ABS joint turned from yellow to white

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by Kiton, May 21, 2014.

  1. Kiton

    Kiton Member

    Messages:
    61
    Location:
    Quebec
    I had a kitchen counter installer in about a year ago to install new kitchen cupboards. They sent a "plumber" to do the sink install, he used ABS over PVC.

    One of the joints has turned from yellow to white.

    I assume this will need to be cut out and replaced?
    What causes the ABS cement to turn from yellow to white?

    Thanks,
  2. dj2

    dj2 Member

    Messages:
    418
    Location:
    California
    Around here, ABS is black.
  3. Kiton

    Kiton Member

    Messages:
    61
    Location:
    Quebec
    It is just the joint I am referring to.
    The thin yellow line of the glue or cement that can be seen around the joint under the sink has turned from yellow to white.
  4. Terry

    Terry Administrator Staff Member

    Messages:
    15,053
    Location:
    Bothell, Washington
    In Canada, they use a yellow glue for ABS.
    I would guess that you're fine. Every TV show I've seen from Canada uses that glue.
  5. johnjh2o1

    johnjh2o1 Plumbing Contractor for 49 years

    Messages:
    1,143
    Location:
    South*East
  6. Kiton

    Kiton Member

    Messages:
    61
    Location:
    Quebec
    The jointed started out yellow, over time it has turned white, but only those 2 joints, all the rest of the pipe work is still has bright yellow lines where the cement sealed the joints.

    I cut out the 45 and replaced it tonight.

    But I am curious why it would change color like that, it was not exposed to sunlight or high heat etc.
  7. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,689
    Location:
    Cave Creek, Arizona
    And if you joint changes color are you going to redo it again. There was probably NOTHING wrong with the joint regardless of its color.
  8. Kiton

    Kiton Member

    Messages:
    61
    Location:
    Quebec
    I have never seen one change color, I have asked around and no one else has seen one go white either.
    I tried to take a cell phone pix of the joint, but it is really crap with a close up detail picture. There looks to be a bunch of small cracks in those joints that can not be seen in any other joints. That was the motivation to cut it out.

    I have attached a picture of a good joint. They are a nice bright yellow. I did not realize the fusing cement was a different color in the USA.

    My neighbor is a master plumber, with the big trade union here. He does new installs only on high rises and large condo projects. I hate asking advice because every time the poor guy goes outside to cut the grass or shovel snow, someone is asking him for advice. I sucked it up and asked him about it, he had 2 things to say:

    1) Don't use ABS anymore, use PVC

    2) More than likely the joint was moved or manipulated before the cure process was finished.

    Tonight I glued a scrap joint together, just to see.
    I tried to pull it 2/3 apart and then re position it, after it was in place for only a little bit. Sure enough, the soup of the pipe fusing together was white. I will assume my neighbor is right and the pipe was twisted during the curing process.

    Attached Files:

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