Still on-going, what I have done to prove too myself where the issue was coming from ......I taped the areas in which I had altered.
Figured that I would find flies stuck to the tape even though upon careful inspection I had zero reason too believe that my silicone patchwork had failed.
Sure enough tons of flies and yet NOTHING stuck to the tape around my mediocre joints.
Decided this evening to climb into the attic and was expecting to find this pipe with some sort of break in it up there, I have been seeing dozens and dozens of flies, they are everywhere, has to be a major rupture somewhere.
Nothing to be found in the attic.
Climbed back down and again contemplated that the line I had run behind the wall using PVC must have an occlusion somewhere in one of the joints allowing the flies to escape, began accepting the fact that I would have to remove the wall again and start all over.
Make a long story shorter I have found the issue! Looking at the pipe thru the missing tile hole at the 2 o'clock position there is a rust area about 8-10 inches long as can be seen in the picture, hard to photograph cause its hard to get to, I had noticed it before and had poked at it feeling for soft spots but this time I used a small screwdriver and some force.
Sure enough the screwdriver penetrated. Then my pinky ( partial ) went thru.
Prob. not hard to imagine what followed after I removed my pinky.
Yep drain flies, waiting in line to escape.
Area is approx 3/8 wide at most, only the very center being soft.
Id like to understand what caused that, lived in the home maybe 10 years or so and it is obvious that this has been a problem a very long time, just constant rain pouring down the pipe maybe over the years caused this issue?
Now I need to figure out a way to patch this, I am sure the proper way to fix this would be to remove what is necessary of the wall, cut out the damaged section of pipe which is most probably even below the foundation and replace with new.
I would imagine that I could patch it somehow though and it would most likely outlast me. Would be nice to somehow neutralize the rust on the inside of the pipe at the least but I know of no way.
Any suggestions would be appreciated.
