**Moisture Mapping** is a critical technique for assessing the moisture content of building materials. Moisture levels that exceed acceptable limits can compromise structural integrity, promote mold growth, and impact indoor air quality. This blog discusses acceptable moisture levels and provides insights into moisture readings for internal walls.

### Acceptable Moisture Levels

Moisture Mapping utilizes specialized equipment to measure moisture content. Acceptable moisture levels vary depending on the material. Generally, internal walls should have a moisture content between:

* **5% – 12%:** For gypsum board (drywall)
* **4% – 8%:** For plaster
* **10% – 20%:** For concrete

**What Should Moisture Readings Be for Internal Walls?**

* **Below 5%:** Moisture levels below 5% can indicate inadequate moisture for structural stability and may lead to cracking.
* **5% – 12%:** Ideal moisture range for gypsum board (drywall), maintaining structural integrity and preventing mold growth.
* **13% – 16%:** Elevated moisture levels that warrant further investigation to identify potential water intrusion or leaks.
* **17% and Above:** High moisture levels indicating significant water intrusion or structural damage, requiring immediate attention.

**Conclusion**

Moisture Mapping is essential for assessing moisture levels in internal walls. By understanding acceptable moisture levels, property owners and professionals can identify potential moisture issues, prevent damage, and maintain a healthy indoor environment.