Vent Pipe Height Above Roof

This may seem suitable since the only purpose for the stack is to provide air and expel sewer gases.

Vent pipe height above roof.

Above the roof plumbing vent height. A vent terminal and depending if the roof is strictly for weather protection it terminates about 24 above the roof. Single wall metal pipe shall extend at least 2 feet 610 mm above the highest point where it passes through a roof of a building and at least 2 feet 610 mm higher than any portion of a building within a horizontal distance of 10 feet 3048 mm. For 18 feet of run you would have a rise of 72 inches.

You should be able to cut that vent shorter but stay above the roof line. On a sink that would be either the rim or overflow hole. I am sure the plumber put it at that height for the inspector. The re vent is the only exception since it runs horizontally.

You must also consider the snow line so the pipe does not get covered. Upc i 906 1 and 906 2. Many people mistakenly think that the pipe always has to be 2 feet above the roof peak. 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.

We install our roof vents 6 to 8 inches above the roof line. According to the uniform plumbing code the soil pipe or stack pipe shall extend vertically not less than six 6 inches. Single wall metal pipe shall terminate at least 5 feet 1524 mm in vertical height above the highest connected equipment draft hood outlet or flue collar. For those stinky vents consider installing odor hog vent caps see image on the roof vents.

Let s look at a couple of examples. However it needs to be at least six inches above your fixture s flood level to keep from getting wet. From any vertical surface the soil pipe also known as the vent stack or stack pipe provides air for the plumbing system. Above the roof nor less than one 1 foot.

If the roof area is for people then it is 7 ft above the roofing surface. You are close to your eave and you find that your measurement is 18 feet from peak to penetration on a 4 12 pitch see figure 3.