Originally Posted by Bud Cline
Silicone silicone silicone. Is that all anyone knows anything about these days is silicone? It's being suggested for everything from sealing a shower to making boobs.
Then the poster says:
Wow! That wouldn't be an inconvenience for anyone!
How about Teflon tape maybe? That would make it a one minute-fix not a one-day fix.
Gee, Bud...what helpful comments.
It could be that we're talking about two different problems, or it could be that I'm just an incompetent silicone-wielding, know-nothing hack! I'm no tile guy...just a lowly master plumber.
You're talking about wrapping the threads on the nipple because you're assuming the problem is water coming from that joint (why, I don't know because the OP says this happens when someone is showering
); I'm talking about water cascading down the valve wall and getting behind the spout and/or valve trim while someone is showering, trickling through the likely oversized hole in the wall where the nipple comes through. Teflon tape on the end of the tub spout nipple won't address that. Whoever installed it likely also failed to secure the pipe to the framing which allows the spout to move, and keeps it from sitting tight against the tub wall.
If you can grab that spout and pull it in and out from the wall then it will never keep water from trickling behind. The simplest way to seal that hole is silicone - one of the only legitimate uses of the product. Sometimes you have to play the cards you're dealt.
I'm the biggest critic around of people using silicone gratuitously, but it does have it's applications. And allowing it to dry may be an inconvenience, but, gee...so is water coming through your ceiling. The difference is one is a temporary
But here's another thought - inspired by Bud: It's possible that the shower arm needs teflon tape or pipe dope on that joint behind the wall (which is unlikely because 99% of installers - even hacks - understand even this much - same with the tub spout). OR the threads on the shower arm may be starting to break - another problem (like the scenario I described above) that I've seen many times over the years; the shower arm can break off in the wall (especially if it was over-tightened, and after years of people pulling on shower head diverters etc) leaving a few threads inside the fitting the arm screws into.