Moisture Mapping is a crucial process for identifying areas with excess moisture within a building. Understanding acceptable moisture levels helps ensure the comfort, safety, and structural integrity of a property. In this blog, we’ll explore the topic of Moisture Mapping, focusing on moisture levels for internal walls.
Excessive moisture in internal walls can lead to a range of issues, including mold growth, structural damage, and respiratory problems for occupants. The acceptable moisture level for internal walls varies depending on the material and construction method. However, as a general rule, moisture levels below 15% are considered safe.
When conducting Moisture Mapping on internal walls, readings should be taken in various locations to obtain an accurate assessment. The following table provides guidelines for acceptable moisture readings based on ASTM D4444:
| Material | Acceptable Moisture Reading (%) |
|---|---|
| Gypsum wallboard | <15 |
| Plaster | <15 |
| Wood | <18 |
| Brick | <15 |
| Concrete | <15 |
If moisture readings exceed these levels, further investigation is recommended to determine the source of the excess moisture and implement appropriate remediation measures.