2008 Efficiency Standards for Residential and Non-Residential Buildings

Effective January 2010, California Building Code Title 24.  Includes cool roof prescriptive requirements as follows:

  • Low-sloped roofs: agedSR >0.55 and TE >0.75, or SRI >64
  • Steep-sloped, weight <5 lbs/ft2: aged SR >0.20 and TE >0.75, or SRI >16
  • Steep-sloped, weight >5 lbs/ft2: aged SR >0.15 and TE >0.75, or SRI >10
Suggested citation or credit:

CEC-400-2008-001-CMF

Source: California Energy Commission

Publication Date: December 2008

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