HOMES - Temporary coating may help protect homes from wildfires

When a forest or brushland wildfire threatens to engulf nearby neighborhoods, some homeowners might opt to quickly spray the entire exterior of their house with a temporary fire-retardant coating. Now, a team of Agricultural Research Service scientists in California—one of America's most wildfire-prone states—has shown that an experimental fire-retardant gel made of sodium bentonite clay, cornstarch, and water may offer better, more affordable protection than gels made from other compounds.

http://phys.org/news/2013-09-temporary-coating-homes-wildfires.htm