Tahoe RCD just finished a peer reviewed Wildfire Home Retrofit Guide: How to Harden Homes Against Wildfire. This project was funded by Cal Fire in partnership with University of Nevada, Reno Extension, University of California Cooperative Extension, and Living with Fire.
This Guide includes specific recommendations for how to retrofit existing components of a home to withstand wildfre. Each section contains an explanation of how the component is vulnerable to wildfire and what can be done to improve that component.
Read the Wildfire Home Retrofit Guide