// CODE SNIPPET
A5.205.3.9 Roofing Products Solar Reflectance and Thermal Emittance
Go To Full Code Chapter
A5.205.3.9.1
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:
A5.205.3.9.1.1
For asphalt shingles, 0.08/0.75
A5.205.3.9.1.2
For all other roofing products, 0.10/0.75
A5.205.3.9.2
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 Raged = [0.2 + 0.7[ρinitial—0.2], where ρinitial = the initial Solar Reflectance.
A5.205.3.9.3
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.
A5.205.3.9.4
Liquid applied roof coatings applied to low-sloped roofs in the field as the top surface of a roof covering shall:
A5.205.3.9.4.1
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
A5.205.3.9.4.2
Meet the minimum performance requirements listed in Table A5.205.3-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.
Upcodes Diagrams
Related Code Sections
A5.205.3.9 — Voluntary Standards for Health Facilities [OSHPD 1, 2 & 4], Roofing Products Solar Reflectance and Thermal Emittance
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 ...
A5.205.3.9 Voluntary Standards for Health Facilities [OSHPD 1, 2 & 4], Roofing Products Solar Reflectance and Thermal Emittance
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 ...
A5.205.3.9 — Voluntary Standards for Health Facilities [OSHPD 1, 2 & 4], Roofing Products Solar Reflectance and Thermal Emittance
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 ...
A5.205.3.9.3 Voluntary Standards for Health Facilities [OSHPD 1, 2 & 4],
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 ...
A5.205.3.9.2 — Voluntary Standards for Health Facilities [OSHPD 1, 2 & 4],
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 ...