Indoor Air sciences CSMI Practice Exam

What is the minimum ply for polyethylene sheeting usually used for isolation barriers?

1. 6-mil

2. 10-mil

3. 2-mil

4. 4-mil

The correct answer is: 6-mil

The minimum ply for polyethylene sheeting typically used for isolation barriers is 6-mil. This thickness is significant because it provides a sturdy and effective barrier against moisture, dust, and other contaminants. In indoor air quality management, particularly during remediation activities, having a robust isolation barrier is crucial to prevent the spread of particulates and irritants. A 6-mil barrier is generally recognized as the standard for effective isolation in various applications, including construction and remodeling projects, where maintaining air quality is essential. Thinner sheets may not provide adequate protection, leading to potential infiltration of unwanted materials, which can compromise the integrity of indoor air quality.