Quick Answer
Certain firewood types produce more ash when wet, particularly those high in resin or sap. These types include pine, fir, and spruce. They can be challenging to burn in rainy conditions, as the excess moisture in the wood can make it difficult to start and maintain a fire.
Firewood Characteristics and Moisture Content
When selecting firewood for rainy conditions, it’s essential to choose types that are lower in moisture content and resin. Hardwoods such as oak, maple, and ash are generally better options than softwoods. For example, a cord of dry firewood typically has a moisture content of around 20%. In contrast, a cord of pine may have a moisture content of up to 30%. When burning wet wood, the excess moisture can release a significant amount of steam, making it difficult to maintain a steady flame.
Techniques for Burning Wet Firewood
If you’re forced to burn wet firewood in rainy conditions, there are a few techniques you can use to improve its burnability. First, try to dry the wood as much as possible by storing it in a well-ventilated area. You can also use a fire starter or tinder to help get the fire going. Additionally, you can use a technique called “wet wood burning,” where you burn the wood in a way that allows the excess moisture to escape. To do this, build a small fire pit and place the wet wood in the center. Light the fire and allow it to burn for several hours, slowly drying the wood as it goes. This technique can help reduce the amount of ash produced and make the fire more manageable.
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