
  ROOF SLOPE	CLIMATE ZONE	MINIMUM AGED SOLAR REFLECTANCE	THERMAL EMITTANCE	SRI
  ≤ 2:12	1–16	0.63	0.75	75
  > 2:12	1–16	0.20	0.75	16

  A5.106.11.2.3 Solar reflectance index alternative. Solar Reflectance Index (SRI) equal to or greater than the values specified in Table A5.106.11.2.2 for Tier 1 and Table A5.106.11.2.3 for Tier 2 may be used as an alternative to compliance with the aged solar reflectance values and thermal emittance.

  SRI values used to comply with this section shall be calculated using the Solar Reflectance Index (SRI) Calculation Worksheet (SRI-WS) developed by the California Energy Commission or in compliance with ASTM E1980-11 as specified in the California Energy Code, Section 110.8(i)3. Solar reflectance values used in the SRI-WS shall be based on the aged reflectance value of the roofing product or the equation in section A5.106.11.2.1 if the CRRC certified aged solar reflectance are not available. Certified Thermal emittance used in the SRI-WS may be either the initial value or the aged value listed by the CRRC.

  Solar reflectance and thermal emittance may also be certified by other supervisory entities approved by the Commission pursuant to Title 24, Part 1, California Administrative Code.

  Note: The Solar Reflectance Index Calculation Worksheet (SRI-WS) is available by contacting the Energy Standard Hotline at 1-800-772-3300, website at www.energy.ca.gov or by email at Title24@ energy.state.ca.us.

• CBC § 106.11.2.3 Medium relevance — show source text

  A5.106.11.2.3 Solar reflectance index alternative. Solar Reflectance Index (SRI) equal to or greater than the values specified in Table A5.106.11.2.2 for Tier 1 and Table A5.106.11.2.3 for Tier 2 may be used as an alternative to compliance with the aged solar reflectance values and thermal emittance.

  SRI values used to comply with this section shall be calculated using the Solar Reflectance Index (SRI) Calculation Worksheet (SRI-WS) developed by the California Energy Commission or in compliance with ASTM E1980-11 as specified in the California Energy Code, Section 110.8(i)3. Solar reflectance values used in the SRI-WS shall be based on the aged reflectance value of the roofing product or the equation in section A5.106.11.2.1 if the CRRC certified aged solar reflectance are not available. Certified Thermal emittance used in the SRI-WS may be either the initial value or the aged value listed by the CRRC.

  Solar reflectance and thermal emittance may also be certified by other supervisory entities approved by the Commission pursuant to Title 24, Part 1, California Administrative Code.

  Note: The Solar Reflectance Index Calculation Worksheet (SRI-WS) is available by contacting the Energy Standard Hotline at 1-800-772-3300, website at www.energy.ca.gov or by email at Title24@ energy.state.ca.us.

  TABLE A5.106.11.2.3 [BSC]—TIER 2	Col2	Col3	Col4	Col5
  ROOF SLOPE	CLIMATE ZONE	MINIMUM AGED SOLAR REFLECTANCE	THERMAL EMITTANCE	SRI
  ≤ 2:12	1–16	0.68	0.85	82
  > 2:12	1–16	0.28	0.85	27

  A5.106.11.2.4 Verification of compliance. If no documentation is available, an inspection shall be conducted to ensure roofing materials meet cool roof aged solar reflectance and thermal emittance or SRI values.

  A5.106.11.3 Shade trees. In the absence of a local shade tree ordinance, comply with mandatory Section 5.106.12 Shade trees.

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  APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

  SECTION A5.107—BIRD-FRIENDLY BUILDING DESIGN

  A5.107 Bird-friendly building design. A newly constructed building, or an alteration of an existing building that includes the addition or replacement of 50 percent or more of the exterior glazing, shall comply with the bird-friendly building design elements and features in Sections A5.107.1 through A5.107.3 of the California Energy Code and the fire hazard severity zone regulations in Chapter 7A of the California Building Code.

  Exception: Alteration to the glazing in historical buildings per the California Historical Building Code .

• CBC § 110.8 Medium relevance — show source text

  I. Roofs. Replacements of the exterior surface of existing roofs, including adding a new surface layer on top of the existing exterior surface, shall meet the requirements of Section 110.8 and the applicable requirements of Subsections i and ii where more than 50 percent of the roof is being replaced. i. Steep-sloped roofs. Steep-sloped roofs shall meet the following: New roofing products in Climate Zones 4 and 8 through 15 shall have a minimum aged solar reflectance of 0.20 and a minimum thermal emittance of 0.75, or a minimum SRI of 16. Exception 1 to Section 150.2(b)1Ii: The following shall be considered equivalent to Subsection i: a. Buildings with ceiling assemblies with a U -factor lower than or equal to 0.025 or that are insulated with at least R-38 ceiling insulation; or b. Buildings with a radiant barrier in the attic, where the radiant barrier is not installed directly above spaced sheathing, meeting the requirements of Section 150.1(c)2; or c. In Climate Zones 2, 4, 9, 10, 12 and 14, buildings that have no ducts in the attic; or d. Buildings with R-2 or greater continuous insulation above or below the roof deck. Exception 2 to Section 150.2(b)1Ii: Roof area covered by building integrated photovoltaic panels or building integrated solar thermal panels is not required to meet minimum requirements for aged solar reflectance, thermal emittance or SRI.

  Exception 3 to Section 150.2(b)1Ii: Roof constructions with a weight of at least 25 lb/ft [2] are not required to comply with the minimum requirements for aged solar reflectance and thermal emittance, or SRI. ii. Low-sloped roofs. Low-sloped roofs shall meet the following: a. New roofing products in Climate Zones 4 and 6 through 15 shall have an aged solar reflectance equal to or greater than 0.63 and a thermal emittance equal or greater than 0.75, or a minimum SRI of 75. Exception 1 to Section 150.2(b)1Iiia: The aged solar reflectance can be met by using insulation at the roof deck specified in Table 150.2-E.

  TABLE 150.2-E—AGED SOLAR REFLECTANCE INSULATION TRADE-OFF TABLE	Col2	Col3
  MINIMUM AGED SOLAR REFLECTANCE	ROOF DECK CONTINUOUS INSULATION R-VALUE (Climate Zones 6–7)	ROOF DECK CONTINUOUS INSULATION R-VALUE (Climate Zones 2, 4 and 8–15)
  0.60	2	16
  0.55	4	18
  0.50	6	20
  0.45	8	22
  No requirement	10	24

  Exception 2 to Section 150.2(b)1Iiia: Roof area covered by building integrated photovoltaic panels or building integrated solar thermal panels is not required to meet the minimum requirements for aged solar reflectance, thermal emittance or SRI.

• CBC § 405.4 Medium relevance — show source text

  4. From Division A5.4,

  a. Comply with recycled content of 15 percent of materials based on estimated total cost, or use two products from Table A5.405.4 for at least 75 percent by cost in Section A5.405.4.1. b. Comply with the 80-percent reduction in construction and demolition waste in Section A5.408.3.1. c. Comply with three elective measures selected from this division.

  5. From Division A5.5,

  a. Comply with resilient flooring systems for 100 percent of resilient flooring in Section A5.504.4.7.1. Exception: Allowance may be permitted in Tier 2 for up to 5-percent specialty purpose flooring. b. Comply with thermal insulation meeting 2009 CHPS low-emitting materials list and no added formaldehyde in Section A5.504.4.8.1.

  c. Comply with three elective measures selected from this division. 6. Comply with three additional elective measures selected from any division.

  1 Cool roof is required for compliance with Tiers 1 and 2 and may be used to meet energy standards in Part 6, exceed energy standards and to mitigate heat island effect.

  A5.601.4 Compliance verification. Compliance with Section A5.601.2 or A5.601.3 shall be as required in Chapter 7 of this code. Compliance documentation shall be made part of the project record as required in Section 5.410.2 or 5.410.3.

  2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A5-43

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  APPENDIX A5 — NONRESIDENTIAL VOLUNTARY MEASURES

  A5.602

  CALGreen VERIFICATION GUIDELINES MANDATORY MEASURES CHECKLIST

  Application: This checklist shall be used for nonresidential projects that meet one of the following: new construction, building additions of 1,000 square feet or greater, or building alterations with a permit valuation of $200,000 or more pursuant to Section 301.3 AND do not trigger a Tier 1 or Tier 2 requirement:

  Y = Yes (section has been selected and/or included)

  — N/A = Not Applicable (code section does not apply to the project mainly used for additions and alterations) O = Other (provide explanation)

  [N] = New construction pursuant to Section 301.3

  [A ] = Additions and/or Alterations pursuant to Section 301.3

  CHAPTER 5 DIVISIONS	Col2	SECTION TITLE	CODE SECTION	Y	N/A	O	PLAN SHEET, SPEC OR ATTACH
  DIVISION 5.1 Planning and Design	Mandatory	Deconstruction and reuse of existing structures, Scope with Exception	5.105.1
  DIVISION 5.1 Planning and Design	Mandatory	Reuse of existing building & Verification of compliance with note	5.105.2 and 5.105.2.1
  DIVISION 5.1 Planning and Design	Mandatory	Storm water pollution prevention for projects that disturb less than 1 acre of land	5.106.

• CBC § 106.5 Medium relevance — show source text

  Exceptions:

  1. The primary driveway, primary entry walkway and entry porch or landing shall not be included when calculating the area required to be a permeable surface.
  2. Required accessible routes for persons with disabilities as required by California Code of Regulations, Title 24, Part 2, Chapter 11A and/or Chapter 11B as applicable.

  A4.106.5 Cool roof for reduction of heat island effect. Roofing materials for Tier 1 and Tier 2 buildings shall comply with this section:

  Exceptions:

  1. Roof constructions that have a thermal mass over the roof membrane including areas of vegetated (green) roofs, weighing at least 25 pounds per square foot.
  2. Roof areas covered by building integrated solar photovoltaic panels and building integrated solar thermal panels.

  A4.106.5.1 Solar reflectance. Roofing materials shall have a minimum 3-year aged solar reflectance equal to or greater than the values specified in Tables A4.106.5.1(1) and A4.106.5.1(3) for Tier 1 and Tables A4.106.5.1(2) and A4.105.5.1(4) for Tier 2.

  If CRRC testing for aged solar reflectance is not available for any roofing products, the aged value shall be determined using the Cool Roof Rating Council (CRRC) certified initial value using the equation ρ aged = [0.2 + β[ρ initial -0.2], where ρ initial = the initial Solar Reflectance and soiling resistance, β, is listed by product type in Table A4.106.5.1.

  Solar reflectance may also be certified by other supervisory entities approved by the Energy Commission pursuant to Title 24, Part 1, Section 10-113.

  TABLE A4.106.5.1—VALUES OF SOILING RESISTANCE (ß) BY PRODUCT TYPE	Col2	Col3
  PRODUCT TYPE	CCRC PRODUCT CATEGORY	ß
  Field-applied coating	Field-applied coating	0.65
  Other	Not a field-applied coating	0.70

  A4.106.5.2 Thermal emittance. Roofing materials shall have a CRRC initial or aged thermal emittance equal to or greater than those specified in Tables A4.106.5.1(1) and A4.106.5.1(3) for Tier 1 and Tables A4.106.5.1(2) and A4.106.5.1(4) for Tier 2.

  Thermal emittance may also be certified by other supervisory entities approved by the Energy Commission pursuant to Title 24, Part 1, California Administrative Code.

  A4.106.5.3 Solar reflectance index alternative. Solar Reflectance Index (SRI) equal to or greater than the values specified in Tables A4.106.5.1(1) and A4.106.5.1(3) for Tier 1 and Tables A4.106.5.1(2) and A4.106.5.1(4) for Tier 2 may be used as an alternative to compliance with the 3-year aged solar reflectance values and thermal emittance.