Plumbing Vent Pipe Height Above Roof

A vent stack is not like a chimney which requires 2 higher than any roof within 10.

Plumbing vent pipe height above roof.

Above the roof plumbing vent height. The plumbing vent also known as a vent stack helps regulate the air pressure in your plumbing system. Just as drain pipes remove water and waste from your home the plumbing vent pipe also known as a plumbing air vent removes gas and odors. The re vent is the only exception since it runs horizontally.

However it needs to be at least six inches above your fixture s flood level to keep from getting wet. I have a main vent and a sink vent and both are only 6 high above the roof. You are letting air into the plumbing system of the house. On a sink that would be either the rim or overflow hole.

All open vent pipes that extend through a roof shall be terminated at least 6 inches 152 mm above the roof and not less than 2 inches 51 mm above the invert of the emergency overflow except that where a roof is to be used for any purpose other than weather protection the vent extensions shall be run at least 7 feet 2134 mm above the roof. Upc i 906 1 and 906 2. All open vent pipes that extend through a roof shall be terminated at least number typically 6 inches mm above the roof except that where a roof is to be used for any purpose other than weather protection the vent extensions shall be run at least 7 feet 2134 mm above the roof. It also allows fresh air into the plumbing system to help water flow smoothly through the drain.

The slope is about 4 high for every 12 horizontal. A note on the main drain. Vent pipes should extend to outdoors above the building roof and should terminate vertically not less than 6 above the roof surface nor more than 24 and must be at least 12 from any vertical surface such as a nearby sidewall.