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Why Does Wood Pop. Firewood popping occurs when burning wood has a high moisture content. Gas needs more space as it expands into the pocket trapped inside the wood.
Some will get stuck in the wood. This is because the moisture in the wood begins to evaporate quickly, while also pushing the moisture out of the wood in the form of more steam. These gases escape either by an explosion or by finding their way through holes caused by insects.
Firewood popping occurs when burning wood has a high moisture content. The holes created by the insects will give the gasses an escape route. Some will get stuck in the wood.
Typically, when the moisture in the wood is high, the pops and crackling noises are a lot more frequent. When temperatures rise and, or humidity levels rise, your wood will expand and if there has been an insufficient expansion gap left around the perimeter of your room, the risk is that the wood will pop up as it expands, because there’s nowhere for it to go. Once the gas pressure builds up it will create an energy burst with mini explosion.
Gas needs more space as it expands into the pocket trapped inside the wood. Gas is created by trapped moisture locked in small pockets within the wood. As the wood burns the moisture is heated, and as the moisture is heated it expands and turns into gas.
In basic terms, it has something to do with the combustion gases escaping from the wood. As the gas escapes, the fire will emit an audible pop or crack. This is because the moisture in the wood begins to evaporate quickly, while also pushing the moisture out of the wood in the form of more steam.
