**Moisture Mapping** is a valuable tool for evaluating the moisture content of internal walls. It helps identify areas of excessive moisture that could lead to damage or health hazards. Understanding acceptable moisture levels is crucial for proper maintenance and remediation. ### Acceptable Moisture Levels The acceptable moisture level for internal walls varies depending on several factors. Generally, moisture content should be below 15%. - **Walls with Gypsum Board:** <15% - **Walls with Wood Studs:** <12% - **Walls with Concrete Masonry Units:** <10% ### What Should Moisture Readings Be for Internal Walls? Moisture readings for internal walls are typically taken using a moisture meter. It measures the electrical resistance of the wall material, which correlates to the moisture content. | Moisture Range | Implication | |---|---| | <15% | Acceptable moisture level | | 15-20% | Potential moisture problem, requires attention | | >20% | Probable moisture problem, immediate remediation necessary | Exceeding acceptable moisture levels can indicate leaks, condensation, or other sources of water intrusion. Ignoring high moisture levels can lead to mold growth, structural damage, and health issues. Prompt diagnosis and resolution of moisture issues are essential to maintain healthy indoor environments and prevent costly repairs.