Wood, the quintessential hygroscopic material, has the ability to absorb and release moisture depending on environmental conditions.
This causes changes in the material’s volume and shape, which can affect its quality and durability. For this reason, wood must undergo a seasoning process, which involves reducing internal humidity until it reaches a level that is in equilibrium with the surrounding air.
But how can you measure wood moisture? And why is it important? In this article, we’ll try to answer these questions, illustrating the main methods and products for determining moisture content and the factors that influence it.
Calculate the percentage of moisture in wood
“Wood moisture” refers to the amount of water present in the material relative to its weight without water. To measure it, the wet and dry wood are weighed and a ratio is calculated.
Moisture can be influenced by several factors:
- temperature: The higher the air temperature, the faster moisture is lost from the wood surface;
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relative humidity: The higher the relative humidity, the smaller the vapor pressure difference between the wood and the atmosphere, and therefore the slower the drying rate;
- air circulation;
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wood size and shape: These affect the exposed surface area and resistance to moisture flow;
- wood defects and treatments.
The importance of monitoring humidity: an essential step for the quality and safety of wood products
Wood moisture content is extremely important because it affects many aspects of the material, such as weight, volume, strength, hardness, insulation, and durability.
Measuring moisture content is therefore essential to ensure the quality and safety of wood products, both during production, transportation, and processing, as well as during use and maintenance.
Isoelectric products
Isoelectric wood moisture meters are electronic meters that allow you to easily, conveniently, and safely determine the percentage of water contained in wood.
They are essential for monitoring the wood drying cycle, preventing mold, warping, or cracking, and ensuring the quality and durability of the final product.
