How High Should My Vent Pipe Extend Above My Roof

According to the uniform plumbing code the soil pipe or stack pipe shall extend vertically not less than six 6 inches.

How high should my vent pipe extend above my roof.

How high should the plumbing vents be above there roof. Extensions of vent pipes through a roof shall be terminated at least 12 inches above such roof unless a roof is to be used for any purpose other than weather protection. Above the roof nor less than one 1 foot. 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.

Open vent pipes that extend through a roof shall be terminated at least 6 inches 152 mm above the roof or 6 inches 152 mm above the anticipated snow accumulation whichever is greater except that where a roof is to be used for any purpose other than weather protection the vent extension shall be run at least 7 feet 2134 mm above the roof. The vent pipe of the plumbing system must extend well above the roof line according to most plumbing codes. Measure from the upper end of the connector to the underside of the roof flashing and add 16 inches. If a roof is to be used for any purpose other than weather protection the vent shall be extended at least seven 7 feet above the roof.

If the pipe is farther than 10 feet from the roof peak it must be 2. As i recall some plumbing codes state the top of the vent pipe shall be one or two feet higher than a level line 10 feet long from the vent pipe location to the roof. This calculation from example 1 alone would give you a solid working height but if you are close to your peak then you might have more pipe height than you actually need. I have a main vent and a sink vent and both are only 6 high above the roof.

The top of a chimney pipe must extend at least 2 feet above the peak of the roof if the pipe is within 10 feet of the peak. This accounts for the 4 inch tapered head of the flashing and the minimum 12 inches of vent.