The california building commission adopted the wildland urban interface wui codes in late 2005.
California state fire marshal wui approved siding.
Lumber products used as siding decking or soffits in exteriors must pass state mandated fire tests.
California fire standards and exterior wood products.
These new codes include provisions for ignition resistant construction standards in the wildland urban interface.
When viewing decking information in the wui products handbook or other location be sure to note how the product complied.
Sfm standard 12 7a 1 exterior wall siding and sheathing.
Wwpa has prepared a tech note to assist those making and selling lumber products in california that may be used in exterior applications such as siding.
A listing of most of the decking products that comply with the california requirements is maintained in a free online database called the building material listing bml formerly known as the wui product handbook and is maintained on the office of the state fire marshal osfm web site.
Lp smartside siding helps meet cal fire wui codes when paired with either gypsum board or lp flameblock fire rated.
The third way to comply is to pass the office of the state fire marshal standard sfm 12 7a 1 for exterior wall siding and sheathing.
This is the method used for other combustible siding products for example untreated wood lap and panelized siding vinyl or other plastic or wood plastic composite product.
For products to be used in the wildland urban interface wui there are some regulations that required building products to comply with specific standards.
Starting january 2008 the new 2007 california building code cbc becomes effective.
To date the california office of the state fire marshal has approved and listed multiple applications of lp s products for use in wui areas proving that wood based building materials can be part of a wui compliant solution.
The state fire marshal standards for exterior wildfire exposure protection listed below and as referenced in this chapter are located in the california referenced standards code part 12 and chapter 35 of this code.
For a current list of deck products that comply to chapter 7a provisions go the california state fire marshal s wildfire and hazards web page and click on new products handbook.
California building code chapter 7a requires building construction used in the exterior of buildings within wildland urban interface wui fire areas to be fire resistive construction.
The updated fire hazard severity zones will be used by building officials to.
Wui approved our product is approved for both siding eave applications in high fire zones throughout the state of california 100 redwood redwood has natural resistance to rot decay pests fire which helps create superior performance without added chemicals.
