Wildfire preparation for a roof is mostly about its openings. Embers reach a house through vents, gutters, eave gaps and debris, so the roof is checked for those points first, and the area around the wall is cleared as the owner decides.
Key takeaways
- Embers enter through openings, so vents and eaves are checked first.
- Gutters and the eave hold dry debris that an ember can catch.
- The 2024 Swawilla Fire burned about 53,000 acres across Ferry and Okanogan counties.
- The owner controls the ground around the house; the crew records what it sees.
The fire history that shapes the advice
Fires in this country have come close to houses, and the record shows it.
In 2024 the Swawilla Fire, a lightning-started fire, burned about 53,000 acres across Ferry and Okanogan counties. It destroyed two structures, forced evacuations in several communities, most notably Keller, and closed the Keller Ferry. In 2015 a fire of about 262 square miles burned between Republic and Nespelem, and no homes were reported lost in the Kettle Complex fires that week. In 2001 the Mount Leona Fire, a lightning-caused fire of about 4,800 to 6,100 acres, burned in the Kettle River Range.
These are the fires the sources record. They show that a fire can come through open country near a house, and that the roof and its openings are where the house can make the difference. The advice below is general practice for wildfire exposure, and it is shaped by that local history.
- 2024 Swawilla Fire, about 53,000 acres
- 2015 Kettle Complex fires, about 262 square miles
- 2001 Mount Leona Fire, about 4,800 to 6,100 acres
How an ember gets in
An ember enters at an opening where it can settle on something that will burn.
Embers travel ahead of a fire on the wind and settle on roofs, in gutters, in gaps at the eave and in vents. A vent without a fine mesh is an open door to the attic. A gutter full of needles is a bed of fuel. A gap at the roof edge or the soffit lets an ember go under the covering where it can smoulder unseen.
The attic is the most dangerous place for an ember to find fuel, because it is hidden and full of dry wood and insulation. A roof check therefore starts from the inside, where the openings show clearly.
- Vents without fine mesh
- Gutters full of needles and leaves
- Gaps at the eave and soffit
Vents and screens
Each vent should have a fine metal mesh that holds an ember and is seated on all sides.
The crew measures each vent and checks the mesh for tears, gaps and missing sections. A mesh that is torn at one corner stops doing its job, and a mesh that is loose at the frame lets an ember in around the edge. The replacement mesh is chosen for ember control and is seated against the frame on all sides.
Vents in gable ends and in the roof are checked the same way. The screen is read from inside the attic where that is safe, to confirm it is seated on the inside as well as the outside.
- Each vent measured and recorded
- Mesh checked for tears and loose seating
- Attic side checked where safe
Gutters, eaves and the debris line
The gutter and the eave hold the dry debris that a fire needs, so they are cleared and guarded where that is practical.
A gutter full of dry needles, leaves and seed is a fuel bed along the roof edge. The gutter is cleared after the autumn leaves fall, and a gutter guard is fitted where the debris builds fastest. A guard is a barrier, not a seal, so the gutter is still checked once a year.
The eave is checked for gaps between the fascia, the soffit and the roof edge. A gap is sealed with a suitable material, and the crew notes any gap it cannot seal from the roof side.
- Gutter cleared after autumn
- Guards where debris builds
- Eave gaps sealed or noted
The area around the wall
The ground and the stored material close to the wall are the owner's to clear, and the crew records what it sees.
Dry grass, shrubs and stacked wood against the wall under the eave give a fire a route to the house. A clear strip along the wall, with stored wood moved away from the eave, reduces that route. The crew does not clear land it does not own, but it notes the items it sees and the distance from the wall to each one.
The owner can decide how far to clear. The record shows the distances, and the owner can compare them with the list the next year.
- Clear strip along the wall
- Stored wood moved away from the eave
- Distances recorded for the owner
A yearly routine
A short check each year keeps the openings working through the fire season.
In the spring, before the fire season starts, the owner can check the vents for torn mesh, clear the gutter of winter debris and walk the strip along the wall. In the autumn, the gutter is cleared again after the leaves fall. The crew can make a yearly visit that records the change from one season to the next.
The owner keeps the list and the photographs with the house file. A roof that is checked each year is a roof whose openings are known, and that knowledge is the basis of the protection.
- Spring check of vents and strip
- Autumn gutter clearing
- Yearly record with photographs
Attic inspection and the openings from inside
The openings are easiest to read from the attic, and the inside check shows what the outside check can miss.
A vent can look sound from outside and still have a gap where the mesh meets the frame. An ember that gets past the outer edge can settle on the insulation or the wood behind it. The crew checks each opening from the attic where that is safe, to confirm the mesh is seated on the inside as well as the outside.
The attic also shows the insulation close to any vent, and the crew notes any place where insulation has been pushed against an opening, since that is fuel close to the entry point.
- Mesh seated on the inside as well as the outside
- Insulation close to vents noted
- Attic read with the owner present where possible
Chimneys, stove pipes and the spark
A chimney or stove pipe through the roof is a source of sparks as well as a joint to flash.
A wood stove or a furnace flue through the roof can throw sparks when the draft is strong, and the cap and the spark arrester at the top of the flue are the first defence. The crew checks the flashing and the cap, and it notes the spark arrester if one is fitted. The flue itself is a matter for a chimney professional, and the crew records what it sees and passes the note on.
Dry debris that collects around the chimney base is cleared, and the owner is told that the chimney and the stove need a separate yearly check.
- Cap and spark arrester checked
- Debris at chimney base cleared
- Flue left to a chimney professional
Recording the wildfire checks
The wildfire check is recorded on its own, so the owner can use it for insurance and for planning.
The record lists each opening by its position on the roof, its condition and the action taken. The owner can keep the record with the house file and show it to an insurer or a future buyer. The record does not state a fire rating, because the sources for this site do not give one, and it does not promise that a house will survive a fire.
The owner can use the record to plan the work across the seasons. The items that are open are listed with the date they were found, so the owner can see how long each one has been waiting.
- Openings listed by position
- Condition and action recorded
- No fire rating stated
Dry debris and the roof valleys
Valleys collect needles and leaves that dry out in summer, and they are checked as well as the gutters.
A valley carries water and debris from two slopes into one line. In a dry summer the debris in a valley dries and becomes an easy target for an ember. The valley is cleared of dry debris each autumn, and the crew checks the valley at each visit for a build-up that would hold water and fuel together.
Clearing a valley requires a safe position on the roof. The owner should not climb a steep valley alone, and the crew carries out the clearing from a safe access where needed.
- Valleys cleared each autumn
- Dry debris checked at each visit
- Clearing done from a safe access
Materials stored against the house
Firewood, building material and garden waste stored against the wall are a fuel source the owner controls.
A woodpile against the wall under the eave, a pile of building material near the house or a bin of dry garden waste is fuel within reach of an ember. The owner can move these to a distance from the wall and keep the strip clear. The crew notes any stored material it sees and records the distance from the wall.
The owner decides how far to move each item. The record gives the distance so the owner can see the change from one visit to the next.
- Woodpile moved from the wall
- Garden waste kept away from the house
- Distances recorded for each visit
Clearance and the ember path
An ember path runs from the open ground to the house wall, and each step along it is a point the owner can change.
An ember that lands on open ground near a house is carried by the wind to the nearest fuel. The path runs through dry grass, through shrubs, along a fence line and up to the wall. Each step along that path is a point where the owner can break the chain by clearing the fuel, moving the stack or cutting back the shrub. The crew describes the path it sees from the roof and the ground, and the owner decides which steps to change.
The path is not fixed. A new shed, a woodpile or a change in the grass can open a new route, so the crew checks the path again at each visit and records any change.
- Path from open ground to the wall
- Each step a point to change
- Path checked again at each visit
Frequently asked questions
Do I need to replace the whole roof for wildfire?
Not usually. Most of the protection is in the vents, the eave, the gutters and the area around the house. The crew says whether anything more is needed.
What mesh is right for vents?
The crew measures the openings and chooses a fine metal mesh suited to ember control. The exact size is recorded on the job sheet.
Does the county require wildfire measures?
The county rules recorded for this site cover snow load, wind and the ice barrier. This guide describes general practice for wildfire exposure and does not state a county requirement that the sources do not show.
Should I leave during a fire?
Follow the instructions of the local fire and emergency services. A roof check does not replace an evacuation order.
Sources
This guide is general information for Ferry County homeowners, not a substitute for an on-site inspection. Prices are estimates. See our disclaimer.