briandm
New Member
I'm the unfortunate owner of a house plumbed with cpvc. Every time someone turns on the hot water after it's been off a while (so water and pipes of the hot water line start off cold), I hear creaking in the walls. I know what it is - thermal expansion of the pipes that's extending the pipe down and through the floor plate inside the wall and it's rubbing in the hole ( I cut out a piece of my garage wall and can see it moving about 1/8". It's not just pressing on one side, but rather is in a hole that it seems has no margin or gap on any side.
I have 2 concerns:
1) just the annoying noise
2) I'm aware of the fragility of cpvc and am concerned that this catching rubbing ain't doing it any favors.
I could cut the pipe out, widen the holes, and then replace - but that would be a non-trivial amount of work as it's in a few locations, one of which is a finished wall that would be more difficult to patch. So I was wondering if maybe I could use some sort of lubricant (silicone?) to help it slip through better without catching. It would be a super simple first option to test out. On the finished wall, I might even be able to get by with just a couple small holes in the finished wall just big enough to get lubricant tube through.
I'm curious to see if anyone knows if the cpvc and silicone would adversely react with each other (don't want to cause my pipes to fail faster), or if anyone has ever tried this and seen it help.
Thanks!
-Brian
I have 2 concerns:
1) just the annoying noise
2) I'm aware of the fragility of cpvc and am concerned that this catching rubbing ain't doing it any favors.
I could cut the pipe out, widen the holes, and then replace - but that would be a non-trivial amount of work as it's in a few locations, one of which is a finished wall that would be more difficult to patch. So I was wondering if maybe I could use some sort of lubricant (silicone?) to help it slip through better without catching. It would be a super simple first option to test out. On the finished wall, I might even be able to get by with just a couple small holes in the finished wall just big enough to get lubricant tube through.
I'm curious to see if anyone knows if the cpvc and silicone would adversely react with each other (don't want to cause my pipes to fail faster), or if anyone has ever tried this and seen it help.
Thanks!
-Brian