Fresno falls in California Climate Zone 13, so Title 24 mandates reflective cool-roof products on most new nonresidential roofs and many residential roof replacements to cut peak cooling load.
California Building Energy Efficiency Standards (Title 24, Part 6) require minimum solar reflectance and thermal emittance values for roofs in Fresno's hot climate zone. Low-slope nonresidential roofs typically need a three-year aged reflectance of 0.63 or better. Residential reroofs above a defined area also trigger cool-roof requirements unless the structure qualifies for an exception. Fresno building inspectors verify product CRRC ratings on the Title 24 compliance forms. The Fresno Climate Action Plan reinforces the standard for municipal buildings, and PG&E rebates can offset upgrade costs.
Roofers installing noncompliant products fail inspection, must replace materials, and may face contractor license discipline through California CSLB enforcement.
See how Fresno's cool roof requirements rules stack up against other locations.
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