Sink Roof Vent

In general all vents must rise through the roof but they are usually tied together into one main stack.

Sink roof vent.

In most cases it s a vertical pipe that ties into the main vent stack which goes through the roof. A vent is a necessary part of the drain system for any plumbing fixture. Which helps the system move water through the drainage pipes each time a toilet is flushed or a sink is drained. From the side angle it becomes easier to imagine what these pipes might look like behind your bathroom or kitchen walls.

Notice how the main vent and waste pipe remain separated behind the sink only connecting via the attached went pipe. Plumbing air vents also prevent sewer gases from entering the. Without venting the negative pressure caused by the flow of draining water can potentially suck water out of the drain trap and allow sewer gases to enter the home. When a sink isn t draining properly and the waste line isn t clogged you may need to take a look upward to find the culprit up toward the vent system.

Both sinks connect at one point sharing a common true vent to the stack. It channels the exhaust gases to the vent and helps maintain proper atmospheric pressure in the waste system. Its purpose is to equalize pressure in the pipes and prevent a vacuum from forming as the fixture drains. The drain in every plumbing fixture in your house including all the sinks must include a vent.

When a vent becomes clogged it shows up within the home as.