5 Wildfire Myths I Hear From Homeowners All the Time — And What's Actually True
I hear a handful of the same assumptions over and over when I talk to homeowners about wildfire prep — things people genuinely believe are true, often because they sound reasonable, or because that's just what everyone around them has always said. Some of these came from conversations I had myself before the 2018 Woolsey Fire burned through the hills near my home in West Hills. After that, I went through CERT training and started building wildfire defense equipment, and a lot of what I learned directly contradicted what I used to assume. Here are the ones I hear most, and what's actually true instead.
The Myths — And What's Actually True
- Myth: "If I can't see flames, I'm not in danger yet." Wind-driven embers can travel well ahead of a fire's visible edge — sometimes a mile or more — and land on a roof, in a gutter, or against a wall with no flame front anywhere in sight. Research into how homes actually ignite during wildfires (notably the work of U.S. Forest Service researcher Jack Cohen) found that it's embers and small flame contact landing on or near a structure — not a wall of fire sweeping through — that account for most home ignitions. By the time flames are visible from your yard, embers may already have been falling on your property for a while.
- Myth: "The fire department will defend my house." In a fast-moving wildfire, fire agencies' first priority is evacuating people, not posting a crew at every individual home. There usually aren't enough engines to cover a neighborhood door to door, and in a severe wind event, crews may not even be able to safely enter an area until conditions ease. The equipment and training sitting in your garage are what's actually in place during the hours before help can get to you — if it can get to you at all.
- Myth: "Hosing down my roof and yard right before the fire arrives helps." In the low humidity and high wind that drive most Southern California wildfires, water on a roof or lawn can evaporate in minutes — sometimes before the fire is anywhere close. That's water and time you don't get back. The more useful target is embers as they land, not pre-wetting surfaces on the assumption they'll still be wet when it matters.
- Myth: "A regular garden hose is good enough if things get bad." Garden hoses use a different thread standard than fire hydrants, run at far lower flow than a hydrant-fed line, and simply weren't built to knock down a spot fire or a cluster of embers at any real distance. If a fire actually reaches your property, a thin stream meant for watering flower beds is not the tool for the job.
- Myth: "My yard is cleared, so my home is basically fireproof now." Defensible space — including the five feet closest to your house, sometimes called Zone 0 — is genuinely effective at denying embers a place to catch on the ground. But it doesn't address vents, gutters, roofing material, or an open window, and it says nothing about whether your neighbor's property is equally clear. It lowers the odds of ignition; it isn't a guarantee.
What You Need to Know
- Embers are the main threat, not just the fire's leading edge. Plan and equip for embers landing on your property well before — or even without — a visible flame front nearby.
- Don't count on a crew showing up at your door. Treat your own equipment and training as the plan, not a backup to one.
- Save your water for embers, not pre-wetting. Wetting roofs or yards ahead of time rarely holds up in wind-driven, low-humidity conditions.
- Match your equipment to the actual threat. A hose, valve, wrench and nozzle built for hydrant pressure and thread standards do a job a garden hose can't.
- Defensible space and equipment are both necessary — neither is sufficient alone. Clear your five feet and have a working hydrant kit; don't treat either as the finish line.
- None of this replaces an evacuation order. If authorities tell you to go, go. Everything above is for the window before that order comes, not a reason to stay past it.
Most of these myths aren't dangerous because they're obviously wrong — they're dangerous because they sound reasonable until you've actually sat with how wildfires behave. The fix isn't complicated: know that embers are the real threat, keep your five feet clear, and have equipment on hand that's actually built for the job, connected and tested before you need it.
Sherwin Ross is the founder of Ace Fire Defense, based in West Hills, CA. After the 2018 Woolsey Fire, he became CERT-trained and started building wildfire defense equipment for homeowners.