Hot water line in crawl space split. 1/2" pipe, split in the middle of the pipe, about an inch long. Not at a join of any kind... just in the middle of the pipe and running with the pipe. Split is about an inch long.

Due to location of the failure and the insulation above it, we didn't discover the issue for roughly a week. When it was discovered, water was at a full spray from the split and all the floor joists were dripping.

I had a plumber fix the pipe and he said that this material "is garbage" and he could all but guarantee he'd be back within a year for the same failure somewhere else in the house. He said that this was "flow guard", though I saw no text indicating that. There was "CPVC" on the pipe, so I know that's the material.

I talked with another plumber that has been in the industry for over 22 years. He's a longtime friend of my mother in law, and we all trust him and his opinion. I don't feel that he'd be sending me bad news to raise his business as the first plumber *might* have been doing (not saying he was, just stating that it's possible since I clearly know next to nothing about this). His reaction when I told him I had CPVC was, "Oh, I'm sorry!" and he said the same as the first guy, that I'll have these issues again in the near future, without a doubt.

I've done some research and see that there have been no class action lawsuits, and that this material has been used for a few decades now, so it seems fairly well-known.

What are the general thoughts on this? Do I need to consider re-piping my home? Am I fine and just had a bad pipe? My house is five years old and one year OUT of warranty from the building. If this was a manufacturing defect when they made the pipe, would I need to be concerned since the entire neighborhood was built at the same time and therefore very likely that all the pipe likely came from the same plant and batch?

Obviously, I'm quite concerned! I'd appreciate your comments and thoughts.

EDIT: Thank you, Paul48. That does make sense. It is exposed, in that there are two vents that lead to the outside world. We live in the Seattle area, so it doesn't get very cold here in the winters, though we have had freezing a couple of times. The pipe that broke was fairly centrally located in the crawl space, right near the 'ceiling' and also covered by the insulation. And since it was hot water, I doubt that it actually froze. Very likely affected by the temperature change, I have no doubt.



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