Roof Tile Title 24 Aged Solar Reflectance Climate Zone 9

Tile roof on single family home.

Roof tile title 24 aged solar reflectance climate zone 9. Homes in zones 10 15 must meet cool roof standards. In our example we are using tile roofing with a weight greater than 5 lb sq. California building climate zone map. Title 24 cool roof regulations are in effect for california homes when.

The title 24 standards do not require a cool roof on a residence when energy compliance is achieved using the performance method. On a steep slope roof greater than 2 12 and for climate zone 8 the cool roof requirements are an aged solar reflectance of 0 15 and a thermal emittance of 0 75. Aged solar reflectance and emittance values listed within the crrc rated products. Additionally the code requires an area of the roof to be solar ready 250 square feet within 110 to 270 north with no roof penetrations or shade.

Timberline hd reflector series plus shingles are rated by. Many of the code requirements are climate zone cz specific. Any replacement recovering or recoating of the exterior surface of the existing roof where greater than 50 of the existing roof surface area or 2 000. To see which climate zone your project is in and the requirements associated with your building structure visit the cec s website.

Environmental protection agency s epa s energy star program california s title 24 and the leadership in energy and environmental design leed rating system qualify a cool roof in terms of solar reflectance sr and thermal emittance te or solar reflective index sri. Timberline hd reflector series plus shingles meet green building standards code of los angeles county for residential buildings. The higher the solar reflectance the better the more heat is reflected from the roofing material. That is your cool roof specification for your roofing product.

Aged solar reflectance index of 20 or a minimum sri a sri of 16 requirements vary by zone depending on the building and the climate method. See code for full details. 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. Aged solar reflectance thermal emittance specific aged solar reflectance and thermal emittance values must be met or exceeded for some climate zones and roof types see page 2.

California energy commission 8 6 9 16 10 building climate zones county boundary 0 50 100 200. Timberline hd reflector series plus shingles can be used to comply with 2016 title 24 part 6 cool roof requirements of the california code of regulations. A comparison between the way u s. The roofing project is in an affected california climate zone.