IBHS research finds ember-resistant buffer zones halve wildfire ignition risk for homes

Creating a buffer zone around homes by removing combustible materials and vegetation can significantly reduce the risk of wildfire damage, according to research from the Insurance Institute for Business & Home Safety (IBHS) and ZestyAI. Their 2021 study found that clearing vegetation from the immediate perimeter of a home can nearly double the structure’s chances of surviving a wildfire.

Hawks, a representative from IBHS, highlighted the impact of everyday items on wildfire vulnerability: “Time and time again in our post-fire analysis of the Los Angeles County wildfires, we saw the damage done by combustible items like plastic garbage cans right up against a home. Something as simple as moving these at least five feet away could be the game-changer for your home surviving a wildfire.”

To help homeowners understand how to reduce wildfire risks, IBHS has launched a new 90-minute online, self-paced course. The course covers the science behind wildfires and provides research-based steps for home protection. Hawks emphasized the importance of accurate information, stating, “We want homeowners to have accurate information based on science. Unfortunately, some public conversation has caused great confusion, particularly around the idea that some trees actually help catch embers or certain plants don’t burn. The bottom line based on the latest research is this – a limited area that is completely noncombustible prevents ember ignition. And the good news is that it’s easy to create and maintain without reducing your home’s curb appeal.”

The online course features images from IBHS wildfire research, real-life examples of mitigation efforts, and detailed steps for homeowners. In addition to creating an ember-resistant buffer, IBHS recommends installing a Class A fire-rated roof, using ember-resistant vents, and ensuring at least six vertical inches of noncombustible material on exterior walls.

Hawks also referenced a 2024 landscape design contest by CSAA and UC Berkeley as a resource for homeowners. The contest provides designs that demonstrate how to create an ember-resistant zone while incorporating native trees, plants, flowers, and grass beyond the first five feet to maintain shade and privacy.

IBHS continues its mission to conduct scientific research aimed at strengthening homes, businesses, and communities against natural disasters.