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Why Does Burning Wood Pop. Trapped moisture can also cause wood to pop and crackle from the creation of steam. As the wood heats up, the warmth penetrates deep into these pockets.
As the wood heats up, the warmth penetrates deep into these pockets. This same principle rings true when burning wet or moist firewood. At that time, the “popping.
As they expand, they put tremendous pressure on the walls of the pockets. The holes created by the insects will give the gasses an escape route. Trapped moisture can also cause wood to pop and crackle from the creation of steam.
Once the fire burns the wood. These air pockets fill narrow passages within the wooden log. Gases expand rapidly when heated.
Unlike wood, water doesn’t convert into heat when burned. As the wood heats up, the warmth penetrates deep into these pockets. This same principle rings true when burning wet or moist firewood.
The popping noise occurs when air pockets in the wood are released. The sap/pitch liquifies, then vaporizes as the temperature increases. See answer (1) best answer.
In all actuality, these popping and cracking sounds are coming from a chemical reaction inside of your fireplace. Some will get stuck in the wood. As the trapped moisture heats up, it will.
