Title 24
California has an ever changing requirement regarding energy efficiency called Title 24. This mandates what is required for a reflective roof system. Commercial low slope buildings that have conditioned space must comply. Residential buildings have various requirements depending upon many factors. Talk to your estimator about Title 24.
Should your building be required to comply, there are several options available in terms of roofing. More and more options will be available as the manufacturers come out with more products.