Wood moisture content, often abbreviated as MC, refers to the amount of water present within the wood fibers. It is typically measured as a percentage of the oven-dry weight of the wood. Moisture Mapping involves assessing the variation in moisture content across a wooden structure or surface.
When treating wood, the preferred moisture content will vary depending on the specific treatment method being used. Here are some general guidelines:
* Optimal moisture content: 25-30%
* This range allows for effective penetration of preservatives into the wood.
* Preferred moisture content: 25-30% or less
* A lower moisture content facilitates the removal of air and moisture from the wood, allowing for better penetration of preservatives.
* Moisture content during modification: Typically below 10%
* Low moisture content ensures that the wood is protected against decay and expansion during the thermal modification process.
* Moisture content: Around 12-15%
* A slightly higher moisture content helps the preservatives absorb more effectively into the wood.
It is essential to ensure that wood is adequately dried before any treatment is applied. This helps prevent shrinkage, movement, and the potential for checking or splitting during treatment and service.