Surface moisture meter: Measures moisture content near the surface of the wall. *
Infrared camera: Detects temperature differences indicative of moisture presence. *
Hygrometer: Measures relative humidity levels within the wall cavity.
Test results are typically expressed as either percentage of moisture content by weight or relative humidity. Reference values vary depending on the material being tested, but generally: *
Below 15% moisture content: Acceptable range *
15-20% moisture content: Warning range (monitor closely) *
Above 20% moisture content: High risk of damage (remedial action required)
Building materials: Different materials have varying moisture tolerance levels. *
Environmental conditions: Temperature, humidity, and ventilation can affect moisture levels. *
Source of moisture: Leaks, condensation, or groundwater infiltration may contribute to excess moisture.
Fixing leaks or addressing sources of moisture *
Improving ventilation and air circulation *
Installing moisture barriers (e.g., vapor barriers) *
Applying chemical treatments to prevent mold growth *
Structural repairs in severe cases
If you suspect moisture issues in your walls, it's crucial to consult a qualified professional for proper testing and interpretation of results to ensure accurate diagnosis and effective remediation.