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-   -   Copper Pipe Turning Green (http://www.diychatroom.com/f7/copper-pipe-turning-green-27100/)

marcoj32 09-20-2008 03:11 PM

Copper Pipe Turning Green
 
I'm in the process of renovating my bathroom and had a plumber reconfigure my tub/shower plumbing to accommodate my new shower system. Today I noticed a green discoloration around the some of the copper pipes he sweated. I associate green and copper with water, however I don't see or feel any water leaking. Is this something to be worried about. I'm about to secure the area with durock and tile and would hate to tear it down because of a water leak.

concretemasonry 09-20-2008 04:36 PM

Copper will oxidize and you are seeing the "patina" that people pay lot for on flashing and downspouts. - They even try to accelerate it.

Termite 09-20-2008 04:36 PM

It is nothing to be concerned with. Not uncommon.

marcoj32 09-21-2008 11:10 AM

Hey guys,

Thank you very much. I appreciate your prompt and informative replies.

I LOVE THIS SITE!!!!!!:thumbup:

majakdragon 09-21-2008 12:53 PM

Most of this is a chemical reaction called patina, as others have stated. You will normally find this around fittings and pipe that have been soldered. Many Plumbers do not wipe the joints after sweating and the left-over flux causes this. I always wipe the joint, first with a gloved finger for the look of the joint, and later with a wet rag to remove the excess flux.

James Con 09-21-2008 06:36 PM

I would get the water tested for it's PH level, Water with a high acidic level will eat the copper pipe from ther inside out. Before you can realize it you will have pin hole leaks all over the house. That green is the copper being eaten away. I would bet you need an acid neutralizer and directly after that, a water softner. Take a water sample to Sears and have them test it, They will set a system up for you. Then shop around. I had the same problem and this set up fixed it. Oh and after cutting a piece of copper pipe out to see the condition of it internally i was amazed at how bad the pipe was pitted inside.

marcoj32 09-21-2008 08:30 PM

James,

It's not visible on the other pipes, only the ones that were sweated. I'm kinda agree with the other (came from the flux). It happened around 3 weeks after the pipes were sweated

Termite 09-21-2008 08:55 PM

Quote:

Originally Posted by marcoj32 (Post 160085)
James,

It's not visible on the other pipes, only the ones that were sweated. I'm kinda agree with the other (came from the flux). It happened around 3 weeks after the pipes were sweated

Bingo. I see it EVERY DAY in new construction. It happens, and is nothing to be overly concerned with.

jayp 09-22-2008 09:12 AM

self cleaning flux
 
That self cleaning flux will patina really quickly even if you do wipe it down after soldering.

majakdragon 09-22-2008 09:47 AM

Jayp, most of the 'patina" is caused from the heat of the torch. If you leave the melted flux on the pipe, it will, itself, turn the pipe green from the acid in it.

protechplumbing 09-22-2008 05:35 PM

In my experience large quantities of flux left on copper will weaken the pipe and encourage pin-holes to form years later. Remove it from the pipe using a dish soap and water mixture on a rag.

doo-man23@comcast.net 09-24-2008 09:00 PM

green at fitting is not bad your plumber didnt clean the flux off when cleaning the 90's

soldotnalady 05-27-2011 06:22 PM

thanks for all the information . My pipes are completely covered in green. i don't know how serious this is. Can anyone tell me just what to do before pin holes appear???

Bud Cline 05-27-2011 07:04 PM

Jheeeezh now you have two identical threads going at the same time.:yes: I feel a little foolish replying to your other thread before I found this one.:)

protechplumbing 05-29-2011 01:08 PM

Quote:

Originally Posted by soldotnalady (Post 656294)
thanks for all the information . My pipes are completely covered in green. i don't know how serious this is. Can anyone tell me just what to do before pin holes appear???

The dammage has been done. There is just as much flux on the inside of the pipes. If your water supply has the right water chemistry, the oil based flux will eat them from the inside out.


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