How High Should A Vent Pipe Be Above The Roof

Many people mistakenly think that the pipe always has to be 2 feet above the roof peak.

How high should a vent pipe be above the roof.

The sketch shown here may help explain why the vent pipe should extend. 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. For 18 feet of run you would have a rise of 72 inches. The vent pipe rising above the tee is just 1 5 pipe and connects to another vent pipe that is coming up from the basement below.

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. I have a main vent and a sink vent and both are only 6 high above the roof. 2018 tim carter plumbing vent pipe is very important and supplies air from the atmosphere into the drain pipes. The vent pipe of the plumbing system must extend well above the roof line according to most plumbing codes.

This may seem suitable since the only purpose for the stack is to provide air and expel sewer gases. That vent pipe leaving the upper right corner of the photo is on its way out through the roof. Where is the best place to fit a waste outlet to a soil vent pipe. From any vertical surface the soil pipe also known as the vent stack or stack pipe provides air for the plumbing system.

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. Above the roof nor less than one 1 foot. Does anyone know what legal height requirements there are for vent pipes from memory i m pretty sure that it must only be a minimum of 300mm above the gutters that s to ensure storm water does not get into the sewer system. What is the minimum requirement for a soil vent above the window or roof the minimum a soil pipe should be above an opening area is 100mm.

Let s look at a couple of examples. A vent stack is not like a chimney which requires 2 higher than any roof within 10. The regulations were changed from the days that you needed those 1m or so long pipes jutting from your roof. The reason for this is so than there are no foul or gas entering the house so that there are no illnesses occurring.

If the pipe is farther than 10 feet from the roof peak it must be 2 feet above the highest point of the roof within 10 feet. You are letting air into the plumbing system of the house. According to the uniform plumbing code the soil pipe or stack pipe shall extend vertically not less than six 6 inches. The slope is about 4 high for every 12 horizontal.