Moisture Mapping Assessing Acceptable Moisture Levels in Wood Framing

What is Moisture Mapping?

Moisture mapping is a non-destructive technique used to determine the moisture content of wood framing and other building materials. This information is critical for identifying areas of excessive moisture that could lead to costly repairs or structural damage.

Acceptable Moisture Levels

The acceptable moisture level in wood framing varies depending on the specific application. However, the general rule of thumb is that the wood should not exceed 19% moisture content (MC). Excessive moisture can promote the growth of mold, rot, and other wood-destroying fungi, weakening the structural integrity of the building.

What is an Acceptable Moisture Level in Wood Framing?

  • The recommended moisture content for wood framing ranges between 12% and 15%.
  • Values exceeding 19% should be addressed promptly to prevent potential damage.
  • Values below 12% are acceptable but may require additional monitoring to ensure they do not drop significantly, which could lead to shrinkage or cracking.

Moisture levels can vary significantly within a single building due to environmental factors, such as changes in temperature and humidity. It is crucial to conduct thorough moisture mapping inspections regularly, especially in areas prone to moisture ingress or where wood framing is exposed to extreme weather conditions.