Moisture Mapping is a crucial process in the lumber industry, providing valuable insights into the moisture levels of wood, ensuring optimal quality and performance. One key aspect of Moisture Mapping is understanding Wood Moisture Content, specifically the question:

Can Wood Contain Over 100% Moisture Content?

The answer is yes. Wood can contain moisture levels that exceed 100%. This phenomenon occurs due to the way moisture is calculated in wood. Moisture Content is measured as a percentage of the weight of the water in the wood compared to the weight of the dry wood. When wood is saturated, it has absorbed all the water it can hold; at this point, it is said to have reached its Fiber Saturation Point (FSP).

However, wood can continue to absorb water beyond its FSP, resulting in moisture levels above 100%. This excess water, known as “free water,” is not bound to the wood’s fibers and can freely move within the wood’s structure. Free water has minimal impact on the wood’s strength and properties.

The presence of over 100% moisture content in wood is typically associated with situations where the wood has been subjected to excessive moisture, such as flooding or long-term exposure to rain. Understanding this phenomenon is essential to prevent potential issues, such as decay and mold growth. By using Moisture Mapping techniques, professionals can effectively measure and monitor moisture levels in wood, ensuring the timely detection and remediation of any moisture-related problems.