Mold Remediation Certification Practice Exam

Which materials are classified as non-porous?

1. Materials that absorb moisture easily

2. Materials that do not absorb moisture or have been treated

3. Materials with a high fiber content

4. Materials not suitable for construction

The correct answer is: Materials that do not absorb moisture or have been treated

Non-porous materials are characterized by their ability to repel moisture, meaning they do not absorb water or other liquids. These materials either have a naturally impermeable structure or have been specially treated to enhance their moisture resistance. This quality is crucial in mold remediation because non-porous surfaces are less likely to support mold growth, as mold requires moisture to thrive. Examples of non-porous materials include glass, metal, and certain plastics, which do not allow moisture to penetrate their surface, making them easy to clean and disinfect. This attribute is especially important in environments prone to dampness, as it helps reduce the potential for mold contamination. In contrast, the other options highlight characteristics that do not align with the definition of non-porous materials. Materials that absorb moisture easily are clearly porous, while those with high fiber content typically indicate a porous structure as well. Materials labeled as unsuitable for construction do not directly address their porosity and could span a range of properties irrelevant to moisture absorption.