**Moisture Mapping** is a crucial step in identifying and mitigating moisture issues within a building. Moisture levels in internal walls need to be carefully monitored to ensure a healthy and safe indoor environment.
### Acceptable Moisture Levels for Internal Walls
The acceptable moisture content for internal walls varies depending on the material they are composed of. Generally, the following guidelines are observed:
**Material:** | **Acceptable Moisture Content:**
—|—|
Gypsum Wallboard | Less than 12%
Plaster | Less than 10%
Wood | Less than 16%
### What Should Moisture Readings Be for Internal Walls?
**Using a moisture meter, the following moisture readings for internal walls are considered acceptable:**
– **Below 20% Relative Humidity (RH)**: Dry, no moisture concerns.
– **20-30% RH**: Slightly moist, may indicate minor moisture intrusion.
– **30-40% RH**: Moderately moist, requires investigation for potential moisture sources.
– **Above 40% RH**: High moisture content, requires immediate attention to prevent further damage.
**Note:** These moisture readings are general guidelines. Deviations from these values may occur depending on factors such as climate, construction methods, and building materials. It is recommended to consult a qualified professional for specific advice on acceptable moisture levels for internal walls in your particular location.