With the world’s fifth-largest economy, California has the ability to influence entire industries through public policy. The state has set the bar for energy-efficient building design since establishing an energy code in 1978 in response to a legislative mandate that the state reduce its energy consumption. The energy code is Part 6 of the state’s Building Standards Code, also known by its regulatory name: Title 24.  

With the state’s move toward higher energy efficiency standards, architects and designers face a special challenge of balancing energy efficiency with fire safety when it comes to designing homes, apartment buildings, retail centers and commercial spaces such as hospitals, schools and libraries. 

Want to learn more?

Earn continuing education credits with our course “Balancing Fire and Energy Code Requirements in Exterior Walls.

Designing With Wildfire in Mind

California also leads the world in establishing regulations governing construction for wildfire-prone areas. With climate change amplifying the intensity and size of wildfires, locations close to wildlands, known as wildland–urban interface (WUI) zones, are increasingly seeing fires spread through wind-blown embers, radiant heat and direct flame contact with landscaping, fences and structures. Prioritizing fire safety and WUI considerations has never been more important than it is today.

WUI California Fire

ROCKWOOL CAL FIRE Listing Products

The California Office of the State Fire Marshal building materials listing includes products tested by OSFM-accredited laboratories to help building professionals source reliable products for projects in WUI zones. Learn more about the listing and its requirements.

The building materials listing includes four ROCKWOOL stone wool insulation products, the only building insulation products in the listing. Each of these products has been independently tested in accordance with ASTM E84 (for flame spread and smoke development) and ASTM E136 (for noncombustibility) by an OSFM-accredited laboratory and is rated a zero on the flame spread index and a zero on the smoke developed index.

California Los Angeles Skyline WUI Zone