During an extreme wildfire, most homes are not lost to the wall of flame. They are lost to embers that travel ahead of the fire and find a weak spot: a needle-filled gutter, a woodpile against the wall, a conifer branch touching the roof. FireSmart is the practice of removing those weak spots, and it is organized around the Home Ignition Zone.
Zone 1: The non-combustible zone (0 to 1.5m)
The first 1.5 metres out from the wall should carry nothing that can catch an ember. That means no woodpiles, no combustible mulch, no shrubs against the siding, and no conifer branches overhanging this band. Gravel or hardscaping here gives an ember nowhere to land.
Zone 2: The intermediate zone (1.5 to 10m)
From 1.5 to 10 metres, the goal is to break up fuel so fire cannot build momentum toward the house. Conifers are thinned and spaced, lower branches are removed so a ground fire cannot ladder up into the canopy, and dead material is cleared. You keep a landscaped yard, it is just one that fire cannot run through.
Zone 3: The extended zone (10 to 30m and beyond)
Past 10 metres, the aim is to reduce the intensity of an approaching fire and stop crown fire from jumping tree to tree. Selective thinning and maintaining horizontal spacing between crowns disrupts the path a fire would otherwise take straight to your property.
A FireSmart assessment walks your property zone by zone and turns it into a prioritized plan you can act on over one season or several. If you want to know where your home actually stands, that is the place to start.