What is the main characteristic of off-gassing related to materials?

Off-gassing refers to the release of volatile organic compounds (VOCs) and other chemicals from materials into the air, which can happen when products are new or have undergone a change in environment. The correct understanding of off-gassing shows that it typically occurs relatively quickly following the introduction of new materials, such as furniture, paints, or flooring, that are made of synthetic substances.

While some materials may emit gases over an extended period, many synthetic products are designed in a way that they emit their compounds within the first few days or weeks after installation or use. This initial period often reflects the highest levels of off-gassing, allowing for significant exposure to potentially harmful substances.

Recognizing that off-gassing primarily occurs quickly is important for assessing indoor air quality, especially in newly constructed or renovated spaces, where VOC levels may rise sharply, necessitating proper ventilation to mitigate health risks.