Quick Answer
Covering firewood stacks with a tarp is generally not recommended, as it can lead to mold and mildew growth, as well as trapping moisture inside the stack. Instead, it's better to leave them uncovered to allow for proper airflow and drying.
Drying Firewood: The Importance of Airflow
When stacking firewood, it’s essential to consider the drying process. Firewood needs to dry out to a moisture level of 20% or lower to burn efficiently and safely. Leaving the stack uncovered allows for better airflow, which helps to speed up the drying process.
For example, a 4-foot by 8-foot stack of firewood can lose 1-2 pounds of moisture per day when exposed to good airflow. This can lead to significant savings in terms of time and energy when trying to dry the wood. On the other hand, covering the stack can slow down the drying process and even lead to mold growth.
Stacking Techniques for Good Airflow
To maximize airflow and drying, it’s recommended to stack firewood in a manner that allows for good airflow around each piece. This can be achieved by stacking the wood in a crisscross pattern, with each layer of wood alternating direction. This allows for air to pass through the stack more efficiently.
Firewood Storage Considerations
When storing firewood, it’s also essential to consider the location and orientation of the stack. Ideally, the stack should be placed in a spot that receives good airflow, such as an open area or a location with a slight breeze. Additionally, the stack should be placed on a raised platform or a gravel base to allow for good drainage and airflow.
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