With fire season becoming a year-round reality, I’ve been looking into "Home Hardening" and realized most people (myself included) focus on clearing brush but forget the holes in their roof.
If you live in a WUI (Wildland-Urban Interface) zone, your attic is your biggest vulnerability. During a fire, wind-driven embers can travel over a mile and get sucked right into your house through standard vents.
The Dormer Vent Trap If you have traditional dormer vents (those little "eyebrows" on the roof), take a look at the mesh. Most older ones use 1/4-inch hardware cloth. That’s basically an open door for a glowing ember. Once an ember hits your dry attic insulation, the house is gone before the actual fire even reaches your street.
What to look for in "Fire-Safe" Vents:
Has anyone here done a full vent retrofit lately? Did you go with the Vulcan, Brandguard, or a different ember-resistant brand? Would love to hear about the install process and if your insurance gave you a discount for it.
If you live in a WUI (Wildland-Urban Interface) zone, your attic is your biggest vulnerability. During a fire, wind-driven embers can travel over a mile and get sucked right into your house through standard vents.
The Dormer Vent Trap If you have traditional dormer vents (those little "eyebrows" on the roof), take a look at the mesh. Most older ones use 1/4-inch hardware cloth. That’s basically an open door for a glowing ember. Once an ember hits your dry attic insulation, the house is gone before the actual fire even reaches your street.
What to look for in "Fire-Safe" Vents:
- WUI Compliance: Look for top roof vents that are ASTM E2886 certified. This means they’ve been tested specifically to block embers and direct flames.
- Mesh Size: You want 1/8-inch or smaller non-combustible mesh. It’s small enough to break down the heat of an ember so it dies before it gets inside.
- Intumescent Materials: Some high-end vents have material that literally swells up and seals the vent shut when it senses extreme heat.
- Metal > Plastic: This seems obvious, but plastic vents melt and create a giant hole for embers to pour into. Stick to galvanized steel or heavy aluminum.
Has anyone here done a full vent retrofit lately? Did you go with the Vulcan, Brandguard, or a different ember-resistant brand? Would love to hear about the install process and if your insurance gave you a discount for it.