### What is Moisture Mapping?
Moisture mapping is a procedure used to identify areas of moisture accumulation within wood framing and building materials. It involves the use of specialized equipment, such as moisture meters and infrared cameras, to measure and visualize the distribution of moisture in a structure.
### Acceptable Moisture Levels in Wood Framing
Moisture content in wood framing should be carefully controlled to ensure structural integrity and prevent damage. Excessive moisture can lead to the growth of mold, rot, and other issues that can compromise the safety and longevity of the building.
### Determining Acceptable Moisture Levels
The acceptable moisture level in wood framing depends on several factors, including:
- Species of wood: Different wood species have different moisture contents at equilibrium.
- Drying conditions: The moisture content of wood is influenced by the drying conditions during construction and storage.
- Exposure to moisture: Wood exposed to moisture sources, such as leaks or condensation, may have higher moisture levels.
### General Guidelines
As a general guideline, the acceptable moisture content in wood framing should not exceed:
- 19% for members in dry service conditions (e.g., interior framing)
- 25% for members exposed to occasional moisture (e.g., exterior sheathing)
It is important to note that these are only general guidelines, and specific moisture content requirements may vary depending on the project and local building codes.