In which setting are single wall vents not permitted?

Single wall vents are not permitted in residential occupancies primarily due to safety concerns related to fire hazards and the potential for carbon monoxide buildup. In residential settings, the presence of combustible materials and the intimate living environment make it crucial to adhere strictly to safety regulations to mitigate fire risks. Utilizing single wall venting in these structures can significantly increase the chances of heat transfer to surrounding combustible materials, potentially leading to fires.

Contrast this with commercial buildings and public facilities, where different standards of construction and materials are often used. These environments can accommodate more robust venting methods and are typically subjected to stricter fire safety codes that allow for specific vent installation practices when proper materials and methods are employed.

Given the heightened risk associated with residential occupancies, relevant codes and best practices prohibit the use of single wall vents to enhance safety for inhabitants and comply with local building regulations.