House re-plumb, copper vs pex ?

sumdood
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Edited Date/Time 7/7/2022 3:41pm
On the fence. My old school self says 3/4” type L copper and call it done. Or use the new style Pex ?
I know it’s the latest greatest, but so was particle board and “Trex” decking at one point. And both of those turned out to be complete shit. I had a pinhole show up over the 3 day weekend. Luckily my house is on piers so we heard it, and it was accessible to McGyver it Laughing
Might not be so lucky next time. So if it was your house, what would you do, copper or plastic ?
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Josh422
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5/31/2022 6:34pm
Expansion PEX. Single story? History of leaks/pinholes? Does the copper crinkle when cut with tubing cutters?
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rucka356
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5/31/2022 6:35pm
I love pex
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sumdood
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Josh422 wrote:
Expansion PEX. Single story? History of leaks/pinholes? Does the copper crinkle when cut with tubing cutters?
Single story built in 56', was replumbed ?? sometime.... We've been here 22 years so longer than that. I "think" there's still galvanized risers in one shower, the pressures been slowly dropping over the years
SEEMEFIRST
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5/31/2022 7:42pm
It freezes here, so no brainer.
Y'all have shifting Earth, so I say, no brainer.
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The Shop

jeffro503
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5/31/2022 8:08pm
Wirsbo / Pex all the way. If you are any where it can freeze bad for long periods , and the possibility of losing power , Wirsbo could save you thousands and thousands of dollars in the long run on repairs. The stuff is amazing , and does exactly what it should do. I've done hundreds of water damage repair jobs from leaky pipes......I can't remember one of those being plumbed with Wirsbo. All were either copper or galvanized.
2
Chance1216
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5/31/2022 8:14pm
Josh422 wrote:
Expansion PEX. Single story? History of leaks/pinholes? Does the copper crinkle when cut with tubing cutters?
sumdood wrote:
Single story built in 56', was replumbed ?? sometime.... We've been here 22 years so longer than that. I "think" there's still galvanized risers in one...
Single story built in 56', was replumbed ?? sometime.... We've been here 22 years so longer than that. I "think" there's still galvanized risers in one shower, the pressures been slowly dropping over the years
The problem with your pressure dropping lies within the galvanized. It corrodes over time. The scale builds up and, will often flake off, clogging your angle stops, shower heads and, sink aerators. Also, reducing the ID of the line. Go with pex. I can’t recommend it enough. Copper, you’ll spend a lot more money and, time installing it.
It’s very expensive. You’ll have to ream the copper as well. The lip created by using tubing cutters, creates turbulence. Turbulence in the line will cause the copper to wear out faster. Pex, you just cut, expand the pipe and ring, then bottom the fittings out.
Pick up a Milwaukee pex gun. If you need help sizing the system, draw out your floor plan and, I’ll draw an isometric for you.

Yes, I’m a plumber. Six years of residential and, 18 commercial. Here’s my current project so you don’t think I’m BS’n you.


12
Chance1216
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5/31/2022 8:21pm
Do the math. 100’ roll of 1/2” pex or, 20’ 1/2” copper.
Look for Uponor brand pex. Not the stuff from Home Depot. There’s a difference in quality.

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jeffro503
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5/31/2022 8:39pm
Was hoping you would chime in here D.
Btw....that current job looks very cool.
I just finished a job for a couple that work in Hollywood.
The guy did that " melting head dude " in Indiana Jones , and did all the costume , masks , ect in the movie " the fly " remake about 30 years ago. Very cool people.
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Josh422
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5/31/2022 9:02pm
If you don’t have a history of pinhole leaks and the copper cuts good, you could do all the horizontal runs in a day and knock out a healthy chunk of potential problems.
Chance1216
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5/31/2022 9:18pm
jeffro503 wrote:
Was hoping you would chime in here D. Btw....that current job looks very cool. I just finished a job for a couple that work in Hollywood...
Was hoping you would chime in here D.
Btw....that current job looks very cool.
I just finished a job for a couple that work in Hollywood.
The guy did that " melting head dude " in Indiana Jones , and did all the costume , masks , ect in the movie " the fly " remake about 30 years ago. Very cool people.
That sounds pretty cool.

It doesn’t look like much atm. The equipment was just set today and, the trench drain was installed last week.
I’ll be anchoring the feet in tomorrow. Material to arrive for piping later afternoon. Hoping this project turns out well. Learning a lot on this one.
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5/31/2022 9:27pm
Can you just get it epoxy lined and call it a day?
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jeffro503
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5/31/2022 9:30pm
jeffro503 wrote:
Was hoping you would chime in here D. Btw....that current job looks very cool. I just finished a job for a couple that work in Hollywood...
Was hoping you would chime in here D.
Btw....that current job looks very cool.
I just finished a job for a couple that work in Hollywood.
The guy did that " melting head dude " in Indiana Jones , and did all the costume , masks , ect in the movie " the fly " remake about 30 years ago. Very cool people.
Chance1216 wrote:
That sounds pretty cool. It doesn’t look like much atm. The equipment was just set today and, the trench drain was installed last week. I’ll be...
That sounds pretty cool.

It doesn’t look like much atm. The equipment was just set today and, the trench drain was installed last week.
I’ll be anchoring the feet in tomorrow. Material to arrive for piping later afternoon. Hoping this project turns out well. Learning a lot on this one.
There is some high dollar tanks in that room. Is this a brewery or some sort of a small dairy?! Seen quite a few of both , but from what I see , this is some where in the middle. Maybe totally off on this. Is it for syrup or cream for butter or something like that?
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Chance1216
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5/31/2022 9:52pm
jeffro503 wrote:
Was hoping you would chime in here D. Btw....that current job looks very cool. I just finished a job for a couple that work in Hollywood...
Was hoping you would chime in here D.
Btw....that current job looks very cool.
I just finished a job for a couple that work in Hollywood.
The guy did that " melting head dude " in Indiana Jones , and did all the costume , masks , ect in the movie " the fly " remake about 30 years ago. Very cool people.
Chance1216 wrote:
That sounds pretty cool. It doesn’t look like much atm. The equipment was just set today and, the trench drain was installed last week. I’ll be...
That sounds pretty cool.

It doesn’t look like much atm. The equipment was just set today and, the trench drain was installed last week.
I’ll be anchoring the feet in tomorrow. Material to arrive for piping later afternoon. Hoping this project turns out well. Learning a lot on this one.
jeffro503 wrote:
There is some high dollar tanks in that room. Is this a brewery or some sort of a small dairy?! Seen quite a few of both...
There is some high dollar tanks in that room. Is this a brewery or some sort of a small dairy?! Seen quite a few of both , but from what I see , this is some where in the middle. Maybe totally off on this. Is it for syrup or cream for butter or something like that?
It’s a brewery. I’ll text you some pictures when I’m done.
sumdood
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5/31/2022 9:57pm
Chance1216 wrote:
The problem with your pressure dropping lies within the galvanized. It corrodes over time. The scale builds up and, will often flake off, clogging your angle...
The problem with your pressure dropping lies within the galvanized. It corrodes over time. The scale builds up and, will often flake off, clogging your angle stops, shower heads and, sink aerators. Also, reducing the ID of the line. Go with pex. I can’t recommend it enough. Copper, you’ll spend a lot more money and, time installing it.
It’s very expensive. You’ll have to ream the copper as well. The lip created by using tubing cutters, creates turbulence. Turbulence in the line will cause the copper to wear out faster. Pex, you just cut, expand the pipe and ring, then bottom the fittings out.
Pick up a Milwaukee pex gun. If you need help sizing the system, draw out your floor plan and, I’ll draw an isometric for you.

Yes, I’m a plumber. Six years of residential and, 18 commercial. Here’s my current project so you don’t think I’m BS’n you.


Wow that's big time ! Very cool ! I've never used Pex, but I've done a lot of copper plumbing. I'm with you on reaming the cut ends of the copper, I've always done that just to keep the plumbing quiet, never thought about turbulence causing the pipes to wear quicker but it makes sense. I don't mind reaming the cut ends of the pipes and paying for copper if it's better in the long run. My house is only 1,300 sq.ft. with a crawlspace. I have 1 full bath (shower tub combo, sink and toilet) 1 "1/2" ? bath (sink and shower) and a kitchen sink. I want to run stub outs for an outside shower and add 2 hose bibs. The laundry is in a separate garage with the current lines run under my driveway, but I can get new lines there without saw cutting by hanging it on the side of a deck. How does Pex work exposed to sunlight ?, and how do I get strength for the hose bibs ? Just curious.

In your opinion which is the better finished product in terms of longevity ? I know Pex is way cheaper and easier, but in the long run is it better ? We're not planning on selling, the house will eventually go to our kids. I don't want to do this every few, five, or 10 years even. I don't care about it being more expensive or harder to do, I just want what's going to be headache / trouble free for the longest time. If it was your permanent "Not moving" house you're planning on staying in for years, would you go copper or Pex ? I'm all about cheap and easy, as long as it lasts as long. If not I don't mind the extra effort.
I've done lots of pool and spa plumbing, I used to install solar, I can solder. I keep hearing "Pex is awesome, it's so easy. But is it better ?

That looks like a badass project Chance ! My shit's kind of tinker toy like compared to that Laughing
This place had ancient in ground valves to switch from pool to spa. I put in new Jandy valves raised up where there easier to reach. Before they had to reach down into a spider infested hole in the deck. I ran some conduit so they can automate the valves later if they wanted.






I can do the work, I'm just leery of Pex, it seems like something I'd plumb my RV in, not my house Laughing




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Chance1216
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5/31/2022 10:07pm Edited Date/Time 6/1/2022 5:29am
Sumdood. Go with pex. It’ll last a very long time. You don’t want to be in a crawl space from what it looks like soldering. If you have a leak, it’ll be a pain having to sweat it again. I’ve been there.

I was able to repipe my aunts house in Carson in ten hours. I went in, did the demo and taped red and blue on the drops coming through the floor into the crawl . It helped keep me from crossing the hot and, cold. Granted it was just the crawl space but, that’s including the drain. Copper would’ve taken at least three times as long.
She had the exact issue as you. Pin holes.

Temporarily till I was able to get down there, I had my cousin buy a shark bite coupling matched to the size of pipe being cut and, a pair of cutters. I had him cut the pipe exactly centered with the pin hole. Then rejoin the two pieces using the coupling. The key with those is making sure they bottom out when pushing the pipe in. It served its purpose and lasted a month until I got down there.
Chance1216
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5/31/2022 10:15pm
Chance1216 wrote:
The problem with your pressure dropping lies within the galvanized. It corrodes over time. The scale builds up and, will often flake off, clogging your angle...
The problem with your pressure dropping lies within the galvanized. It corrodes over time. The scale builds up and, will often flake off, clogging your angle stops, shower heads and, sink aerators. Also, reducing the ID of the line. Go with pex. I can’t recommend it enough. Copper, you’ll spend a lot more money and, time installing it.
It’s very expensive. You’ll have to ream the copper as well. The lip created by using tubing cutters, creates turbulence. Turbulence in the line will cause the copper to wear out faster. Pex, you just cut, expand the pipe and ring, then bottom the fittings out.
Pick up a Milwaukee pex gun. If you need help sizing the system, draw out your floor plan and, I’ll draw an isometric for you.

Yes, I’m a plumber. Six years of residential and, 18 commercial. Here’s my current project so you don’t think I’m BS’n you.


sumdood wrote:
Wow that's big time ! Very cool ! I've never used Pex, but I've done a lot of copper plumbing. I'm with you on reaming the...
Wow that's big time ! Very cool ! I've never used Pex, but I've done a lot of copper plumbing. I'm with you on reaming the cut ends of the copper, I've always done that just to keep the plumbing quiet, never thought about turbulence causing the pipes to wear quicker but it makes sense. I don't mind reaming the cut ends of the pipes and paying for copper if it's better in the long run. My house is only 1,300 sq.ft. with a crawlspace. I have 1 full bath (shower tub combo, sink and toilet) 1 "1/2" ? bath (sink and shower) and a kitchen sink. I want to run stub outs for an outside shower and add 2 hose bibs. The laundry is in a separate garage with the current lines run under my driveway, but I can get new lines there without saw cutting by hanging it on the side of a deck. How does Pex work exposed to sunlight ?, and how do I get strength for the hose bibs ? Just curious.

In your opinion which is the better finished product in terms of longevity ? I know Pex is way cheaper and easier, but in the long run is it better ? We're not planning on selling, the house will eventually go to our kids. I don't want to do this every few, five, or 10 years even. I don't care about it being more expensive or harder to do, I just want what's going to be headache / trouble free for the longest time. If it was your permanent "Not moving" house you're planning on staying in for years, would you go copper or Pex ? I'm all about cheap and easy, as long as it lasts as long. If not I don't mind the extra effort.
I've done lots of pool and spa plumbing, I used to install solar, I can solder. I keep hearing "Pex is awesome, it's so easy. But is it better ?

That looks like a badass project Chance ! My shit's kind of tinker toy like compared to that Laughing
This place had ancient in ground valves to switch from pool to spa. I put in new Jandy valves raised up where there easier to reach. Before they had to reach down into a spider infested hole in the deck. I ran some conduit so they can automate the valves later if they wanted.






I can do the work, I'm just leery of Pex, it seems like something I'd plumb my RV in, not my house Laughing




You don’t want pex exposed to sunlight. You can get away with using foam insulation to protect it. Regarding the strength for hose bib’s we screw them directly to a trim block drilled with a 1 3/8” bit. There’s several different ways to do it though.

I only run copper in larger commercial applications. The bathrooms I plumbed for the brewery I’m on, was piped with pex. Watch a couple YouTube videos to understand the process. There’s a ring that slides over the end of the pipe that gets expanded at the same time as the pex pipe. It’s simple. Also get a pair of scissor cutters made by Rigid. They’re perfect for cutting clean. Here’s the cutters you want. Plus they’re awesome for cutting radiator hose as well.
2
sumdood
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5/31/2022 10:23pm
So if you were doing your house you'd use Pex ? I'll have to check it out. Thanks !
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Josh422
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5/31/2022 10:28pm
Everything Chance says is correct. Use expansion pex and don’t look back. The crimp stuff at Home Depot is not the same. It’s been around a lot longer than you think, coming from radiant heat in Europe. You’ll do it quicker, cheaper and have less chance of an error. It’ll last much longer. Never had a problem with it on frost free hose bibs. Your bib shouldn’t be supported by the piping anyway. Around here on residential you’ll typically see an 8” frost free. Shoot sometimes we loop the pex for a quick change out when the bib goes bad. Horizontal runs need more clamps than copper IMO. There’s no good reason to repipe with anything else.
ns503
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6/1/2022 3:50am
Pex.

I'm no pro like the pros on here. Just a home owner DIY'er that sometimes knows just enough to get himself in trouble. Mainly with electricity. Woohoo So I just use the rings + crimper tool - no expander. No issues so far with what I've done over the years. Last time was last month at fathers place. 60 year old copper pinholed a couple times the past few years, did a quick Sharkbite fix 'for now'. The last one quickly led into replacing the main sections. Took no time compared to what copper replacement would have taken, and way less $. That copper was in some bad shape, couldn't cut it with a pipe cutter. Wafer thin. Crinkled before the cut got made. I'm also not completely trusting on Sharkbites - but they're great for a quick copper/Pex transition. Pretty sure I wouldn't bury one in a wall or ceiling though. I've also had pinholes in my copper. It's 25 years old. Last year, it was a bad cushion tank leading to a session of replacing a bunch of copper. Sometimes things snowball. I think our water is slightly acidic, certainly doesn't help.

I still have a re-plumbing project waiting for me at the cottage. Mainly crawl space. And mainly cheap old leaky gate valves. But there will be a Pex swap going on there too, hopefully sometime over the summer.

Any of you pros got any pro tips for getting copper out of interior walls and replacing with Pex? Got a couple bathroom overhauls on the horizon, would sure like to replace some copper with Pex while I'm at it. Without tearing walls apart. Not sure the copper will pull down from the basement, pretty sure it would be fastened in there to some extent. Or have elbows in the way.
Chance1216
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6/1/2022 5:01am
sumdood wrote:
So if you were doing your house you'd use Pex ? I'll have to check it out. Thanks !
Yes, I would use pex in my house.
1
Chance1216
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6/1/2022 5:31am
ns503 wrote:
Pex. I'm no pro like the pros on here. Just a home owner DIY'er that sometimes knows just enough to get himself in trouble. Mainly with...
Pex.

I'm no pro like the pros on here. Just a home owner DIY'er that sometimes knows just enough to get himself in trouble. Mainly with electricity. Woohoo So I just use the rings + crimper tool - no expander. No issues so far with what I've done over the years. Last time was last month at fathers place. 60 year old copper pinholed a couple times the past few years, did a quick Sharkbite fix 'for now'. The last one quickly led into replacing the main sections. Took no time compared to what copper replacement would have taken, and way less $. That copper was in some bad shape, couldn't cut it with a pipe cutter. Wafer thin. Crinkled before the cut got made. I'm also not completely trusting on Sharkbites - but they're great for a quick copper/Pex transition. Pretty sure I wouldn't bury one in a wall or ceiling though. I've also had pinholes in my copper. It's 25 years old. Last year, it was a bad cushion tank leading to a session of replacing a bunch of copper. Sometimes things snowball. I think our water is slightly acidic, certainly doesn't help.

I still have a re-plumbing project waiting for me at the cottage. Mainly crawl space. And mainly cheap old leaky gate valves. But there will be a Pex swap going on there too, hopefully sometime over the summer.

Any of you pros got any pro tips for getting copper out of interior walls and replacing with Pex? Got a couple bathroom overhauls on the horizon, would sure like to replace some copper with Pex while I'm at it. Without tearing walls apart. Not sure the copper will pull down from the basement, pretty sure it would be fastened in there to some extent. Or have elbows in the way.
Drill down through the sink cabinets and into the crawl.
Drill through the floor for the water closet and use straight stops.
Motox627!
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6/1/2022 6:30am
sumdood wrote:
So if you were doing your house you'd use Pex ? I'll have to check it out. Thanks !
Chance1216 wrote:
Yes, I would use pex in my house.
Same here.

We use it in around 4500 houses a year and the only issues we ever have with it is other trades drilling or nailing into it. Sumdood, you will have to pick up the tools to either crimp or expand it, but then you can use same tools to replace whatever sections go bad in the future..... Once you have the tools, the fittings and pipe are cheap.
FLmxer
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That property I bought has a mobile home on it built in 2018 and we are in the process of turning it into a guest house/spa while our house is being built. Got a steam shower and jacuzzi and its the first time I have worked with pex and man it's very easy to work with. Thanks again to Chance for all his help. Not only is he a great guy but a master plumber and also makes some of the best fishing jigs I have seen.

Sumdood I recently have a leak in my pool under my foundation and not looking forward to my options.
1
Josh422
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6/1/2022 6:51am
ns503 wrote:
Pex. I'm no pro like the pros on here. Just a home owner DIY'er that sometimes knows just enough to get himself in trouble. Mainly with...
Pex.

I'm no pro like the pros on here. Just a home owner DIY'er that sometimes knows just enough to get himself in trouble. Mainly with electricity. Woohoo So I just use the rings + crimper tool - no expander. No issues so far with what I've done over the years. Last time was last month at fathers place. 60 year old copper pinholed a couple times the past few years, did a quick Sharkbite fix 'for now'. The last one quickly led into replacing the main sections. Took no time compared to what copper replacement would have taken, and way less $. That copper was in some bad shape, couldn't cut it with a pipe cutter. Wafer thin. Crinkled before the cut got made. I'm also not completely trusting on Sharkbites - but they're great for a quick copper/Pex transition. Pretty sure I wouldn't bury one in a wall or ceiling though. I've also had pinholes in my copper. It's 25 years old. Last year, it was a bad cushion tank leading to a session of replacing a bunch of copper. Sometimes things snowball. I think our water is slightly acidic, certainly doesn't help.

I still have a re-plumbing project waiting for me at the cottage. Mainly crawl space. And mainly cheap old leaky gate valves. But there will be a Pex swap going on there too, hopefully sometime over the summer.

Any of you pros got any pro tips for getting copper out of interior walls and replacing with Pex? Got a couple bathroom overhauls on the horizon, would sure like to replace some copper with Pex while I'm at it. Without tearing walls apart. Not sure the copper will pull down from the basement, pretty sure it would be fastened in there to some extent. Or have elbows in the way.
Chance1216 wrote:
Drill down through the sink cabinets and into the crawl.
Drill through the floor for the water closet and use straight stops.
I agree, stub up through floor vertically and abandon copper in wall. Unless you are handy with drywall repair and like that sort of thing.
1
TXDirt
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6/1/2022 7:49am
Pex all the way unless there is a very specific reason you need copper. For a residential system I can’t think of a reason you would want to use copper over pex.
ns503
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6/1/2022 9:12am
ns503 wrote:
Pex. I'm no pro like the pros on here. Just a home owner DIY'er that sometimes knows just enough to get himself in trouble. Mainly with...
Pex.

I'm no pro like the pros on here. Just a home owner DIY'er that sometimes knows just enough to get himself in trouble. Mainly with electricity. Woohoo So I just use the rings + crimper tool - no expander. No issues so far with what I've done over the years. Last time was last month at fathers place. 60 year old copper pinholed a couple times the past few years, did a quick Sharkbite fix 'for now'. The last one quickly led into replacing the main sections. Took no time compared to what copper replacement would have taken, and way less $. That copper was in some bad shape, couldn't cut it with a pipe cutter. Wafer thin. Crinkled before the cut got made. I'm also not completely trusting on Sharkbites - but they're great for a quick copper/Pex transition. Pretty sure I wouldn't bury one in a wall or ceiling though. I've also had pinholes in my copper. It's 25 years old. Last year, it was a bad cushion tank leading to a session of replacing a bunch of copper. Sometimes things snowball. I think our water is slightly acidic, certainly doesn't help.

I still have a re-plumbing project waiting for me at the cottage. Mainly crawl space. And mainly cheap old leaky gate valves. But there will be a Pex swap going on there too, hopefully sometime over the summer.

Any of you pros got any pro tips for getting copper out of interior walls and replacing with Pex? Got a couple bathroom overhauls on the horizon, would sure like to replace some copper with Pex while I'm at it. Without tearing walls apart. Not sure the copper will pull down from the basement, pretty sure it would be fastened in there to some extent. Or have elbows in the way.
Chance1216 wrote:
Drill down through the sink cabinets and into the crawl.
Drill through the floor for the water closet and use straight stops.
Josh422 wrote:
I agree, stub up through floor vertically and abandon copper in wall. Unless you are handy with drywall repair and like that sort of thing.
This is a second floor bath (they both are) with a living room underneath (second one has another bathroom underneath). I might have no choice but to do some drywall destruction/repair - which I really hate the thoughts of - if I really want to replace the copper. Which I kinda sorta do, if redoing the bathroom.
Chance1216
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6/1/2022 9:24am
Chance1216 wrote:
Drill down through the sink cabinets and into the crawl.
Drill through the floor for the water closet and use straight stops.
Josh422 wrote:
I agree, stub up through floor vertically and abandon copper in wall. Unless you are handy with drywall repair and like that sort of thing.
ns503 wrote:
This is a second floor bath (they both are) with a living room underneath (second one has another bathroom underneath). I might have no choice but...
This is a second floor bath (they both are) with a living room underneath (second one has another bathroom underneath). I might have no choice but to do some drywall destruction/repair - which I really hate the thoughts of - if I really want to replace the copper. Which I kinda sorta do, if redoing the bathroom.
Run it exposed down the wall so, all of your family can appreciate your craftsmanship.

Joking aside. Either build a small chase or, the only other option is opening the wall and, ceiling. Just make sure to support the pex every 32”. Both vertically and, horizontally. That’s actually code here in Washington. The last thing you’ll want is a line flapping in the wall after getting it rocked over.

Sioux Chief is the brand for these supports. They come in the common sizes. 1/2, 3/4 and, 1”


Josh422
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6/1/2022 9:25am
ns503 wrote:
This is a second floor bath (they both are) with a living room underneath (second one has another bathroom underneath). I might have no choice but...
This is a second floor bath (they both are) with a living room underneath (second one has another bathroom underneath). I might have no choice but to do some drywall destruction/repair - which I really hate the thoughts of - if I really want to replace the copper. Which I kinda sorta do, if redoing the bathroom.
Yeah, cutting drywall is going to be the only way. Just be thoughtful about it and should be able to minimize the amount cut.
Chance1216
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6/1/2022 9:29am
Sumdood. I looked at your profile to send you a pm, wanting to provide you with my phone number. You didn’t have that option.

I’m not really wanting to post my number here as I recall Boomslang getting a bunch of calls at 2am when he did so.
Chance1216
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6/1/2022 10:16am
ToolMaker wrote:
Can you just get it epoxy lined and call it a day?
That method is used on drainage lines.

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