Title 24 · California Energy Code

Roofing product certification and 3‑year aged solar reflectance labeling

Q: What if a manufacturer provides only CRRC initial values?

If only a CRRC initial reflectance is available and no CRRC 3‑year aged value exists, derive the aged value using the code equation ρaged = 0.2 + 0.7 × (ρinitial − 0.2) (use the β value per product type where required). § A6.205.3.9.2 and Table 110.8‑B.

Q: Can I use SRI instead of aged reflectance and emittance?

Yes. The SRI may be used as an alternative compliance path if calculated per ASTM E1980 and using the 3‑year aged reflectance as the reflectance input; the code requires specific approach and wind assumptions. § A6.205.3.9.3 and § 110.8(i)3.

Q: What happens if the product is not certified under § 10‑113?

You must use the default aged values specified by the code (asphalt shingles 0.08/0.75; all other products 0.10/0.75) or follow the derivation rule if CRRC initial values exist. § A6.205.3.9.1 (Exception) and § A6.205.3.9.2.

Q: Are roof areas under PV panels exempt?

Yes — in many Title 24 sections, roof areas covered by building‑integrated PV or thermal panels are excluded from the aged reflectance/emittance or SRI requirements where specifically noted (see exceptions in § 150.2 and related sections).

Q: Where can I find the exact label/certification format required by § 10‑113?

The provided files reference § 10‑113 as the controlling certification/labeling procedure, but the full § 10‑113 text was not included in your uploaded documents. You should consult Title 24, Part 1 § 10‑113 directly (or the Energy Commission guidance) for the precise label fields and submission process.

If your roof material is to be used to meet California Title 24 cool‑roof rules, the code requires the product’s **thermal emittance** and **3‑year aged solar reflectance** be shown on a certification/label produced under **§ 10‑113**; if no § 10‑113 certification exists the code forces default aged values (e.g., asphalt shingles 0.08/0.75) or a formula to derive aged reflectance from a CRRC initial value.

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Last reviewed: July 6, 2026

What the code requires — plain English

A roofing product’s thermal emittance and 3‑year aged solar reflectance must be certified and labeled following the labeling/certification procedure in § 10‑113. This requirement is the route by which roofing materials can be used to meet Title 24 energy requirements (prescriptive or trade‑offs). See § A6.205.3.9.1 for the Green Building Standards Code cross‑reference to that certification requirement.

The single most important rule: roofing products used to demonstrate compliance must have their 3‑year aged solar reflectance and thermal emittance shown on a certification/label produced under § 10‑113 — otherwise default aged values apply.

Requirements in detail

Key defined terms (first use bolded)

3‑year aged solar reflectance — the reflectance value representing expected performance after weathering/soiling (the code requires the aged value for compliance).
Thermal emittance — the material’s ability to emit absorbed heat; used together with aged reflectance (values from CRRC or other supervisory entities).
Certification/labeling under § 10‑113 — the code procedure that must be used to certify and label roofing products for Title 24 compliance (the uploaded files reference § 10‑113 as the required procedure, but the full text of § 10‑113 was not included in the provided documents).

What exactly must be certified and labeled

A roofing product’s thermal emittance and 3‑year aged solar reflectance must be certified and labeled per § 10‑113 to be used for compliance with the energy code (Title 24, Part 6) requirements. § A6.205.3.9.1 points this requirement to § 10‑113.
If the product is not certified under § 10‑113, the code requires using default aged reflectance/thermal emittance values: asphalt shingles = 0.08 / 0.75, all other roofing products = 0.10 / 0.75. These defaults are explicit exceptions in § A6.205.3.9.1.
If CRRC 3‑year aged test data are not available, the code prescribes an equation to derive aged reflectance from the CRRC initial value:
ρaged = 0.2 + 0.7 × (ρinitial − 0.2). This derivation is specified in § A6.205.3.9.2 (and echoed in the Energy Code sections).
The Solar Reflectance Index (SRI), calculated per ASTM E1980 (approach and wind assumptions specified in the Energy Code), may be used as an alternative compliance path based on the 3‑year aged reflectance value. See § A6.205.3.9.3 and § 110.8(i)3.

Decision‑relevant dimensions and values

Decision dimension	Typical value / rule	Code reference
Required documentation for using a product’s aged reflectance/emittance	Certification & label per § 10‑113	§ A6.205.3.9.1
Default aged reflectance / emittance if not certified	Asphalt shingles = 0.08 / 0.75; Other products = 0.10 / 0.75	§ A6.205.3.9.1 (Exception)
Derivation when CRRC 3‑yr aged not available	ρaged = 0.2 + 0.7 × (ρinitial − 0.2)	§ A6.205.3.9.2
Soiling resistance β (for derivation)	Field‑applied coating = 0.65; Other = 0.70 (used in the derivation equation in the Energy Code table equivalents)	Table 110.8‑B / A4.106.5.1 tables (see § 110.8 and A4.106.5.1)
SRI alternative use	SRI computed per ASTM E1980 and using 3‑year aged reflectance; moderate wind velocity 2–6 m/s	§ A6.205.3.9.3 and § 110.8(i)3

Sources for the table above: § A6.205.3.9.1–.3 and the Energy Code § 110.8 (Table 110.8‑B) and the A4/A5 tables referenced in the uploaded files.

What the code does not provide in the uploaded files

The uploaded files repeatedly point to § 10‑113 as the required certification/label procedure but the full text of § 10‑113 (the labeling content and format requirements) was not present in the material you provided. I cannot create or assert specifics of § 10‑113 beyond what is referenced in the sections above.

Exceptions & special cases

Products not certified under § 10‑113 must use the default aged values (asphalt shingles 0.08/0.75; all others 0.10/0.75). § A6.205.3.9.1 (Exception).
Where CRRC 3‑year aged measurements are not available, use the prescribed derivation equation from the CRRC initial value (ρinitial) as specified in § A6.205.3.9.2 and the Energy Code (the soiling resistance β depends on product type and is listed in the code tables).
Roof areas covered by building‑integrated photovoltaic (PV) panels or solar thermal panels are exempt from the minimum aged reflectance/emittance and SRI requirements where specifically noted in Title 24 sections (see § 150.2 exceptions).
Roof constructions having thermal mass ≥ 25 lb/ft² (heavy roofs) are exempt from the aged reflectance/emittance or SRI minimums where noted.

Common mistakes

Assuming the CRRC initial value equals the 3‑year aged value. The code requires the aged value (or derivation) for compliance; using initial values without applying the derivation or certification is incorrect.
Failing to check whether a product is actually certified under § 10‑113 (and instead relying on vendor literature). The code requires certification/labeling under § 10‑113 to use manufacturer aged data. § A6.205.3.9.1.
Using the wrong β (soiling resistance) value when deriving aged reflectance from initial reflectance — use the product type values in the code tables (field‑applied vs. other).
Neglecting to document the certification/label or relying on a product listing that does not explicitly reference § 10‑113 certification. The code expects verifiable certification/labels for enforcement and plan checks.

Worked example — concrete numbers

Scenario: You are replacing a steep‑sloped roof in Climate Zone 12 with asphalt shingles. The energy code for steep‑sloped roofs in many zones requires a minimum aged solar reflectance = 0.20 and thermal emittance = 0.75 (or SRI alternative) for compliance with the prescriptive requirements.

Step 1 — Check certification:

If the shingle has a label/certification produced under § 10‑113 showing a 3‑year aged reflectance = 0.22 and emittance = 0.85, you may use those certified aged values to demonstrate compliance. (§ A6.205.3.9.1 requires certification under § 10‑113.)

Step 2 — If no § 10‑113 certification but CRRC initial is available:

Suppose the CRRC initial solar reflectance (ρinitial) is 0.40, and no CRRC 3‑year aged number is listed. Use the code equation (ρaged = 0.2 + 0.7 × (ρinitial − 0.2)) per § A6.205.3.9.2:
ρaged = 0.2 + 0.7 × (0.40 − 0.2) = 0.2 + 0.7 × 0.20 = 0.2 + 0.14 = 0.34.
Compare: 0.34 aged reflectance > required 0.20, and if thermal emittance (certified initial or CRRC listed) is ≥ 0.75, the product can meet the prescriptive requirement.

Step 3 — If product is not certified under § 10‑113 and no CRRC data:

Use the default for asphalt shingles: 0.08 / 0.75 (aged reflectance 0.08). That would not meet the 0.20 aged reflectance requirement, so the roof would fail prescriptive compliance unless another compliance path (insulation trade‑off, SRI alternative, or different product) is used. § A6.205.3.9.1 (Exception).

Related provisions (quick list)

§ A6.205.3.9.1 — Roofing products must be certified and labeled per § 10‑113 (Green Building Standards Code).
§ A6.205.3.9.2 — Derivation equation when CRRC 3‑yr aged is unavailable.
§ A6.205.3.9.3 — SRI may be used as an alternate compliance metric (requires 3‑yr aged reflectance as input).
§ 110.8(i)1 and Table 110.8‑B — Energy Code requirement that roofing product thermal emittance and aged reflectance be certified/labeled under § 10‑113; Table 110.8‑B lists β values.
§ 150.2(b)1Ii (and related replacement rules) — Minimum aged reflectance/emittance or SRI thresholds for new or replacement roofs (steep and low slopes); contains exceptions for PV coverage and heavy roof constructions.
Appendix A4 / A5 Tables (A4.106.5.x, A5.106.11.2.x) — Provide minimum 3‑year aged solar reflectance, thermal emittance, and SRI values for voluntary measures (useful references).

Note: the uploaded materials repeatedly refer to § 10‑113 as the required certification and labeling procedure for using a roofing product’s aged values, but the full text of § 10‑113 (label format, data fields, submission steps, supervising entities) was not contained in the files you provided — to explain the exact label contents or certification steps I would need the actual § 10‑113 text.

Code references

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

§ 205.3.7.2.1 High relevance — show source text
A6.205.3.7.2.1 Cover the insulation with a solid guard that protects against damage from ultraviolet radiation, moisture, landscaping operation, equipment maintenance and wind; and

A6.205.3.7.2.2 Include a rigid plate, which penetrates the slab and blocks the insulation from acting as a conduit for insects from the ground to the structure above the foundation.

A6.205.3.8 Wet insulation systems. When insulation is installed on roofs above the roofing membrane or layer used to seal the roof from water penetration, the effective R-value of the insulation shall be as specified in Reference Joint Appendix JA4 of the California Energy Commission 2008 Building Energy Efficiency Standards for Residential and Nonresidential Buildings.

A6.205.3.9 Roofing products solar reflectance and thermal emittance.

A6.205.3.9.1 In order to meet the requirements of Sections 141, 142, 143(a)1, 149(b)1B, 151(f)12, 152(b)1H or 152(b)2 of Title 24, Part 6, a roofing product’s thermal emittance and 3-year aged solar reflectance shall be certified and labeled according to the requirements of Section 10-113 of Title 24, Part 1.

Exception: Roofing products that are not certified according to Section 10-113 of Title 24, Part 1 shall assume the following default aged reflectance/emittance values:

A6.205.3.9.1.1 For asphalt shingles, 0.08/0.75

A6.205.3.9.1.2 For all other roofing products, 0.10/ 0.75

A6.205.3.9.2 If CRRC testing for 3-year aged reflectance is not available for any roofing products, the 3-year aged value shall be derived from the CRRC initial value using the equation R aged = [0.2 + 0.7[ρ initial –0.2], where ρ initial = the initial Solar Reflectance. A6.205.3.9.3 Solar Reflectance Index (SRI), calculated as specified by ASTM E1980-01, may be used as an alternative to thermal emittance and 3-year aged solar reflectance when complying with the requirements of Sections 141, 142, 143(a)1, 149(b)1B, 151(f)12, 152(b)1H or 152(b)2 of Title 24, Part 6. SRI calculations shall be based on moderate wind velocity of 2-6 meters per second. The SRI shall be calculated based on the 3-year aged reflectance value of the roofing products.

A6.205.3.9.4 Liquid applied roof coatings applied to low-sloped roofs in the field as the top surface of a roof covering shall:

2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A6.1-7

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

A6.205.3.9.4.1 Be applied across the entire roof surface to meet the dry mil thickness or coverage recommended by the coating manufacturer, taking into consideration the substrate on which the coating is applied, and

§ 140.1 High relevance — show source text

(i) Roofing products solar reflectance and thermal emittance.

In order to meet the requirements of Sections 140.1, 140.2, 140.3(a)1, 141.0(b)2B, 150.1(c)11, 150.2(b)1I or 150.2(b)2, a roofing product’s thermal emittance and an aged solar reflectance shall be certified and labeled according to the requirements of Section 10-113.

Exception 1 to Section 110.8(i)1: Roofing products that are not certified according to Section 10-113 shall assume the following default aged solar reflectance/thermal emittance values: A. For asphalt shingles: 0.08/0.75 B. For all other roofing products: 0.10/0.75 2. If CRRC testing for an aged solar-reflectance is not available for roofing product, the aged values shall be derived from the CRRC initial values 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 110.8-B.

TABLE 110.8-B—VALUES OF SOILING RESISTANCE β BY PRODUCT TYPE	Col2	Col3
PRODUCT TYPE	CRRC PRODUCT CATEGORY	β
Field-Applied coating	Field-Applied coating	0.65
Other	Not a field-applied coating	0.70

Solar Reflectance Index (SRI), calculated as specified by ASTM E1980-11(2019), may be used as an alternative to thermal emittance and an aged solar reflectance when complying with the requirements of Sections 140.2, 140.3(a)1, 141.0(b)2B, 150.1(c)11, 150.2(b)1I or 150.2(b)2. SRI calculations shall be based on approach I from Section 6.1.1 of ASTM E1980-11 (2019) using only Equations 1 and 3 and a moderate wind velocity of 2–6 meters per second. The SRI shall be calculated based on the aged solar reflectance value of the roofing products.
Liquid applied roof coatings applied to low-sloped roofs in the field as the top surface of a roof covering shall: A. Be applied across the entire roof surface to meet the dry mil thickness or coverage recommended by the coating manufacturer, taking into consideration the substrate on which the coating is applied; and B. Meet the minimum performance requirements listed in Table 110.8-C or the minimum performance requirements of ASTM C836, D3468, D6083 or D6694, whichever are appropriate to the coating material. Exception 1 to Section 110.8(i)4B: Aluminum- pigmented asphalt roof coatings shall meet the requirements of ASTM D2824 and be installed as specified by ASTM D3805. Exception 2 to Section 110.8(i)4B: Cement- based roof coatings shall contain a minimum of 20 percent cement and shall meet the requirements of ASTM C1583, ASTM D822 and ASTM D5870.

(j) Radiant barrier. A radiant barrier shall have an emittance of 0.05 or less, tested in accordance with ASTM C1371 or ASTM E408, and shall be certified to the Department of Consumer Affairs as required by Title 24, Part 12, Chapter 12-13, Standards for Insulating Material.

§ 205.3.7.1 High relevance — show source text
Horizontal insulation from the outside
edge of the vertical insulation extending 4 feet toward the center of the
slab in a direction normal to the outside of the building in plan view.|1 – 15|5| |Between heated slab
and outside founda-
tion wall|Vertical and
Horizontal|Vertical insulation from top of slab at inside edge of outside wall down to
the top of the horizontal insulation. Horizontal insulation from the outside
edge of the vertical insulation extending 4 feet toward the center of the
slab in a direction normal to the outside of the building in plan view.|16|10 vertical
and 7
horizontal|

A6.205.3.7.1 Insulation materials in ground contact must:

A6.205.3.7.1.1 Comply with the certification requirements of Section A6.205.3.1; and

A6.205.3.7.1.2 Have a water absorption rate for the insulation material alone without facings that is no greater than 0.3 percent when tested in accordance with Test Method A – 24 Hour-Immersion of ASTM C272.

A6.205.3.7.2 Insulation installation must:

A6.205.3.7.2.1 Cover the insulation with a solid guard that protects against damage from ultraviolet radiation, moisture, landscaping operation, equipment maintenance and wind; and

A6.205.3.7.2.2 Include a rigid plate, which penetrates the slab and blocks the insulation from acting as a conduit for insects from the ground to the structure above the foundation.

A6.205.3.8 Wet insulation systems. When insulation is installed on roofs above the roofing membrane or layer used to seal the roof from water penetration, the effective R-value of the insulation shall be as specified in Reference Joint Appendix JA4 of the California Energy Commission 2008 Building Energy Efficiency Standards for Residential and Nonresidential Buildings.

A6.205.3.9 Roofing products solar reflectance and thermal emittance.

A6.205.3.9.1 In order to meet the requirements of Sections 141, 142, 143(a)1, 149(b)1B, 151(f)12, 152(b)1H or 152(b)2 of Title 24, Part 6, a roofing product’s thermal emittance and 3-year aged solar reflectance shall be certified and labeled according to the requirements of Section 10-113 of Title 24, Part 1.

Exception: Roofing products that are not certified according to Section 10-113 of Title 24, Part 1 shall assume the following default aged reflectance/emittance values:

A6.205.3.9.1.1 For asphalt shingles, 0.08/0.75

A6.205.3.9.1.2 For all other roofing products, 0.10/ 0.75
§ 106.2.3 High relevance — show source text
A4.106.2.3 Topsoil protection. Topsoil shall be protected or saved for reuse as specified in this section.

Tier 1. Displaced topsoil shall be stockpiled for reuse in a designated area and covered or protected from erosion.

Note: Protection from erosion includes covering with tarps, straw, mulch, chipped wood, vegetative cover or other means acceptable to the enforcing agency to protect the topsoil for later use.

Tier 2. The construction area shall be identified and delineated by fencing or flagging to limit construction activity to the construction area. Heavy equipment or vehicle traffic and material storage outside the construction area shall be limited to areas that are planned to be paved.

A4.106.3 Landscape design. Postconstruction landscape designs shall accomplish one or more of the following:
1. Areas disrupted during construction are restored to be consistent with native vegetation species and patterns.
2. Utilize at least 75 percent native California or drought tolerant plant and tree species appropriate for the climate zone region.
A4.106.4 Water permeable surfaces. Permeable paving is utilized for the parking, walking or patio surfaces in compliance with the following.

Tier 1. Not less than 20 percent of the total parking, walking or patio surfaces shall be permeable.

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APPENDIX A4 — RESIDENTIAL VOLUNTARY MEASURES

Tier 2. Not less than 30 percent of the total parking, walking or patio surfaces shall be permeable.

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.

§ 140.1 High relevance — show source text

Insulation may stop at the top of the footing where this
is less than the required depth. For below grade slabs, vertical insulation shall
be extended from the top of the foundation wall to the bottom of the
foundation (or the top of the footing) or to the frost line, whichever is greater.|16|10| |Between heated
slab and outside
foundation wall|Vertical and
horizontal|Vertical insulation from top of slab at inside edge of outside wall down to
the top of the horizontal insulation. Horizontal insulation from the outside
edge of the vertical insulation extending 4 feet toward the center of the slab
in a direction normal to the outside of the building in plan view.|1–15|5| |Between heated
slab and outside
foundation wall|Vertical and
horizontal|Vertical insulation from top of slab at inside edge of outside wall down to
the top of the horizontal insulation. Horizontal insulation from the outside
edge of the vertical insulation extending 4 feet toward the center of the slab
in a direction normal to the outside of the building in plan view.|16|10 vertical
and
7 horizontal|

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

(h) Wet insulation systems. When insulation is installed on roofs above the roofing membrane or layer used to seal the roof from water penetration, the effective R -value of the insulation shall be as specified in Reference Joint Appendix JA4.

(i) Roofing products solar reflectance and thermal emittance.

In order to meet the requirements of Sections 140.1, 140.2, 140.3(a)1, 141.0(b)2B, 150.1(c)11, 150.2(b)1I or 150.2(b)2, a roofing product’s thermal emittance and an aged solar reflectance shall be certified and labeled according to the requirements of Section 10-113.

TABLE 110.8-B—VALUES OF SOILING RESISTANCE β BY PRODUCT TYPE	Col2	Col3
PRODUCT TYPE	CRRC PRODUCT CATEGORY	β
Field-Applied coating	Field-Applied coating	0.65
Other	Not a field-applied coating	0.70

§ 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

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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

§ 106.5 High relevance — show source text

Exceptions:

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.
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:

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.
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.

§ 205.3.9.2 High relevance — show source text

A6.205.3.9.2 If CRRC testing for 3-year aged reflectance is not available for any roofing products, the 3-year aged value shall be derived from the CRRC initial value using the equation R aged = [0.2 + 0.7[ρ initial –0.2], where ρ initial = the initial Solar Reflectance. A6.205.3.9.3 Solar Reflectance Index (SRI), calculated as specified by ASTM E1980-01, may be used as an alternative to thermal emittance and 3-year aged solar reflectance when complying with the requirements of Sections 141, 142, 143(a)1, 149(b)1B, 151(f)12, 152(b)1H or 152(b)2 of Title 24, Part 6. SRI calculations shall be based on moderate wind velocity of 2-6 meters per second. The SRI shall be calculated based on the 3-year aged reflectance value of the roofing products.

A6.205.3.9.4 Liquid applied roof coatings applied to low-sloped roofs in the field as the top surface of a roof covering shall:

2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A6.1-7

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

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

A6.205.3.9.4.1 Be applied across the entire roof surface to meet the dry mil thickness or coverage recommended by the coating manufacturer, taking into consideration the substrate on which the coating is applied, and

A6.205.3.9.4.2 Meet the minimum performance requirements listed in Table A6.205.3-B or the minimum performance requirements of ASTM C836, D3468, D6083 or D6694, whichever are appropriate to the coating material.

Exceptions:

Aluminum-pigmented asphalt roof coatings shall meet the requirements of ASTM D2824 or ASTM D6848 and be installed as specified by ASTM D3805.
Cement-based roof coatings shall contain a minimum of 20 percent cement and shall meet the requirements of ASTM C1583, ASTM D822 and ASTM D5870.

TABLE A6.205.3-B—MINIMUM PERFORMANCE REQUIREMENTS FOR LIQUID APPLIED ROOF COATINGS	Col2	Col3
PHYSICAL PROPERTY	ASTM TEST PROCEDURE	REQUIREMENT
Initial percent elongation (break)	D2370	Minimum 200 percent 73ºF (23ºC)
Initial percent elongation (break) OR Initial flexibility	D2370 D522, Test B	Minimum 60 percent 0ºF (-18ºC) Minimum pass 1″ mandrel 0ºF (-18ºC)
Initial tensile strength (maximum stress)	D2370	Minimum 100 psi (1.38 Mpa) 73ºF (23ºC)
Initial tensile strength (maximum stress) OR Initial flexibility	D2370 D522, Test B	Minimum 200 psi (2.

§ 106.11.2 High relevance — show source text

APPENDIX A5-8 2025 CALIFORNIA GREEN BUILDING STANDARDS CODE

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

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:

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.
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

§ 10-113. High 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, 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

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

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.

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

§ 106.11.2.3 High 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.

2025 CALIFORNIA GREEN BUILDING STANDARDS CODE APPENDIX A5-9

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

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 .

§ 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.

Frequently asked questions

What if a manufacturer provides only CRRC initial values?

If only a CRRC initial reflectance is available and no CRRC 3‑year aged value exists, derive the aged value using the code equation ρaged = 0.2 + 0.7 × (ρinitial − 0.2) (use the β value per product type where required). § A6.205.3.9.2 and Table 110.8‑B.

Can I use SRI instead of aged reflectance and emittance?

Yes. The SRI may be used as an alternative compliance path if calculated per ASTM E1980 and using the 3‑year aged reflectance as the reflectance input; the code requires specific approach and wind assumptions. § A6.205.3.9.3 and § 110.8(i)3.

What happens if the product is not certified under § 10‑113?

You must use the default aged values specified by the code (asphalt shingles 0.08/0.75; all other products 0.10/0.75) or follow the derivation rule if CRRC initial values exist. § A6.205.3.9.1 (Exception) and § A6.205.3.9.2.

Are roof areas under PV panels exempt?

Yes — in many Title 24 sections, roof areas covered by building‑integrated PV or thermal panels are excluded from the aged reflectance/emittance or SRI requirements where specifically noted (see exceptions in § 150.2 and related sections).

Where can I find the exact label/certification format required by § 10‑113?

The provided files reference § 10‑113 as the controlling certification/labeling procedure, but the full § 10‑113 text was not included in your uploaded documents. You should consult Title 24, Part 1 § 10‑113 directly (or the Energy Commission guidance) for the precise label fields and submission process.

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