The Dangers of an Undetected Chimney Fire

Most of us picture a chimney fire as something alarming and dramatic--flames shooting from the chimney onto the roof, thick smoke rolling, and fire trucks arriving outside the house.

But not all chimney fires are like that. Some burn so slowly and quietly that homeowners don't realize they're having one.

Even these less noticeable chimney fires can generate extremely high temperatures, potentially damaging the chimney system and creating a pathway for heat, smoke, or flames to spread to other areas of the home.

Keeping Your Home and Family Safe

Knowing what causes chimney fires, how to recognize one, how to prevent one, and what to do afterward can help protect your home and family.

What Causes a Chimney Fire?

Creosote buildup is a common cause of chimney fires. It forms when smoke and other combustion byproducts cool and collect along the inside walls of the flue. When enough creosote accumulates, high chimney temperatures can ignite it.

For this reason, the Chimney Safety Institute of America recommends scheduling an annual chimney inspection with a CSIA-Certified Chimney Sweep, like Admiralty Chimney.

To reduce creosote buildup, burn only dry, well-seasoned firewood and make sure your fire gets plenty of airflow so it burns efficiently. 

What Does an Active Chimney Fire Sound or Look Like?

The signs of an active chimney fire may include:

• Loud cracking or popping noises

• A roaring or rumbling sound

• Dense smoke

• An unusually intense hot or burning smell

• Flames or sparks coming from the top of the chimney

The Chimney Safety Institute of America notes that homeowners sometimes describe the sound as similar to a freight train or low-flying airplane. 

Don't assume the fire has safely gone out simply because the noise or flames stop. If you suspect an active chimney fire, get everyone out of your home and call 911.

The Chimney Fire You Didn't Know You Had

“We’ve had cases where a homeowner didn’t realize they had a chimney fire until we inspected their system,” explains John Butler, owner of Admiralty Chimney.

John points out that temperatures can still get high enough to crack flue tiles, damage mortar joints, warp metal components, or compromise the chimney's ability to safely contain combustion gases. 

“This is why an annual inspection is so important,” he adds.

What Should You Do After a Chimney Fire?

Even if the fire department has extinguished the fire and your home shows no visible damage, don't use your fireplace or wood stove again until a professional has evaluated the chimney. Extreme heat can damage areas of the chimney that aren't visible from either the fireplace opening or the roof.

Depending on the situation, a professional inspection may include an internal camera inspection to look for cracked flue tiles, failed mortar joints, separation, warping, or other heat-related damage. Don’t use your stove or fireplace until you complete any needed repairs.

How Can You Reduce Your Risk of a Chimney Fire?

Fortunately, chimney fires are preventable. One of the most important things you can do is schedule an annual chimney inspection and have it professionally cleaned as needed.

Also, be sure to follow basic precautions:

• Use a metal or glass screen.

• Only burn properly seasoned and stored firewood.

• Do not burn inappropriate materials.

• Avoid smoldering, poorly ventilated fires.

• Fully extinguish a fire before leaving home or going to bed

• Dispose of ashes properly in a covered metal container kept outside and away from the house.  

Fire Prevention Starts Before You Light the Match

Fireplace safety isn't only about what happens while a fire is burning. The condition of the chimney that carries smoke and heat out of your home is just as important.

If you're unsure when your chimney was last inspected, have noticed excessive creosote, experienced unusual noises or odors while burning, or believe you may have had a chimney fire in the past, schedule an inspection before continuing to use your fireplace or wood stove.

Chimney Inspections & Cleanings in Southern NH and Northern MA

At Admiralty Chimney, your safety is our business. Our experienced chimney professionals provide inspections, cleanings, repairs, and other chimney services for homeowners throughout Southern New Hampshire and Northern Massachusetts.

Before the burning season gets into full swing, contact Admiralty Chimney online or call (603) 594-0400 to ensure your chimney operates safely and efficiently.