The following language is adopted as a new Section 1515:
"1515. SOLAR REFLECTANCE
1515.1 Scope.
Roof coverings shall comply with the solar reflectance requirements in Section 1515.2.
Exceptions:
1. Walking surfaces of occupiable rooftops.
2. Vegetative roofs, roof gardens and landscaped roofs.
3. Photovoltaic and solar thermal equipment.
1515.2 Solar reflectance.
All roof coverings shall have a minimum solar reflectance as specified in Sections 1515.2.1 or 1515.2.2 as tested in accordance with ASTM C1549, ASTM E903, ASTM E1918 or CRRC-S100.
1515.2.1 Low-sloped roofs.
Roof coverings on low-sloped roofs shall have an initial reflectance value of 0.72 or a three-year-aged solar reflectance value of 0.5 or greater.
Exceptions:
1. Where more than 50 percent of the roof area is a vegetative roof or roof garden, the remainder of the roof area shall have a three-year-aged solar reflectance value of 0.3 or greater.
2. Roofs with a minimum of 15 pounds per square foot (0.72 kN/m
2
) of ballast installed over the entire roof area to resist wind uplift shall have a three-year-aged solar reflectance value of 0.3 or greater.
1515.2.2 Other than low-sloped roofs.
Roof coverings on other than low-sloped roofs shall have an initial reflectance value of 0.15 or greater.
Exceptions:
1. Roof coverings installed with a slope of 5:12 (41 percent) or greater.
2. Historic buildings."
(Amend Coun. J. 9-21-22, p. 52080, Art. II, § 6)