Fix a leak in a drain pipe - plumbing.straw.DWVleak PEP BB

I originally posted this in the wrong spot. https://permies.com/t/177178/pep-plumbing-hot-water/Fix-leak-DWV-pipe
I recently had to fix a broken storm water pipe. The original builders of the house only allowed a 100mm space between the pipe and top of the soil. I think the local code is supposed to be 300mm. Oh well, it's fixed now anyway.

Needed to fix a home owner’s drain pipe leak. Someone tried duck tape. Also left burrs on the inside of the pipe.  I unhooked it, cleaned and deburred it.  Then glued it back together.  Always remember to give it a quarter turn so it bonds properly.  

I have fixed many leaks in my life with nothing more than long strips of rubber cut from scrap inner tubes, usually bike inner tubes but some heavy strips I've used from tractor inner tubes.  Simply start wrapping by holding the end of one against the pipe beside the crack or hole till you can catch the end under the strip as it comes around, and then keep going, overlapping and keeping good tension on it.  Add another strip by splicing under the end of the last one.  If the leak isn't spraying badly you can just do it with the water on and then you will know when you are done.  If it's out in the sun, put duct tape or some such over all since sun is the enemy of rubber.   I have patched propane and high pressure steam pipes this way, and some of these fixes have been in place for years!  It is a good way to make joints between otherwise incompatible types of materials as well.

Hey PEP-folks,

Part 3 of a drain saga here, following https://permies.com/p/2856463 and https://permies.com/p/2856467.

This is a kitchen sink drain, and had a handful of weird issues, like a non-standard vent hole (drilled in the pipe) and some intermittent leaking when heavily loaded with lots of water all at once. The troubleshooting began with examining the cross-drilled holes at the top of the drain stack, but the pipes felt very, very wiggly. Then I opened up the P-trap, so I had more freedom of motion, and lo and behold, the whole DWV assembly, from a coupling below the sani-tee, lifted off in my hand.

What the...

Upon examination, the pipes were lightly adhered with a silicone caulk. Jeepers. This had, of course, failed to maintain a watertight bond. The pieces were all the correct lengths, so in order to avoid spending money, I chose to scrub all the gooped joints thoroughly and rebuild the stack using real ABS glue. This dried overnight before testing, and the first test produced.... water coming up the vent.

So I opened it back up and snaked down the pipe to clear the deeper blockage (see "Unclog" BB). Then I reassembled, tested again with a basin full of water (I was confident), and yea verily, glug glug.

Happy homesteading,
Mark