The extension (to the open air) of a soil or waste stack through the roof membrane.
Vertical waste ventilation pipe in a plumbing waste system. Discharges gases and introduces fresh air into the system.
Also called a waste vent or soil vent, it is the extension of a soil or waste stack above the highest horizontal drain connected to the stack.
"Stack vent" means the extension of a soil or waste stack above the highest horizontal drain connected to the stack.
a vertical outlet in a built up roof system designed to relieve any pressure exerted by moisture vapor between the roof membrane and the vapor retarder or deck.
1. Soil or waste stack that extends through the roof of a building. 2. Soil or waste stack that is above the highest horizontal drain emptying into the stack.
An extension of a solid or waste stack above the highest horizontal drain connected to the stack. Sometimes called a waste vent or a soil vent.