Vent Stack Thru Roof

It is a vertical pipe attached to a drain line and runs through the roof of your home.

Vent stack thru roof.

The vent stack is the pipe leading to the main roof vent. The uppermost part of the waste stack that connects to the uppermost part of the roof is the stack vent. It also allows fresh air into the plumbing system to help water flow smoothly through the drain pipes however no water runs through the plumbing vent pipe. A stack vent is the extension of the waste stack to provide venting.

Plumbing vent pipes are connected to your drain system and are needed for water to drain properly. At the building drain system s lowest point the drain waste vent is attached and rises usually inside a wall to and out of the roof. Running a vent pipe out of the roof takes some careful preparation. When water drains air must replace the space that was taken up by the water.

Increasing the vent opening to three inches just before it goes through the roof in frost prone areas is another precaution that prevents blockages. All the vents connect to it through branch lines and it vents the main toilet the most important plumbing fixture in most houses. The stack has to run the most direct route through open air or be ventilated to extend to open air. The main stack is the heart of the venting system.