How To Put Out A Chimney

Fire can be both fascinating and terrifying. It has the power to provide warmth and comfort, but it can also cause destruction and havoc if not handled properly.

Chimney fires are a real concern for homeowners, as they can spread rapidly and pose a serious threat to the safety of your home and loved ones.

In this blog post, we will explore the importance of understanding how to extinguish a chimney fire and provide valuable tips and insights to ensure you are well-prepared to tackle this potentially dangerous situation. So, read on to learn more about chimney fires and how to deal effectively.

How To Put Out A Chimney Fire

How To Put Out A Chimney Fire

Dealing with a chimney fire can be dangerous, and it’s important to prioritize safety. While it is generally recommended to leave the task of extinguishing a chimney fire to the fire service, if you find yourself in a situation where you cannot wait for their arrival, you can take some immediate actions to control the fire.

Here’s a step-by-step guide on how to put out a chimney fire by yourself:

Act quickly: As soon as you notice a chimney fire, immediately prevent its spread and minimize the risk of damage or injury.

Close inlet valves and chimney hatches: Shutting off the air supply to the fire is crucial. Close all the dampers, inlet valves, or other openings that supply air to the fireplace or stove. This will help reduce the oxygen flow and slow the fire’s progression.

Call the fire service: While attempting to control the fire, it’s vital to call the fire service and inform them about the situation. They have the necessary expertise and equipment to handle chimney fires safely.

Use water or fire extinguisher for exterior fires: If the fire has extended beyond the chimney flue and is affecting the surrounding area or structure, you can consider using a hose or a fire extinguisher to extinguish the flames. Aim the water or fire extinguisher at the base of the fire and sweep it from side to side.

Control the fire inside the flue with a powder extinguisher: If the fire is contained within it and you cannot wait for the fire service, you can attempt to control it using a powder fire extinguisher. Aim the extinguisher at the opening of the flue and discharge the powder into the fire. Sweep the extinguisher from side to side to cover the entire fire area.

Use a chimney fire suppressant: Chimney fire suppressants are specially formulated chemicals that can help smother and prevent fire from spreading.

These suppressants can be purchased from home improvement stores or recommended by a chimney professional. Follow the product instructions carefully and apply the suppressant as directed.

Monitor the situation: After taking these initial steps, keep a close eye on the fire and the surrounding area. If the fire continues to grow or becomes uncontrollable, evacuate the premises immediately and wait for the fire service to arrive.

What Are The First Signs Of A Chimney Fire?

Recognizing the early signs of a chimney fire is crucial for taking immediate action and preventing further damage. Here are some common indicators that may suggest a chimney fire:

Loud cracking or popping sounds: You may hear loud noises from the chimney. These sounds are caused by the fire’s intense heat, which can cause the masonry and metal components of the chimney to expand and contract rapidly.

Dense smoke: Excessive smoke from the chimney, often darker and thicker than usual, can indicate a fire. The smoke may have a strong, acrid odor and contain sparks or embers.

Strong, intense odor: A strong, uncharacteristic smell can accompany a chimney fire. It can be described as a burning or smoky odor that permeates your home.

Vibrations or trembling: You may feel vibrations or trembling in the walls, floors, or chimneys. The intense heat from the fire can cause structural components to shake.

Discolored or distorted chimney cap: If you can safely access the chimney cap, check for signs of discoloration or warping. The extreme temperatures of a chimney fire can cause the cap to become discolored or distorted.

Cracks or damage to the flue lining: Inspect the interior of your chimney for any visible signs of damage, such as cracks, gaps, or missing pieces in the flue lining. A chimney fire can cause the flue lining to crack or deteriorate, compromising its structural integrity.

Causes Of A Chimney Fire

Chimney fires can occur due to various factors related to improper maintenance and usage of the chimney system. Here are some common causes of chimney fires:

Creosote buildup: Creosote is a highly flammable substance that is a byproduct of burning wood or other solid fuels in the fireplace or stove.

Over time, if the chimney is not cleaned regularly, creosote can accumulate on the interior walls of the flue. This buildup of creosote becomes a major fuel source for chimney fires.

Insufficient air supply: Adequate air supply is essential for proper combustion in the fireplace or stove. If there is not enough air getting into the firebox, incomplete combustion occurs, leading to the production of more creosote.

Insufficient air supply can be caused by closed or obstructed dampers, closed glass doors, or lack of proper ventilation in the room.

Use of unseasoned or wet wood: Burning unseasoned or wet wood with a higher moisture content can contribute to the formation of more creosote.

Wet wood burns at a lower temperature, leading to incomplete combustion and increased creosote buildup in the chimney.

Improperly sized or blocked chimney: A chimney that is too small for the fireplace or stove it serves can lead to restricted airflow and inadequate ventilation. This can cause a buildup of combustible materials and increase the risk of chimney fires.

Additionally, obstructions such as bird nests, debris, or structural damage in the chimney can disrupt the proper flow of gases and increase the likelihood of a fire.

Overloading the fireplace or stove: Burning excessive fuel or overcrowding the fireplace or stove can generate more heat than the chimney is designed to handle. This excess heat can cause the buildup of creosote to ignite and result in a chimney fire.

Malfunctioning or damaged components: Faulty or damaged components of the chimney system, such as cracked flue liners, deteriorated masonry, or damaged chimney caps, can contribute to chimney fires.

These defects can allow heat, sparks, or embers to reach combustible materials in or around the chimney, increasing the risk of ignition.

How Serious Is A Chimney Fire?

Chimney fires can be extremely serious and pose significant property and personal safety risks.

The severity of a chimney fire can vary depending on several factors, including the intensity and duration of the fire, the condition of the chimney, and the proximity of combustible materials to the fire.

Here are some potential consequences and risks associated with chimney fires:

Structural damage: Chimney fires generate intense heat that can cause significant damage to the chimney structure, including the flue lining, masonry, and chimney cap.

Extreme temperatures can lead to cracks, warping, or even collapse of the chimney, compromising its integrity and requiring costly repairs or reconstruction.

Spreading to the surrounding areas: If not contained, a chimney fire can spread to the roof or other combustible materials near the chimney, such as walls, framing, or insulation. This can result in a full-blown house fire, endangering the entire property and its occupants.

Smoke and soot damage: During a chimney fire, smoke and soot can be forced out of the chimney and into the living space. This can lead to extensive smoke and soot damage to walls, furniture, carpets, and other belongings. The cleanup and restoration process can be time-consuming and expensive.

Release of toxic gases: Chimney fires can cause the release of toxic gases, such as carbon monoxide, into the living space. Carbon monoxide is a colorless, odorless gas that can be fatal in high concentrations.

In addition to the immediate health risks, long-term exposure to low levels of carbon monoxide can adversely affect health.

Risk of a house fire: If a chimney fire goes unnoticed or is not properly addressed, it can escalate into a full house fire. This puts occupants at risk of injuries or even fatalities and can result in complete property loss.


When putting out a chimney fire, it is important to prioritize safety above all else. While leaving the task to the fire service is generally recommended, there are a few steps you can take if immediate action is necessary.

Close off the air supply by closing inlet valves and chimney hatches. If the fire has spread outside the flue, you can use water or a fire extinguisher to control the flames. However, it’s crucial to remember that extinguishing the fire in the flue should be left to professionals.

Call the fire service immediately and follow their guidance. Always prioritize your safety and the safety of others, and be prepared to evacuate if necessary.