Minimize Creosote Buildup
If you use a wood-burning fireplace, beautiful fires should be expected every time you fire up. So should the production of creosote. You can’t burn wood without creating at least some of this flammable smoke byproduct, but you can keep creosote buildup inside your chimney at minimum levels.
Excess creosote is a safety issue
Creosote is produced when smoke condenses in your flue. The result is a substance that can be flakey, sticky or hard. Regardless the form, creosote is highly flammable and is responsible for most chimney fires in the U.S. each year.
The nonprofit National Fire Protection Association, founded in 1896, recommends annual professional inspection and chimney sweep services to deal with the problem of creosote. So does virtually every other fire-safety organization in America.
Chimney fires are tricky
Not all chimney fires are big, obvious, blazing spectacles. Many are relatively small and start and go out on their own. But any chimney fire can cause damage to the chimney liner and the chimney masonry. When damage begins, it’s not long before the intense heat of fires can reach combustible materials of your home’s interior.
Signs of a chimney fire
Chimney fires aren’t always visible, but they are detectible:
Excess thick black smoke from either end of the chimney
A rumbling sound similar to a far-away train
An odd ticking or clicking sound
If you notice any of these while burning a fire, call local emergency services and extinguish the fire in the firebox, if safe to do so.
How excess creosote is formed
The more smoke, the more creosote. The damper the wood, the more smoke. You can reduce the amount of creosote your chimney collects by burning only dry (seasoned) wood, which burns more efficiently and produces much less smoke.
When buying firewood, look for these characteristics:
Flakey bark as opposed to bark that clings to the logs
An empty, hollow sound when two logs are struck together
Light-feeling logs (means they contain minimal moisture)
A dark color to the wood
Ends of logs that are split and cracked
What a chimney sweep does
“Chimney sweep” is the common name for people who clean chimneys. The best chimney sweeps hold professional industry certifications such as Master Chimney Sweep and Certified Chimney Sweep, designations given by the Chimney Safety Institute of America. Always look for industry credentials when hiring someone to clean your chimney.
Skilled chimney sweeps have specialized tools including hand and power brushes, scrapers, solvents and vacuums that allow them to thoroughly clean creosote and obstructions out of your chimney flue.
By scheduling annual chimney cleaning and inspection services, you’ll be able to significantly reduce the level of creosote and various obstruction-causing debris inside your chimney. Burning dry, less-smoky wood and having your chimney serviced regularly will keep your chimney safer and more reliable all year long.
Fluesbrothers Chimney & Fireplace of Kansas City, KS, is ready to help with all your fireplace, chimney and heating stove needs. We offer certified chimney sweep services as well as chimney inspection, chimney repair and chimney rebuilding. Call us at (913) 236-7141 when you want the job done properly by professionals you can trust.
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A lot of times when fires in a fireplace are less than spectacular – when they’re too smoky, don’t last very long, produce excess soot and creosote – it’s not the fault of the fireplace. Often, the only problem is the wood that’s being used.
Logs stored outside should be set on some kind of small riser/pallet to keep them off the damp ground. Cover the stack with a waterproof tarp, but leave the ends open so air can circulate within the logs and aid in the drying process.
When the weather turns colder, cozying up to the warmth of a crackling fire in the fireplace is something many homeowners enjoy. But not everyone looks forward to lighting it. If this sounds like you, then you’re in luck. The following guide will show you the right way to light a fire in the fireplace and keep it lit.
Warm up the flue. You can light your fire without warming the flue, but you could experience a draft where smoke may flow back into your home. To warm the flue, light some rolls of newspaper and hold them up inside the flue for around ten to fifteen seconds. It will also reduce air pressure, and oxygen will flow more smoothly.

When a fire burns in your fireplace it constantly produces soot and creosote and deposits them into the chimney flue. Soot is merely carbon, harmless unless it’s allowed to buildup and cause an obstruction. Creosote is produced when organic materials are burned and is made up mostly of tar, a sticky, flammable substance. It builds upon itself until a significant buildup occurs, slowing the flow of air through the flue. As efficiency drops, the buildup worsens and hot air begins to stall in the system. As temperatures increase, the creosote boils and the water evaporates leaving a concentrated, hardened mass when the creosote cools. This buildup called “glazed creosote” is highly flammable, obstructs airflow, and is difficult to remove. Because of this, creosote should be removed before it reaches 1/8 inch in thickness. A standard chimney sweep can remove creosote, but glazed creosote requires a special industrial solvent that transforms the creosote as it’s absorbed.
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You should also replace the chimney cap when it begins to rust or corrode. The continuous exposure to moisture, creosote, and other contaminants can result in rust or corrosion and weaken its effectiveness. When the chimney cap is heavily rusted, it can easily rip apart. Even small animals looking for shelter can force their way through the weakened mesh and obstruct the flue.
The quintessential wood stove is an indispensable source of heat for many homeowners, especially in older homes built before the arrival of central air. And since modern wood stoves are more environmentally friendly than ever before, they have grown in popularity. But whether you use a wood stove for primary or supplemental heating, you need to make sure you are operating the appliance safely.
The stovepipe vents the smoke and fumes in the wood-stove out through the chimney. It is unsafe to use a stovepipe without connecting it to an approved chimney system. A combination of high temperatures along with CO2 gases along with creosote buildup inside the stovepipe can start a fire. Periodically cleaning the stovepipe and ensuring it is correctly vented to the chimney reduces the risk of fire and carbon monoxide poisoning.