I am beginning a oproject to finish off an attic. We bought house about 1 year ago, 10-year old house. There are two vent pipes in attic that need to be moved a few feet. Standard stuff - Sch 40 PVC coming up through floor, poking through roof boot.
Each pipe is about 5 feet from floor to roof. In the middle of each there is a simple coupling fitting. I assumed these were placed for cleanout purposes. When I started working on the first pipe, I found that the pipe section between the coupling and the roof was not glued, just dry fit. There was also some evidence of past leaking there, although I had never noticed that before.
The real surprise was that after loosening the section in question, there was a plug in the second pipe section going down to the floor and to the fixtures below. I checked the other vent pipe that needs to be moved - same deal. Each pipe had a common plug with a nut on top.
I have never noticed any problems with fixtures draining, although every now and then there is a very slight odor from a shower drain (we have septic system).
I can only guess that the plug was there during construction for inspection purposes, and never removed?
I went ahead and moved the first vent pipe, no problem. Evereything below works fine. But before I finish up, I wanted to check to be sure there is no legitimnate reason for the plugs being there.
Any insights much appreciated
Each pipe is about 5 feet from floor to roof. In the middle of each there is a simple coupling fitting. I assumed these were placed for cleanout purposes. When I started working on the first pipe, I found that the pipe section between the coupling and the roof was not glued, just dry fit. There was also some evidence of past leaking there, although I had never noticed that before.
The real surprise was that after loosening the section in question, there was a plug in the second pipe section going down to the floor and to the fixtures below. I checked the other vent pipe that needs to be moved - same deal. Each pipe had a common plug with a nut on top.
I have never noticed any problems with fixtures draining, although every now and then there is a very slight odor from a shower drain (we have septic system).
I can only guess that the plug was there during construction for inspection purposes, and never removed?
I went ahead and moved the first vent pipe, no problem. Evereything below works fine. But before I finish up, I wanted to check to be sure there is no legitimnate reason for the plugs being there.
Any insights much appreciated