As of january 1 2010 the california energy commission s updated title 24 building energy efficiency standards for residential and non residential roofing are now in force otherwise know as cool roof.
Title 24 roofing requirements residential.
While title 24 applies to all residential and non residential buildings in the state the specific requirements for roofs are dependent on geographic location building use residential non residential type of construction new construction additio n or re.
California s building energy efficiency standards commonly known as title 24 are updated on an approximately three year cycle.
The new title 24 codes allow for substitutions or alternate ways of complying with title 24 energy codes without having a roof with a sri of 16.
California s building energy efficiency standards for residential and nonresidential buildings title 24 part 6 contains requirements for the thermal emittance three year aged reflectance and solar reflectance index sri of roofing materials used in new construction and re roofing projects.
The new cool roof requirements affect new construction significant repairs of existing roofs re roofing plus additions and alterations of existing buildings and homes.
Lets say you want to put on a composition shingle roof and the color is a dark black or charcoal.
Cool roof shingles roofing products with high solar reflectance and thermal emittance are referred to as cool roof which is the outer layer or exterior surface of a roof.