Keep Fireplace Fire Burning (Field Tips)
To keep a fireplace fire burning steadily, use dry, untreated firewood, build a small fire with room for air to move, and add only a few pieces at a time. Keep the damper open in an open masonry fireplace, use a fitted screen, and stay nearby. If smoke spills into the room, stop adding wood and check the draft.
A common mistake is loading the firebox with large rounds or several logs before the kindling has caught. That can smother the flame, cool the fire, and send more smoke up the flue. Wet wood makes the problem worse. A steady fire comes from dry fuel, a clear path for air, and operating steps that fit your fireplace type.
Fireplace Setup and Safety Preparation
A good fire starts before you strike a match. Check the fireplace and alarms, clear the hearth area, and make sure the damper and flue are ready for use. These steps help the fire draw smoke outdoors and reduce the chance of sparks or smoke entering the room.
First, identify what you have. An open masonry fireplace, a fireplace insert, and a wood stove do not all operate the same way. Follow the appliance label and manufacturer’s instructions for doors, air controls, loading, and clearances. In an open masonry fireplace, keep the damper fully open whenever a fire is burning and until the ashes are cold. For an insert or stove, use its own operating directions.
Before lighting:
- Check that smoke and carbon-monoxide alarms work and meet local code.
- Look over the hearth, firebox, screen, and visible masonry. Do not use the fireplace if the flue is blocked, the lining is damaged, or chimney-fire damage is suspected.
- Confirm the damper opens fully and the flue is unobstructed. If you are unsure, wait for a professional inspection.
- Move combustible items at least 36 inches (914 mm) from the fireplace opening, unless the appliance instructions or local code require more.
- Fit the fireplace with a closed screen or doors made for that opening. Keep the screen in place while burning. Do not close fireplace doors unless the appliance instructions allow it.
Fuel matters as much as setup. Burn only dry, untreated natural wood. “Dry” means the moisture content is below 20%, checked with a moisture meter on a freshly split face. A reading on bark or an old outer surface may not show the moisture inside the log. Never burn wet or green wood, household waste, or painted or treated lumber.
I have seen a fire that looked lively at first fade after a large, damp log was added. The useful check is not whether the outside of the wood feels dry; split a piece and test the fresh interior. That gives you a better basis for choosing what goes into the fire.
Building and Managing the Fire
A steady fire needs a lively start and a clear route for air. Begin with small, dry kindling and a modest amount of dry cordwood, then let the kindling establish a flame before adding more fuel. Add only a few pieces at a time and leave gaps between them.
Use a match or a listed fire starter. Do not use gasoline, kerosene, alcohol, or any other liquid accelerant. Arrange kindling so air can reach it, then light it and keep the screen closed. Stay in attendance; do not leave a burning fireplace unattended.
Once the kindling is burning well, add a small piece of firewood. When that catches, add another if needed. Avoid crowding the firebox. Logs packed tightly together can restrict airflow and produce a smoky, weak fire. If the fire is struggling, do not keep adding wood. Check that the damper is open in an open fireplace, the fuel is dry, and the flue is drawing properly.
| What you see | Likely issue to check | Safer next step |
|---|---|---|
| Kindling flames, but a new log will not catch | The log may be too large or too damp, or airflow may be limited | Try a smaller, dry split; leave space around it |
| Smoke enters the room | Draft may be weak, or the flue may be obstructed | Stop adding fuel; check the damper and do not use the fireplace if the problem continues |
| Fire burns down soon after loading | Too little kindling, damp wood, or crowded fuel may be at fault | Let the bed establish, then add a few dry pieces with gaps |
| Flame grows after fresh fuel is added | The fire has enough heat and air to ignite the new wood | Continue with small additions rather than loading heavily |
These signs are clues, not a substitute for an inspection. Persistent smoke spillage, a poor draft, or trouble keeping a fire lit can point to a blocked or poorly functioning flue. Stop using the fireplace until the cause is checked.
Field scenario: You have a small flame and a pile of large splits ready beside the hearth. Loading several at once may cover the kindling and choke airflow. Instead, let the small fire catch first, add one manageable piece, and wait for it to ignite before deciding whether to add another. The fire should build in stages, not in one large load.
Do not try to force a fire to burn longer by shutting the damper in an open masonry fireplace. Keep it fully open while the fire burns and until ashes are cold. Inserts and stoves may have adjustable air controls, but those controls are appliance-specific; use the manual rather than applying open-fireplace rules to them.
Fireplace, Flue, and Chimney Inspection
A fireplace can appear ready while the flue still needs attention. Arrange an inspection at least once each year, as NFPA 211 calls for, and have the chimney cleaned when needed. A clear, sound venting path helps smoke leave the home and lets you use the fireplace with more confidence.
Creosote is a combustible deposit that can build up inside a chimney as wood smoke cools. Wet wood increases smoke and can contribute to creosote buildup. Burning dry wood and keeping the fire supplied with air are good operating practices, but they do not replace inspection or cleaning.
Use the annual inspection to check the fireplace, flue, and chimney for blockage, damage, and soot or creosote deposits. Cleaning is needed when buildup is present. If you cannot see the full flue or judge its condition, get help from a qualified chimney professional. Do not assume a chimney is safe because smoke seems to go upward.
Keep an eye out for signs that need prompt attention: smoke entering the room, a strong smoky smell when no fire is burning, falling debris, or visible damage. Stop using the fireplace if you suspect a problem. After a chimney fire, do not light another fire until the chimney has been inspected and cleared for use.
A chimney fire may ignite creosote and spread into the structure. If you hear a loud roaring or cracking sound, see dense smoke or flames coming from the chimney, or otherwise suspect a chimney fire, evacuate and call emergency services. Do not pour water into the fireplace. Your priority is getting people out and alerting responders, not trying to put out the chimney fire yourself.
Ash Handling and Seasonal Care
A fire is not finished when the flames disappear. Let it die down naturally, keep the screen closed, and leave the damper open in an open masonry fireplace until the ashes are cold. Handle ashes with care: embers can remain hot after the visible fire has gone out.
Do not add more wood just to use up a load or keep flames going as you leave the room. When you are ready to finish, stop adding fuel and allow the fire to burn down on its own. Keep the screen in place while it burns down and while ashes cool. Follow the appliance manual if you use an insert or stove.
Once ashes are cold, place them in a covered metal container. Store that container outdoors on a noncombustible surface, away from buildings and combustible materials. Do not put ashes in a paper bag, cardboard box, or a container that could melt or catch fire.
Before the next fire, check that the screen is sound and the hearth is clear. Keep dry firewood ready, but do not store it close to the fireplace opening. Use your moisture meter on a freshly split face when you are unsure whether a piece is ready to burn.
Field scenario: At the end of an evening, a bed of ash may hide a live ember. Closing the damper too soon in an open fireplace can trap smoke or gases in the home. Leave it open until the ashes are cold, then move them to the covered metal container and store it safely outdoors.
Quick Answers for a Steady, Safe Fire
These answers cover the most common questions about starting, tending, and ending a fireplace fire. The right method depends on the fireplace type, so use the appliance instructions where they differ from general advice for an open masonry fireplace.
How dry should firewood be?
Below 20% moisture content. Test the freshly split face with a moisture meter.
Where should I test a log?
Split it and test the new interior face. Bark and old outer surfaces can give a misleading reading.
How often should I have the chimney inspected?
At least once a year. Arrange cleaning when soot or creosote buildup is present.
Should the damper stay open while a fire burns?
Yes, in an open masonry fireplace. Keep it fully open during the fire and until ashes are cold. Follow the appliance instructions for an insert or stove.
How much wood should I add at once?
Add only a few pieces after the fire is established. Leave space between them so air can reach the fuel.
What should I do if smoke comes into the room?
Stop adding wood and check that the damper is fully open, if it is an open fireplace. If smoke continues, stop using the fireplace and have the venting path checked.
Can I burn painted or treated wood?
No. Burn only untreated natural wood, and do not burn household waste.
Can I use a liquid accelerant to start a stubborn fire?
No. Do not use gasoline, kerosene, alcohol, or other liquid accelerants. Use dry kindling and a match or listed fire starter.
What do I do if I suspect a chimney fire?
Evacuate and call emergency services. Do not pour water into the fireplace.
When can I close the damper after a fire?
For an open masonry fireplace, wait until the ashes are cold. Inserts and stoves may have different instructions, so follow the manual.
(This article was written by one of our staff writers, Samuel Vance. Visit our Meet the Team page.)
