Residential Roofing Requirements

These requirements apply to nonresidential high rise residential and low rise residential buildings across california s 16 climate zones.

Residential roofing requirements.

Fire retardant requirements are maintained. Roofing requirements for the design materials construction and quality of roof assemblies for residences are listed in the california residential code chapter 9. Roofing materials shall comply with the solar reflectance and thermal emittance requirements of this section. The roof sheathing is solid and structurally sound.

When drywall is used as a base for tile or wall panels for tub shower or water closed. The entire roof covering of every existing structure where more than 50 percent of the total roof area is replaced within any one year period the entire roof covering of every new structure and any roof covering applied in the alteration repair or replacement of the roof of every existing structure shall be a fire retardant roof covering that is at least class a. Attached garage stairways. The ages solar reflectance and thermal emittance requirements will vary depending on the slope of the roof climate zone and the density of the roofing product.

Get more with premiumaccess start your 14 day trial now. The requirements apply to new construction and to retrofits or additions that replace or re coat at least 2 000 ft 2 of roof space for nonresidential buildings and 1 000 ft 2 of roof space for residential buildings or 50 percent or more of the roof surface whichever is larger. Where building integrated photovoltaics bipv are installed permits issued prior to january 1 2015 for the replacement of an existing roof with asphalt roof shingles or asphalt compostion roll roofing. All roofing products must be certified and labeled according to the cool roof rating council crrc to comply with the standards.

In residential design interior lath and plaster drywall and wood paneling or siding are most commonly used. Roof replacement when the roof area being replaced is equal to or less than 50 percent of the total roof area. Roof drains and drainage are sufficient to prevent the accumulation of water. Ladwp rebates ladwp s cool roof rebates are available to single family and multi family residential customers and are part of the consumer.

All materials used in a roof assembly must be both weather and fire safe as well as compatible with each other. Existing insulation is not water soaked.