Moisture Mapping Understanding Wood Moisture Content and Mold Growth

Moisture mapping is an essential aspect of wood preservation, as it helps identify areas of high moisture content that can lead to mold growth and structural damage. Wood moisture content plays a critical role in determining the susceptibility of wood to mold infestation.

Wood Moisture Content

Wood moisture content refers to the amount of water present within the wood fiber. It is typically measured as a percentage of the dry weight of the wood. Wood can be classified into three main moisture content categories:

  • Green wood: Moisture content of over 20%
  • Air-dry wood: Moisture content between 10% and 20%
  • Kiln-dry wood: Moisture content below 10%

At what moisture content does mold grow on wood?

Mold generally requires a moisture content of 20% or higher to establish and grow. At this moisture level, the wood provides a favorable environment for mold spores to germinate and thrive. However, it is important to note that certain species of mold can grow in environments with lower moisture content.

The presence of mold on wood can result in a range of issues, including structural damage, discoloration, and health concerns for individuals exposed to mold spores. Therefore, it is crucial to control moisture levels in wood to prevent mold growth. Moisture mapping can assist in identifying and mitigating areas of high moisture content, helping to protect wood structures and ensure their longevity.