Hi all - it's been a while since I've posted but wanted to close the loop on this thread. As mentioned a few weeks back, my plumber came by and removed the offset flange in my master water closet. Two weeks later, more water leaked out of the ceiling below. The biggest challenge was why was this leak intermittent?
I started to piece together some commonalities and the biggest one was the fact that every time I saw the leak occur over the course of the past several months, it always seemed to occur when we shut off the main water supply due to our house losing power, or the irrigation being installed, etc. I'm on a well so my water is supplied by a well pump. So I figured I'd try to recreate it. Well you know when you shut off the main water supply and then turn it back on, when you open the faucets, air sputters out for a few seconds? My theory is that one of the water supply lines must've had a change in pressure in this scenario and some how it was causing the leak to expose itself.
This past week - another leak! Well today the plumber came back over and we cut open the ceiling. We were having trouble reproducing the leak. At this point I was so frustrated. Where the heck is the water coming from!? When we were about to throw in the towel all of a sudden we saw dripping coming out of one of the hot water lines that feeds my master vanities. The odd part is where the water was dripping from the pipe (PEX), there were no connections. Upon feeling around the leak area, it was apparent that a nail from a nail gun used to hold up drywall strapping had pierced the pipe and it was only when we shut the main water off and caused a change in pressure in that line did the leaking occur.
So the good news is that we finally solved this mystery once and for all. The bad news is that I have a large hole in my ceiling and now have to find someone to fix it. Any ideas approximately what it may cost to get this patched up?
Thanks again for all of your support!