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Pex A is grade A garbage. I'm a copper guy.

Not a big fan of the Buna-N orings in the propress fittings, I wish they were Viton as stock. I will use propress in exposed areas. 90% of what I put in is sweat copper. I do install some pex, but again, only in a few instances and we use Viega crimp pex(B) with machined bronze fittings.

When we run any potable or heat lines(other than radiant) under a slab we bury no joints and it's all sleeved with armaflex and even the insulation joints are taped. Mind you we have very few slab runs here as almost all houses have basements. We also don't usually install manifolds, we'll run a main and branch off, makes more sense for large houses with HW re-circ loop(s).
 

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It makes me wonder how long those joints will last under concrete,,
someone will be in tears some day tearing up that floor and finding that mess
down in that hole
Looks like they'll get a rock or seven jamming into the pipe/fitting.

We don't do concrete with some rare exceptions so for us this wouldn't be any worse than working in any other trench where someone else digs it up.
 
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probably true, but for my own home it would be done for sure

whats money anyway..??
Sparky says I am working on my second million so what me worry??
Mark, I think you're MAD.

We always completely insulate lines under slab, pex or copper.
 

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you can’t take it with you..
my grandma always said you never see a Brinks truck following a hearse!
I did once, but it was probably just a fluke.
 
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I realize that. I basically live down the skreet from youz

I was questioning his logic. Requires insulation on pipe but doesn’t require hose Bibb protection.
Insulation stops condensate and energy loss, it does almost nothing to prevent freezing. In fact, insulating the line to a sillcock will make the pipe more likely to freeze as it can't get heat as quickly from inside the home. It loses heat at the sillcock. We have some sillcocks around here that are 100yrs old and have never frozen because the pipe going to them gets so much heat from in the home.
 
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Our plumbing code requires crawlspace and attic water piping be insulated. So that’s how the cookie crumbles.
Good. I like the look of copper as much as the next guy but I think almost all water/heat lines should be insulated.
 
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