Plastic Pipe Venting Basics Plastic Pipe Venting Basics

Supply and waste pipe venting is essential to a properly working plumbing system in your home. Without the use of pipe venting your water will not flow properly if at all. There is also the problem of sewage gases that will be released into your home if there is not adequate venting of the pipe.

Pipe Venting with PVC Plastics

For the most part, most of the pipe that is used for venting in today's homes is made out of 1 1/2 inch, or 2 inch PVC pipe. These pipes are easy to work with and make adding new vent pipes into the main pipe much easier than trying to work with galvanized pipes. 

Vent Pipe Needs

Every home needs to have a vent pipe that goes through the roof. Besides this one vent pipe there also needs to be a vent pipe for every toilet, sink, tub, or shower. This pipe must be installed within 10 feet of the trap of each of the fixtures. If the water has to drain without a vent that is close enough to it, it will sit in the trap and either cause the water not to flow correctly or the sewage to remain stagnant. 

Vent Pipe for Each Room

There are some instances where you do not need an entirely new drain for each of the fixtures. If the drain pipe goes directly into a vent pipe, then that is adequate enough. However, you will need to have a different vent pipe for each bathroom. This is especially true if they are in opposite ends of the house. 

Plan for Vent Pipes

When remodeling a home you should take the time to factor in where the drain pipes are going to and how they will work into the pipe venting of the home. Try to situate most of the fixtures within the same area so that you do not need to run multiple vent pipes in the same area. 

Weatherproof Vent Pipes

When working with the vent pipes that come through the roof you want to make sure that they are sealed against any type of weather. Using caulking and roof cement around the venting pipe will protect from rain, snow and ice. The pipe venting will also need to be protected against animals, and debris. There are times when birds will attempt to build their nest on the top of the vent pipe. You should take some time to inspect the vent pipe and clean off any debris that is around the mouth. Use a mesh cover to also collect leaves, branches, and other things that can blow into the pipe.

Stabilize with Clamps

Working the PVC vent pipe is very easy to do. It is also easy to puncture with screws and nails. As you install the pipe vent you should brace them to the surrounding studs through the use of band clamps that can be removed if you need to. 

Dry Fit Vent Before Making Permanent

When working with the PVC vent pipe make sure that you dry fit the pipe before you make the permanent connections. This will enable you to move things around if they are not going to work they way it needs to.

Got a New Project You're Proud of?

Post it on Your Projects!