New Title-24 Cool Roof Requirements – Energy Code Works
https://energycode.com/new-title-24-cool-roof-requirements/
Cool roof requirements are triggered when either 50 percent of the roof area or more than 1,000 sq. ft., whichever is less is replaced. The cool roof requirements for re-roofs are the same as for new construction and use the same values from Table 151-D noted above. However there are exceptions which can be used to offset the cool roof requirement.
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