This piping had the color of PB but was not labeled as such. Does this appear to be pb or another plastic? home 100 years old mostly was copper/galvanized supply
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those appear to be 3/8" pb supply lines, not the same issues as 1/2 pb pipe and fittings…
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I agree, they look like standard supply lines you would see on a toilet or faucet.
Looks like there is an S-Trap though
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Always a good learning tool.
https://inspectapedia.com/plumbing/PB_Piping.php
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Can you explain more? I have never heard of any PB not having issues.
Those are factory supply lines.
That whole thing is FUBAR.
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Chris those supply lines are still readily available and widely used. While I was never a fan of them myself cheap is cheap and cheap sells…
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Not James, but not all PB has had issues. I’ve inspected many homes with original PB for 35 years plus with no problems ever. Although I do make note of it, I don’t call it as a “defect” unless I see one. I do note it and inform of previous issues or repairs that i could see. Never do I call for replacement just because it’s PB, but any concerns should be further evaluated.
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So just generic plastic I assume?
still made out of pb Chris
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Because it’s grey? 
Thanks I’ve read some of the same online today. I hate being instructed to always do this and find out things are not always “wrong” later on.
May not be Polybutylene, could be Polyethylene
BrassCraft 3/8 in. O.D. x 20 in. PEX Toilet Riser with Plastic Compression Sleeve P1-20DL F (homedepot.com)
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Don’t confuse polyethylene with PEX (cross linked polyethylene).The link you provided is PEX piping.
That’s what I was thinking. I found some pipes that looked similar and said PE. Most PB has pb written on it that I’ve seen. Although I know that things are not always labeled.
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pex is a type of pe
What is the main difference? It stands for Cross-linked Polyethylene, (whatever that means) 
Cross-linked polyethylene - Wikipedia
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Polyethylene pipe and cross-linked polyethylene are two very different animals.
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I’m not a chemist so I don’t know the details lol.
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Very different piping materials. Go to the big box store and look at the irrigation piping it’s black and comes in a roll that’s most likely polyethylene.
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