
Candles are one of the biggest causes of fires within homes. There are several ways a candle can start a fire, from being left unattended to hot wax dripping onto flammable furniture or other decor. The flame can get too big due to too many wicks, contamination in the wax, or extra decorations, and candles can also overheat the surface they are placed on, starting a fire. The flame can then catch onto flammable materials such as curtains, and heated candle wax can even vaporize and become combustible.
| Characteristics | Values |
|---|---|
| Unattended candles | 21% of home candle fires |
| Flammable objects nearby | 50% of candle fires |
| Candles in the bedroom | 36% of home fires |
| Sleep was a factor | 10% of home fires |
| Weight distribution shifts and toppling over | Tea lights can flashover, igniting liquid wax and creating a larger flame |
| Wax fires | Use dry chemical or baking soda to smother the flames |
| Burning candles for too long | Recommended burn time is four hours |
| Incorrect use of water to extinguish flames | Can cause hot wax to splatter and break glass containers |
| Incorrect wick trimming | Can cause uneven burning, dripping, or flaring |
| Overheating surfaces | Candles can overheat the surface they are placed on, starting a fire |
| Fragrances | High fragrance content increases the likelihood of a fire |
| Secondary ignitions | Contaminants in the wax pool can act as secondary wicks |
| Containers | Flame reaching the wax pool at the bottom of a candle can cause a fire |
| Multi-wick container candles | Using too many wicks increases the risk of fire |
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What You'll Learn

Leaving candles unattended
Leaving a candle unattended is a serious fire risk and can lead to a house fire. In fact, candles are one of the biggest causes of fires within homes. Unattended candles can burn down a home and cause major damage.
Candles should never be left burning for longer than four hours and should be left to cool for at least two hours before being relit. It is also important to ensure that the wick ember is no longer glowing before leaving the room. If you accidentally leave a candle unattended, stop using candles and switch to LEDs or battery-operated flameless candles.
Candles should always be extinguished before leaving the room and kept out of the reach of children and pets. They should also be placed in holders to prevent them from falling over and kept away from flammable materials such as curtains, rugs, bedding, and paper.
It is also important to keep hair and loose clothing away from the flame and to never touch or move a candle while it is burning or while the wax is liquefied. To extinguish a candle, it is best to use a snuffler or spoon to prevent hot wax from splattering. Never use water to extinguish a candle as this can cause the hot wax to splatter and may cause a violent expansion of the wax, throwing hot coals into the air.
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Proximity to flammable objects
Candles are one of the biggest causes of fires within homes. One of the main ways a candle can start a fire is through proximity to flammable objects.
Firstly, it is important to keep burning candles away from flammable materials such as curtains, rugs, fabrics, furniture, mattresses, bedding, home decorations, paper, clothing, drapes, carpets, books, and combustible liquids. The flame from a candle can catch onto these flammable materials and start a fire. Even if a candle is not in direct contact with a flammable object, the heat from the flame can be enough to ignite nearby combustible materials. For example, heated candle wax can vaporize and become combustible, and the flame of the candle can then ignite the vapour and start a fire.
Secondly, it is important to keep candles away from each other. Candles should be placed at least three inches apart from one another. If they are too close together, they can melt each other, or create their own drafts that will cause the candles to burn improperly. This improper burning can increase the risk of fire.
Thirdly, it is important to keep candles away from anything that could potentially ignite. This includes hair, loose clothing, and children's or pets' toys. A candle's flame can easily catch onto these objects and start a fire if they are too close.
Finally, it is important to consider the placement of candles in relation to shelves and other surfaces. Candles should not be placed under shelves, as the heat from the flame can rise and potentially ignite any flammable materials on the shelf. Additionally, candles can overheat the surface they are placed on, starting a fire.
Overall, it is crucial to maintain a safe distance between candles and any flammable or combustible materials to prevent fires.
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Wax fires and how to extinguish them
Wax fires can be started by candles in many ways, from being left unattended to hot wax dripping onto furniture. It is important to remember that wax fires are dangerous and can lead to serious house fires. To prevent wax fires, there are several safety measures that can be taken. These include:
- Never leaving a candle unattended.
- Keeping candles away from flammable objects such as curtains, rugs, or clothing.
- Using a candleholder specifically designed for candle use, that is heat-resistant and sturdy.
- Keeping the wick trimmed to avoid any carbon build-up.
- Avoiding drafts, vents, or air currents to prevent rapid or uneven burning.
If a wax fire does occur, it is important to know how to extinguish it properly. Here are some steps to take:
- Never use water to extinguish a wax fire. Water can cause the hot wax to spatter, sometimes causing burns and increasing the risk of spreading the fire.
- Use a dry chemical or baking soda to smother the flames.
- Cover the flames with a metal lid, a cookie sheet, or a fire blanket to restrict oxygen and extinguish the fire.
- Using a candle snuffer is another safe way to extinguish a candle, as it prevents hot wax from splattering.
- Allow the candle to cool completely before moving it or disposing of it.
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Candle placement and stability
Firstly, never leave a candle unattended. Unattended candles are a leading cause of preventable fires. Always extinguish a candle before leaving the room and never fall asleep with a candle burning.
Secondly, keep candles away from flammable materials. This includes furniture, curtains, rugs, bedding, fabrics, paper, and combustible liquids. Maintain a distance of at least three inches between burning candles to prevent them from melting each other or creating drafts that could lead to improper burning.
Thirdly, ensure candle stability by using proper holders or placing them in suitable locations. Avoid surfaces where they might be knocked over by children, pets, or anyone else. Tea candles, for example, should be used with proper holders to prevent them from toppling over.
Additionally, keep hair and loose clothing away from the flame to prevent accidents. Do not touch or move a candle while it is burning or while the wax is liquefied. Allow the candle to cool completely before handling.
Lastly, follow manufacturer guidelines for burn time and proper use. Generally, it is recommended that candles burn for no longer than four hours and are allowed to cool for at least two hours before being relit. Always trim the wick to a safe length (usually ¼ inch) before lighting to ensure proper burning and prevent dripping or flaring.
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Wicks and trimming
Firstly, ensure that the candle is completely cool and not lit. Use a wick trimmer, scissors, or a simple pair of toenail clippers to trim the wick to about a quarter of an inch. This length is ideal for an even and clean burn. Dispose of the excess wick in a bin, and avoid leaving it in the candle wax.
If you trim the wick too short, you can expose more wick by melting the surrounding wax with a wand lighter and then slowly pouring out the melted wax. Alternatively, you can use a butter knife to gently carve out the wax around the wick.
A wick that is too long can cause the candle to burn unevenly, leading to wax buildup on one side of the candle and wasted wax. It can also cause the candle to burn too hot, resulting in soot buildup, which can damage your candle and negatively impact your indoor air quality. A trimmed wick gives the flame a nice, even shape and helps to prevent the buildup of debris near the base of the wick, which can cause the candle to burn hotter and faster than intended.
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Frequently asked questions
Candles can start fires when left unattended, or when they are placed near flammable objects. The wax can also catch fire, and if a candle is left to burn down completely, the uneven weight distribution can cause it to topple over.
Here are some safety tips to prevent candle fires:
- Never leave a candle unattended.
- Keep candles away from flammable objects such as curtains, bedding, and paper.
- Keep candles out of the reach of children and pets.
- Trim the wick to 1/4 inch before lighting.
- Do not burn a candle for longer than four hours.
- Let the candle cool for at least two hours before relighting.
If a candle fire starts, do not use water to extinguish it. Instead, use a snuffer, lid, or spoon to smother the flame. You can also use a dry chemical or baking soda to put out a wax fire.










































