Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 04-21-2011, 11:33 PM   #1
Newbie
 
Join Date: Apr 2011
Posts: 2
Share |
Default

copper pipes hung with steel hangers 5 years ago


Hi, Thanks in advance for any advise. I had a plumber come today to change some pipes around for a shower, and he told me that the water pipes are corroded and in bad shape because the installer used metal wire hangers to support the pipe. The section where it enters the crawl space looked pretty green, with reddish hue to the pipes. He pulled one piece of the hanger away from the pipe and it looks like it has eaten into the pipe maybe 1/32 of an inch. He was telling me that the pipes will start to leak in a matter of time. Said that it would need to be re-piped at a cost of 2500-3000 dollars, not immediately, but if we developed a pinhole leak. Hubby was not here and was mad thinking the plumber was looking for a big job. Not sure what to do, call other plumbers, can it be fixed so it doesn't get worse? How to tell how bad it is just by looking at the pipe? We know nothing about copper pipe. The pipe was installed before we bought the house in june of 2006, so it's less than 5 years old, and we were led to believe the plumbing would be good for many years. What to do???

misslister is offline   Reply With Quote
Old 04-22-2011, 06:13 AM   #2
Plumb or Die!
 
Join Date: Oct 2010
Location: BC, Canada
Posts: 321
Default

copper pipes hung with steel hangers 5 years ago


If it ain't broke, don't fix it. Replace the steel hangers with copper ones and wait for the leak that may or may not occur in the next 5 to 10 years.

plumber666 is offline   Reply With Quote
Old 04-22-2011, 06:20 AM   #3
Member
 
Join Date: Dec 2008
Location: Wilmington, DE
Posts: 3,118
Default

copper pipes hung with steel hangers 5 years ago


It is called galvanic action, when two dissimilar metals are together. Get rid of different materials and the problem stops. Replace straps with plastic of copper.
Just Bill is offline   Reply With Quote
The Following User Says Thank You to Just Bill For This Useful Post:
mustangmike3789 (04-22-2011)
Old 04-22-2011, 08:08 AM   #4
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 6,864
Default

copper pipes hung with steel hangers 5 years ago


I think (although I will not swear to it) that the plumber is pulling your leg.

The steel hanger will corrode before the copper pipe does.

We cannot rule out wearing away (abrading) of the copper pipe sliding back and forth through the hanger due to expansion and contraction.

Copper corrosion is green. Steel corrosion is reddish.

A thin green coating on the pipe is not a worry. Caked up green residues is a worry.

Did you get to see and feel the pipe yourself?
__________________
Stop wasting time re-adjusting the pattern. Have several lawn sprinklers, one for each pattern.

Last edited by AllanJ; 04-22-2011 at 08:11 AM.
AllanJ is online now   Reply With Quote
The Following User Says Thank You to AllanJ For This Useful Post:
mustangmike3789 (04-22-2011)
Old 04-22-2011, 08:34 AM   #5
Just call me Andrew
 
Join Date: Mar 2009
Location: Albany, NY
Posts: 2,252
Default

copper pipes hung with steel hangers 5 years ago


Even if the plumber was right, why would it cost thousands to fix? Why not just cut out small sections of pipe and replace with couplings?
__________________
Andrew

secutanudu is offline   Reply With Quote
Old 04-22-2011, 08:44 AM   #6
the Musigician
 
DangerMouse's Avatar
 
Join Date: Jul 2008
Location: I'm right here!
Posts: 10,404
Default

copper pipes hung with steel hangers 5 years ago


A cheap fix could be as simple as ripping some old pvc down the middle, then cut sections to slip between the two metals, or even using #30 felt to separate the two, yes?

DM
__________________
[SIGPIC][/SIGPIC]Click here to see some of my original magic tricks and trick boxes!
DangerMouse is offline   Reply With Quote
Old 04-22-2011, 09:57 AM   #7
Newbie
 
Join Date: Apr 2011
Posts: 2
Default

copper pipes hung with steel hangers 5 years ago


The cheap fix sounds cheaper and easier than replacing the straps!
misslister is offline   Reply With Quote
Old 04-22-2011, 09:58 AM   #8
Just call me Andrew
 
Join Date: Mar 2009
Location: Albany, NY
Posts: 2,252
Default

copper pipes hung with steel hangers 5 years ago


Or just buy some foam or rubber pipe insulation.

__________________
Andrew

secutanudu is offline   Reply With Quote
Old 04-22-2011, 10:44 AM   #9
Member
 
Join Date: Jul 2010
Posts: 227
Default

copper pipes hung with steel hangers 5 years ago


I could be wrong about this but, I have always been taught that if a pipe is corroding then it will continue to corrode unless all of the corrosion is removed and the source of the corrosion is repaired.

So with that in mind there are a couple of things to consider here that can work.... I will go from least exspensive and tell you what the problems could be

1- Insulate the pipe or put some type of barrier between the strap and the pipe.- Will Slow the Corrosive effect but, the process has already started so I think it will still continue to corrode and will eventually leak.

2- Replace section of pipe that is corroded that you can see and replace all of the straps- This will stop those spots from corroding... but dont get your hopes up till you read my next comment that may expalin why the plumber said what he said

3- Replace the pipes and do the work the correct way- The Plumber pointed out the portion of the pipe that he could see. Chances are that is the entire house was re-piped by the same plumber then you could develop leaks elsewhere.

So I guess those are the 3 options... Always get a second opinion and be ready to ask questions. I think the first question I think of when talking about corroded pipes is " When doing the repair... If the banging of the pipes causes it to leak at another spot that was corroded... Does your price cover that?"
Docwhitley is offline   Reply With Quote
Old 04-22-2011, 12:47 PM   #10
Long-Time DIYer
 
Mike Swearingen's Avatar
 
Join Date: Mar 2005
Location: On Albemarle Sound In Northeastern NC
Posts: 1,460
Default

copper pipes hung with steel hangers 5 years ago


All situations are different, but I built my home in 1977 and the plumber installed copper pipes with "V" shaped steel hangers. The pipe rests in the bottom of the V and the top of the V has two bent over spikes that are driven into floor joists. I have never had a leak due to corrosion.
Who knows? LOL
Mike
Mike Swearingen is offline   Reply With Quote
Old 04-22-2011, 03:08 PM   #11
Wire Chewer
 
Red Squirrel's Avatar
 
Join Date: Jun 2009
Location: Ontario, Canada
Posts: 3,200
Default

copper pipes hung with steel hangers 5 years ago


I would just put something made out of plastic between the hanger and the pipe, or replace all the hanger with the plastic ones made for pex. Also if you get lot of water hammer, install a water hammer arrestor. The water hammer will destroy the pipes faster then this slow corrosion process,I would think.
Red Squirrel is offline   Reply With Quote
Old 04-22-2011, 04:25 PM   #12
Member
 
Join Date: Feb 2010
Location: Michigan
Posts: 400
Default

copper pipes hung with steel hangers 5 years ago


steel hangers on copper pipes are against code for the reason you stated. Buy copper or copper coated hangers, crawl under your house and replace every hanger you can find. I would not open any walls searching for a problem that has not happened yet.
plumberinlaw is offline   Reply With Quote
Old 04-22-2011, 04:29 PM   #13
NACE Coating Inspector
 
mustangmike3789's Avatar
 
Join Date: Apr 2011
Location: Florida
Posts: 524
Default

copper pipes hung with steel hangers 5 years ago


justbill & allen j are corect with galvanic action. when dissimular metals are connected the most active (mild steel) metal is more rapidly corroded,while the more noble (copper) metal tends to be protected and corrodes less. a perfect example of this is a zinc anode on a boat or in your case steel straps on a copper pipe. on a boat, when the anode completely corrodes, it needs to be replaced or the corrosin will move on to the next highest active metal (the motor or electrical wires). all of the suggestions above are correct. you need to replace the steel hangers with the plastic ones or replace the corroded pipes.

mustangmike3789 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
copper pipes tunaswootz Plumbing 8 07-26-2009 04:35 PM
Copper pipe size question greymous Plumbing 18 01-30-2009 04:02 PM
"Maintenance Free" Siding Materials (Vinyl, Steel, Fiber Cement) diggitydog Building & Construction 12 01-23-2009 04:24 PM
Debate - Pex vs Copper sandy2982 Plumbing 13 04-10-2008 10:47 PM
Stee Woll against Copper Pipes jvpeters132 Plumbing 12 02-10-2008 10:30 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.