01/12/2025
The devastation we are witnessing this week, due to the wildfires in Los Angeles, is heartbreaking. I know people are worried and wondering what they can do to prevent such destruction to their homes in the event of an external firestorm.
As disasters occur and vulnerabilities are discovered in the codes we use to build, the codes are amended.
Chapter 7A of the California Building Code is for homes and buildings that are located in a designated high wildfire zone. For us in the South Bay, the whole Palos Verdes Peninsula is designated as a high fire zone.
Any new construction will require the following items to be flame and ember resistant.
Most modern roofs are flame resistant since wood shakes have been eliminated as a roofing material years ago.
In my opinion, attic vents and tempered glass windows are key to preventing the intrusion of fire and wind blown embers into the attic and building envelope. Most of us have stucco as the exterior cladding and the newer cementious siding (looks like wood siding) are acceptable in the code.
Other items to consider upgrading when replacing any items are fire resistant wood or composite wood for decking and trellises, removing landscaping against the building and exterior ceiling materials being fire resistant.
These are only for exterior fires that start outside of the home. Building sprinklers are for the inside and are required for any new home or significant additions over 1000 square feet regardless of your fire zone designation.
Most all of the homes built in years past have attic vents with little to no protection from wind driven embers. These tiny embers land inside your attic and usually atop the insulation, where the fires can start. Upgrading your attic vents to prevent embers from entering is a good start. I worked on a home that was burned by a dead palm frond hitting the power lines and catching on fire. This occurred during the Santa Ana winds and the embers from the frond blew into the attic via the vents. While the damage was superficial and didnât change the integrity of the structure, the whole interior of the house was stripped out because of smoke and water damage. This was not in a high fire zone.
Just a PSA for anyone concerned about their home.