2013 California Title 24, Part 6 Requirements

Understanding How It Affects You

California’s Title 24 energy standards address the energy efficiency of new construction of, and additions and alterations to, homes and commercial buildings. Since buildings are one of the major contributors to electricity demand, the goal of Title 24 is to reduce energy consumption in California for its energy future.

Effective July 1, 2014, the Title 24 Roofing Code establishes new requirements to promote the installation of “cool roofs” in low-rise residential steep slope construction. Cool roofs consist of materials that reflect the sun’s energy from the roof surface, as well as have high emissivity, allowing them to emit infrared energy. Thus, significantly reducing energy costs and urban heat islands.

Northern California Roofing Company is committed to adhering to the Energy Commissions energy standards by providing our customers with cool roof concrete tile solutions that not only meet the new requirements, but deliver the beauty, durability and value that you’ve come to expect.

How does Title 24 Impact You?


All new permits and buildings must comply


Must plan for the new energy efficiency requirements


Can differentiate by knowing the new code

Cool Roof


California is divided into 16 climate zones. Buildings located in Climate Zones 10-15 need to meet, at a minimum, the following requirement as outlined by the California Energy Commission (CEC).

Aged Solar Reflectance

Index of 16

Requirements vary by zone, depending on the building and the climate method. To see which climate zone your project is in and the requirements associated with your building structure, visit the CEC’s website.

Roofing at It's Best

Re-Roof & Alterations

In Climate Zones 10-15, when 50% or more of the roof is being replaced, the Prescriptive Method must be used to meet cool roof requirements, except when:

Home addition has less than 300 square feet of roofing

Minimum R38 attic insulation is used, provided

Minimum R4 above deck insulation is used

There is no ductwork in attic or duct insulation meets new requirements

High profile tile is used (rise to width ratio of 1:5 when installed)

Elevated battens are used



For new construction, the Performance Method — where you use the California Energy Commissions approved software to demonstrate compliance for the entire building — is the preferred path.

This ensures:

Any profile or color can be used as long as the energy budget is met.