plumbing vents: The foibles of stinky plumbing traps and vents! - 06/06/10 06:43 AM
Does your sink or shower smell?  Do they talk back to you (gurgle) when draining.  I'd bet you have a venting or trap problem that you're not aware of yet.  Plumbing Drain, Waste and Vent systems carry away waste while keeping the sewer gas smell from coming back up into your house.
You can read more about the right way on InspectaPedia as I just want to show you some of the
"DO NOT DO THIS" pictures of stuff I've found.
Plumbing Drain Vents & Plumbing Noises  http://www.inspectapedia.com/plumbing/Plumbing_Noises.htm#bannertop
Drain piping should always have a smooth interior wall.  Do NOT use the … (7 comments)