Mold Assessment Technician Practice Exam

In water intrusion class 2, what percentage of building materials are wet?

1. Less than 5%

2. 5-40%

3. 40% or greater

4. 10-20%

The correct answer is: 5-40%

In water intrusion class 2, a key characteristic is that between 5% and 40% of the building materials are affected by moisture. This classification typically describes spaces with significant moisture presence but not complete saturation, often seen in structures where water incursion has occurred over a relatively short time, leading to significant but not overwhelming damage. Understanding moisture content in materials is crucial for proper assessment and remediation strategies. Class 2 categorization can include areas such as a lower portion of walls and flooring, which may have absorbed water but are not completely saturated, hence influencing the correct choice of percentages. The other options either suggest levels of wetness below or above the expected range for this class, leading to misclassification of the water intrusion severity.