What Homeowners Need to Know About Chimney Fires

 

Chimney fires can be a devastating event for homeowners, leading to extensive damage and posing serious safety risks. Understanding the causes and implementing preventive measures is crucial for maintaining a safe home environment. This article will explore effective strategies to avoid chimney fires, ensuring that your fireplace or wood stove remains a source of warmth and comfort rather than a potential hazard.

Understanding Chimney Fires

Chimney fires occur when the buildup of creosote—a highly flammable substance formed from burning wood—ignites within the chimney flue. This can lead to flames shooting out of the chimney, causing significant damage to the structure and potentially spreading to other parts of the home. Recognizing the signs of a chimney fire and understanding its causes is the first step in prevention.

Causes of Chimney Fires

1.       Creosote Buildup: The primary cause of chimney fires is the accumulation of creosote, which can ignite when exposed to high temperatures. All types of wood create creosote. 

2.       Improper Burning Practices: Burning unseasoned wood or using excessive amounts of fuel can lead to incomplete combustion, resulting in more creosote production.

3.       Obstructions: Debris, animal nests, or blockages in the chimney can restrict airflow, increasing the risk of a fire.

4.  Improper Maintenance: Lack of proper maintenance, including sweeping to remove creosote, and inspections to check the condition of the chimney, can lead to chimney fires. 

Regular Inspections and Maintenance

Annual Chimney Inspections

One of the most effective ways to prevent chimney fires is to schedule annual inspections with a certified chimney sweep. These professionals will thoroughly examine your chimney for any signs of damage or buildup and perform necessary cleanings.

What to Expect During an Inspection:

·         A thorough cleaning of the flue to remove soot and creosote.

·         An inspection with a Chimney camera, visual inspection, and a detailed condition report outlining any issues
       found.

·         Recommendations for repairs or maintenance.

Cleaning Your Chimney

Regular cleaning is essential to prevent creosote buildup. Homeowners should consider the following:

·         Frequency of Cleaning: If you use your fireplace frequently, aim for at least two cleanings per year. For occasional use, an annual cleaning may suffice. For wood stove burners: at least twice during the season. 

·         DIY Cleaning: If you choose to clean your chimney yourself, ensure you have the right tools, such as chimney brushes and rods, and follow safety precautions. This is not recommended because homeowners usually will not know how to identify problems with the chimney system. 

Proper Wood Burning Practices

Use Seasoned Wood

Burning seasoned wood is crucial for minimizing creosote buildup. Seasoned wood has been dried for at least six months, reducing moisture content to 20%, and producing less smoke.

Identifying Seasoned Wood:

·         Look for cracks on the ends of the logs.

·         The wood should feel lightweight and produce a hollow sound when struck together.

• Use a moisture meter to measure moisture content
  

Control Airflow

Understanding how to manage airflow in your fireplace or wood stove can significantly impact combustion efficiency.

·         Adjusting the Damper: Ensure the damper is fully open when starting a fire to allow for maximum airflow. Once the fire is established, you can adjust it to maintain a steady burn.

·         Avoid Overloading: Do not overload your fireplace or stove with wood, as this can lead to smoldering fires that produce more creosote.

Installing Safety Features

Chimney Caps

Installing a chimney cap can help prevent debris and animals from entering the chimney, which can obstruct airflow and increase fire risk.

·         Benefits of a Chimney Cap:

·         Keeps out rain and snow, reducing moisture buildup.

·         Prevents animals from nesting in the chimney.

Monitoring Fire Conditions

Use a Chimney Thermometer

A chimney thermometer can help you monitor the temperature of the flue gases. Keeping the temperature within the optimal range (300-500 degrees Fahrenheit) can help prevent creosote buildup.

·         Signs of Overheating: If the thermometer indicates temperatures above 500 degrees, reduce the amount of wood being burned or adjust the airflow.

Recognize Warning Signs

Being aware of the signs of a chimney fire can help you act quickly if one occurs. Look for:

·         Loud roaring or popping noises from the chimney.

·         Flames or sparks shooting from the chimney top.

·         Smoke suddenly backing up into the home.

Emergency Preparedness

Know What to Do in Case of a Chimney Fire

If you suspect a chimney fire, it’s essential to act quickly:

•     Call Emergency Services: Dial 911 immediately to report the fire.
•     Close the Damper: If safe to do so, close the damper to limit airflow and help extinguish the fire.
•     Evacuate the Home: Ensure everyone in the home is safe and evacuate if necessary.
•   Keep watch for several hours after the fire has been extinguished. Sometimes fires or heat that escape      the chimney can ignite nearby combustibles in the walls or attic and smolder for hours. 

Keep Fire Extinguishing Tools Handy

Having the right tools on hand can make a difference in an emergency:

·         Fire Extinguisher: Keep a Class ABC fire extinguisher near your fireplace or wood stove.

·         Chimney Fire Extinguishers: Consider investing in specialized chimney fire extinguishers that can be deployed in case of a fire.

Conclusion

Preventing chimney fires requires a combination of regular maintenance, proper burning practices, and awareness of potential hazards. By following these guidelines, homeowners can enjoy the warmth and comfort of their fireplaces and wood stoves while minimizing the risk of fire. Remember, safety should always be a priority, and when in doubt, consult with a professional to ensure your chimney is in optimal condition.

By taking proactive measures, you can protect your home and loved ones from the dangers of chimney fires, ensuring a safe and enjoyable heating experience throughout the colder months.
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Marge Padgitt is a seasoned veteran in the chimney industry, with over 40 years of experience. She is the author of Your House is Killing You, Wood-Fired Heating and Cooking, and The Chimney and Hearth Pro's Resource Book. Reach her at www.chimkc.com or email margepadgitt@gmail.com. 

How to Maintain a Masonry Chimney and Keep it Functional for Years to Come

Maintaining a masonry chimney is essential for ensuring its longevity and functionality. A well-maintained chimney not only enhances the aesthetic appeal of your home but also plays a crucial role in the safety and efficiency of your heating system. This comprehensive guide will walk you through the various aspects of chimney maintenance, from identifying signs of damage to performing regular inspections and repairs.

Understanding the Importance of Chimney Maintenance

Chimneys are exposed to various environmental factors, including rain, snow, and extreme temperatures, which can lead to deterioration over time. Regular maintenance is vital for preventing costly repairs and ensuring the safety of your home. Here are some key reasons why chimney maintenance should be a priority:

Safety Concerns

A poorly maintained chimney can pose serious safety hazards, including the risk of chimney fires and carbon monoxide poisoning. Creosote buildup, a byproduct of burning wood, can ignite and cause a fire within the chimney. Regular cleaning and inspections can help mitigate these risks.

Structural Integrity

Over time, moisture can seep into the masonry, leading to cracks and deterioration. If left unaddressed, these issues can compromise the structural integrity of the chimney, potentially leading to costly repairs or even collapse.

Efficiency

A well-maintained chimney ensures proper ventilation for your fireplace or heating system. Blockages or damage can hinder airflow, reducing the efficiency of your heating system and increasing energy costs.

Signs of Damage to Look For

Being proactive in identifying signs of damage can save you from more extensive repairs down the line. Here are some common indicators that your chimney may need attention:

Cracks and Gaps

Inspect the exterior of your chimney for visible cracks or gaps in the bricks or mortar joints. These can develop due to thermal expansion, settling of the foundation, or freeze-thaw cycles. Addressing these issues promptly can prevent further damage.

Spalling Bricks

Spalling occurs when the surface of the bricks begins to flake or chip away, exposing the inner layers. This can be caused by moisture infiltration, rain, and freeze-thaw cycles. Spalling not only affects the appearance of your chimney but also compromises its structural integrity. If you see spalling bricks, have them replaced. If a large area of the chimney is spalling it may need to be rebuilt. Soft bricks are more susceptible to moisture penetration than hard bricks, but unfortunately, builders use soft bricks in many cases because they are less expensive. 

Effleorescence

Efflorescence

Efflorescence appears as white stains on the chimney surface, caused by the migration of salts to the surface due to moisture evaporation. While not harmful in itself, it can indicate underlying moisture issues in the interior that need to be addressed. In most cases, efflorescense is seen on the utility flue side where the water heater, furnace, or boiler are located. Inspection of the interior flues in the chimney are critical to check for washed out mortar joints, gaps, or even missing flue tiles, and properly sized flue liners. 

Water Stains

Look for water stains on the ceiling or walls near the chimney. These can indicate leaks caused by damaged flashing or deteriorated chimney crowns. If left unchecked, water intrusion can lead to mold growth and wood rot. The chimney should be inspected by a professional, who knows how to do leak checks and find the source(s) of the problem. 

Smoke and Odors

If you notice smoke or unpleasant odors entering your home when using the fireplace, it may indicate blockages or airflow problems. Common causes include creosote buildup or debris obstructing the flue.

Regular Inspections: A Key Component of Maintenance

Conducting regular inspections is crucial for identifying potential issues before they escalate. Here’s how to approach chimney inspections:

Frequency of Inspections

It is recommended to have your chimney inspected at least once a year by a qualified professional chimney sweep. This ensures that any signs of damage or deterioration are caught early.

What to Expect During an Inspection

During a professional inspection, the technician will assess the condition of the chimney structure, check for signs of damage, and recommend necessary repairs or maintenance. They will also inspect the flue for blockages, make sure the damper is functioning correctly, check for proper sizing of the flue liner, inspect the smoke chamber, ensure that the chimney cap is in good condition and more. A pro will use a chimney camera system to inspect the interior of the chimney and provide a written report with photos. 

Cleaning Your Chimney

Regular cleaning is essential for maintaining the safety and efficiency of your chimney. Here’s how to approach chimney cleaning:

When to Clean

Schedule a professional chimney cleaning at least once a year, or more frequently if you use your fireplace or wood-burning insert regularly. If you notice a buildup of soot or creosote, it’s time for a cleaning.

DIY Cleaning Tips

If you choose to clean your chimney yourself, ensure that you have the proper tools, including a properly sized chimney brush, a vacuum, tarps, and protective gear. Start by removing the fireplace grate and any ashes, then use the brush to scrub the flue from top to bottom. Note: we do not recommend doing this job yourself unless a pro is not available. 

Waterproofing Your Chimney

Applying a waterproof treatment can help protect your chimney from moisture damage. Here’s what you need to know:

Benefits of Waterproofing

Waterproofing helps prevent water absorption, which can lead to brick deterioration and weakening or deterioration of mortar. It is recommended to reapply the sealant every 2-5 years or when water no longer beads up. Professional chimney sweeps have access to professional-grade water repellent that is not available to the public.

Installing a Chimney Cover

A chimney cap serves as a protective barrier against rain, snow, debris, and animals entering your chimney. Here’s why it’s important:

Benefits of a Chimney Cover

A properly installed chimney cap helps prevent moisture damage and reduces the risk of chimney fires caused by debris buildup. It also keeps birds and animals from entering your chimney and making flammable nests or blockages.

Maintenance of the Chimney Cover

Regularly inspect the chimney cap to ensure it is securely in place and free of debris. If you notice any damage, consider replacing it promptly.

Monitoring for Damage

Being vigilant about monitoring your chimney can help catch issues early. Here are some tips:

Visual Inspections

Conduct monthly visual inspections of your chimney and fireplace. Look for loose bricks, cracks, or signs of water damage. If you notice any issues, contact a professional for further assessment.

Seasonal Maintenance

Perform seasonal maintenance checks, especially before and after the burning season. In the spring, inspect and clean your chimney to remove smelly creosote and assure it is ready for fall. Also check for any damage that may have occurred during the winter.

Safe Burning Practices

Practicing safe burning techniques can help minimize creosote buildup and protect your chimney. Here’s how:

Use Seasoned Wood

Always use seasoned hardwoods in your fireplace or wood-burning stove. These woods produce less creosote compared to unseasoned or softwoods, however, all wood creates creosote that must be removed at some point. Do not burn hedge or dry pine because these woods burn very hot and fast and can lead to a chimney fire. Check moisture content with a moisture meter and make sure it is at or under 20%. 

Avoid Burning Trash

Never burn trash, cardboard, wrapping paper, railroad ties, or other materials that can release harmful chemicals and contribute to chimney damage. Stick to burning only dry, seasoned wood.

Scheduling Professional Repairs

If you notice significant damage or structural issues with your chimney, it’s essential to contact a certified chimney professional for repairs. Here’s what to consider:

Choosing a Professional

Look for a chimney service provider with experience and positive reviews. Ensure they are certified and knowledgeable about masonry repairs.

Importance of Timely Repairs

Addressing chimney issues promptly can prevent further damage and ensure the safety and efficiency of your heating system. Don’t wait until minor problems escalate into major headaches.

Conclusion

Maintaining a masonry chimney is crucial for ensuring its longevity, safety, and efficiency. By conducting regular inspections, cleaning, and addressing any signs of damage promptly, you can keep your chimney functional for years to come. Remember, when in doubt, consult a professional to ensure that your chimney remains a safe and reliable part of your home.

By following these guidelines, you can enjoy the warmth and ambiance of your fireplace with confidence, knowing that your chimney is well-maintained and safe for use.

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Marge Padgitt is the co-owner of HearthMasters and HearthMasters Publishing. She was a Certified Chimney Sweep from 1990-2004, and an NFI Certified Woodburning Specialist from 2003-2024, when she semi-retired from contracting. Marge is the author of Wood-Fired Heating and Cooking, Your House is Killing You, and The Chimney and Hearth Pro's Resource Book. www.chimkc.com 

2,000 Year Old Painting of a Pizza Proves the Italians Created This Dish!

According to the BBC,  The recently-discovered fresco emerged on a partially-destroyed wall within a Pompeii residence's corridor.

Researchers exploring the preserved Roman city of Pompeii have discovered an artwork that potentially shows an early version of what would become Italy's famous pizza.

Photo: Italian Ministry of Culture

The circular bread shown in the ancient fresco "could represent an early predecessor of today's popular dish," according to Italian heritage officials. However, it lacks the traditional toppings required to classify it as a true pizza.

The artwork was discovered in a residence's entrance hall adjacent to a bakery during current excavations at the southern Italian site. The find occurred this year during ongoing exploration of Regio IX, one of nine sectors comprising the historic settlement.

The structure had undergone partial excavation during the 1800s before work resumed in January this year—approximately two millennia after the volcanic disaster that consumed the city.

Experts at the Unesco-listed archaeological park indicate the newly-revealed fresco showing the bread, depicted alongside a chalice of wine, suggests it may have been consumed with fruits like pomegranates or dates, or enhanced with herbs and a primitive pesto preparation.

Site director Gabriel Zuchtriegel noted the artwork's portrayal of the contrast between "modest, basic fare" and "ornate silver platters." "It's impossible not to draw parallels with pizza, which similarly originated as humble fare in Italy's south before achieving global popularity and earning a place in fine dining establishments," he remarked.

Additionally, researchers recently discovered three human remains near the kitchen area's furnace within the building's service section, officials reported.

The Vesuvius volcanic catastrophe in AD 79 preserved Pompeii under volcanic debris, effectively freezing the city and its inhabitants in time. Since its 16th-century discovery, the location has provided invaluable archaeological insights.

The archaeological park lies approximately 23 km (14 miles) from Naples—the contemporary birthplace of the Unesco-recognized Italian pizza.

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Margie Padgitt is a 40-year veteran chimney business owner, author, and filmmaker living in Kansas City, Missouri. Contact: margepadgitt@gmail.com 

 

Safety Tips for Fireplaces and the Holidays

 Tip #1: Inspections. Some people use their fireplaces year-round and others only build a fire during the holidays - but it is important to have the chimney inspected and cleaned if necessary no matter how much the fireplace is used. This is because things can happen during the year to make fire hazards such as birds or squirrels building flammable nests, masonry deterioration, unseen blockages, etc.

Tip #2: Stockings. In the photo above we see just two stockings hanging above the fireplace, but they are still too close to the fire. Stockings are a fire hazard, so please remove them before building a fire in the fireplace. Also keep all flammable items at least 36" away from the fireplace opening, whether it is wood or gas burning.

Tip #3: Don't Burn Dry Christmas Trees. If you're using a real tree this year, it will dry out by the time January 1 rolls around. Dry pine is the most flammable type of wood but a Christmas tree is the most dangerous. Check YouTube to see some crazy people put their trees into their fireplaces and see them start chimney fires and watch flames shooting out the top of the chimney. Not a good idea. Instead, cut the tree into very small pieces and use them for fire starter throughout the winter.

Tip #4: Don't Burn Wrapping Paper. Keep the pretty wrapping paper out of the fireplace because when it burns it releases toxic fumes. Any paper that has color on it will produce toxins, and that includes magazines, brochures, flyers, etc. As a rule of thumb, only burn cordwood in a fireplace. If you have gas logs, don't put anything in the fireplace.

Have a Safe and Happy Holiday Season!

How to Avoid Chimney Fires

According to the U.S. Fire Administration, an estimated 32,200 home heating fires were reported to fire departments within the United States. These fires caused an estimated 190 deaths, 625 injuries and $442 million in property loss.  Home heating fires account for 500 deaths per year.

There are over 25,000 chimney fires in the U.S. annually, and three out of 10 house fires (44,000) are related to heating appliances. For this reason alone, it is important to keep chimneys maintained, but performance problems can also arise that are not related to hostile fires.

Note: A "Friendly Fire" is one that is intended such as a fire in the fireplace or a candle burning. It becomes a "Hostile Fire" when it reaches beyond its intended location.

ALL OF THESE FIRES ARE PREVENTABLE

It is important to remember that ALL wood creates creosote, even hardwoods. The creosote must be removed by brushing with a special wire chimney brush for tile flue liners, or a poly brush for stainless steel flue liners or metal chimney pipe. The wrong type of brush can damage metal liners.

Chimneys should be swept when there is 1/8" or more of creosote on the flue walls. This is difficult to see, so another rule of thumb is to have the chimney swept annually for open fireplaces or at least twice seasonally for inserts or freestanding stoves.

How to prevent chimney fires

• Have the chimney swept regularly by a professional chimney sweep, who will also inspect the chimney to be sure it is in good working order.
• Use only dry wood (check with a moisture meter) that has been seasoned for a minimum of 6 months.
• Never burn dry Christmas trees, wrapping paper, or newspaper as these items often cause fires.
• The use of a "Chimney sweeping log" may result in a chimney fire since it detaches creosote from the flue walls and brings it closer to the fireplace, but does not remove the creosote.
• Use inserts and freestanding wood-burning stoves according to the manufacturer's instructions by leaving the door closed during burning, and regulating air intake so it does not overfire the stove. Overheating can ignite creosote in the pipe or flue without direct flame.

Most chimney fires are not detected by the homeowner

Chimney fire damage is usually detected by a chimney sweep during sweeping and inspection. Telltale signs are broken flue liners, blown out mortar joints, buckled metal liners or pipe, white hot spots, and burnt honeycomb creosote. There may also be expansion breaks in masonry. With this in mind, we estimate that there are 10 times the official reported totals!

While there are chimney fire signs to watch out for such as a loud wooshing or freight train sound and flames shooting out the top of the chimney, chimney fires are usually of short duration and not noticed while people are out of the room.

Damaged chimney flue liners can allow Carbon Monoxide, creosote, and smoke to escape into the area outside the liner and possibly into the house, making a damaged chimney a potential hazard. This is why it is so important to have regular inspections completed.

For more information visit www.chimkc.com

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Marge Padgit is a veteran chimney contractor, writer, and podcast host. Contact her at margepadgitt@gmail.com

Squirrels and Racoons are Chimney Hazards!

 

Squirrels and racoons use chimneys to build nests for their young. Mama racoons are especially aggressive if their young are approached and may bite. Unfortunately, racoons carry rabies and if bitten a person would need to have rabies treatment. Both squirrels and racoons carry diseases as well.

Squirrels have been known to build extremely large nests inside chimneys, causing a blockage and also a fire hazard. In one case, we encountered a 20'-foot tall, hard packed squirrel nest from a 30' tall chimney which took all day to remove. Besides being a fire hazard, nests block the flow of flue gasses which need to exit through the chimney.

It is best to avoid intrusion by these animals with the use of a heavy-duty stainless-steel chimney cover from a professional chimney sweep, which is much more difficult to destroy than a standard chimney cover that is available at hardware stores or box stores. The standard black steel covers also rust, causing unsightly stains on masonry that can't be removed.

However, if a racoon or squirrel family has set up home in your chimney, call a professional animal removal expert to have them removed prior to installing a cover.

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Marge Padgitt is the author of Wood-Fired Heating and Cooking and the host of The Hearth and Home Show on the HearthMasters YouTube Channel. Reach her at www.chimkc.com.

Chimney Swifts are Coming!

 

Chimney Swifts, those agile aviators of the sky, have intriguing nesting habits. The love to build flammable nests inside chimneys, along with other bird species.

• Chimney Swifts overwinter in the Amazon Basin in South America and return to nest across the eastern half of the USA each spring, and that includes the Midwest.
• These birds prefer dark and sheltered sites with vertical walls. While chimneys are their favored nesting spots, they also nest in: Natural sites: Hollow trees and tree cavities.
• Nest sites: Chimneys, wells, abandoned buildings, barns, silos, and outbuildings.
• Nesting Period: Chimney Swifts begin nesting in the spring or summer.
• The entire nesting process typically takes about two and a half months.
• These skilled architects weave their nests from small twigs, securing them to vertical surfaces using their glue-like saliva.
• Incubation lasts from 16 to 21 days, and the young fledge between 14 and 19 days after hatching.
• Overall, the nesting time frame for chimney swifts spans 30 to 40 days.
• Chimney Swifts have been nesting in chimneys for centuries, benefiting from the increased abundance of nest sites due to human development.
• Concerned birdwatchers can contribute by erecting Chimney Swift nest towers to provide additional nesting sites OUTSIDE their chimney.
• Chimney swifts are protected by the Migratory Bird Act so removal from a chimney is not an option. Only the nests can be removed after the fledglings have left the nest.

Keep birds out of chimney flues by having heavy duty stainless steel chimney covers installed.

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Marge Padgitt is the author of Wood-Fired Heating and Cooking and host of The Hearth and Home Show on the HearthMasters YouTube Channel. She can be reached at www.chimkc.com.