Plumbing Question: NEED Advice on Pex Size to use?

gbopp wrote:

malexander wrote:
I'm a licensed plumber (not that it really matters). But personally, I'd go with 1/2" if you've got the tools for it.

I'm not a plumber, but I do a lot of my own plumbing. I agree with you, go with 1/2". I think it will be easier.

Same here; not a plumber but I do a lot of it - I'd go 1/2".

66vdub wrote:
OK so I was looking at the waterline routing...
appears that 2 lines cross under the middle floor area from shower to bathroom area...
was not wanting to remove the floor but looks like I am going to have to bring up 2 or 3 ft. to make sure all is good under there.
Think I am going with 1/2"

Could you tie the new pipe onto the old one and pull it through using the old as a puller?

OK so I was looking at the waterline routing...
appears that 2 lines cross under the middle floor area from shower to bathroom area...
was not wanting to remove the floor but looks like I am going to have to bring up 2 or 3 ft. to make sure all is good under there.
Think I am going with 1/2"

malexander wrote:
I'm a licensed plumber (not that it really matters). But personally, I'd go with 1/2" if you've got the tools for it.

I'm not a plumber, but I do a lot of my own plumbing. I agree with you, go with 1/2". I think it will be easier.

I'm a licensed plumber (not that it really matters). But personally, I'd go with 1/2" if you've got the tools for it. I think 1/2" fittings would be more readily available. All the fixtures have the same size threads and fittings as residential fixtures.

I had to replumb my water heater area. I did it just like I would have done my house, except for putting in the by-pass valves.

I would stay with 3/8 if for no other reason than to make the routings and connecrtions easier. You may find a couple places that are tight where going up a little in size could make it slightly harder to get connections to sinks etc. You know the poly had fit through all the holes before so stay with 3/8.