### Understanding Wood Moisture Content
Wood moisture content, a crucial factor in wood’s performance, refers to the amount of water present within its cellular structure. It is typically expressed as a percentage of the wood’s dry weight.
### The Paradox of Over 100% Moisture Content
Contrary to common belief, wood can indeed contain moisture content exceeding 100%. This phenomenon, known as “above fiber saturation point” (AFSP), occurs when wood absorbs water beyond the point where its cell walls are fully saturated. The excess water accumulates in the cell cavities, resulting in a moisture content greater than 100%.
AFSP frequently occurs in waterlogged or very humid environments. Understanding this phenomenon is paramount for moisture mapping purposes, as it ensures that moisture content readings accurately reflect the wood’s true condition. It also highlights the importance of moisture control measures to prevent excessive moisture accumulation and potential wood damage.