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  1. #1
    Jon Scott's Avatar
    Jon Scott Guest

    Default Plastic tube in concrete wall

    Buddy asked me what something was and I was unable to answer. Perhaps one of you could.


    In his basement on one of the walls there are several plastic tubes sticking out of his concrete wall. From about an inch off the ground to about an inch from the top plate. He doesn't have means of getting me a picture, he said the tubes are clear and about the size of a quarter and stick out about three inches.

    Again I haven't a clue what this is, so if anyone could shine some light on this.

    Thank You.

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  2. #2
    Join Date
    Feb 2008
    Location
    Caledon, Ontario
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    5,005

    Default Re: Plastic tube in concrete wall

    Jon,

    From your description it is likely the wall which was cracked was repaired using polyurethane/epoxy injection.

    The tubes are the injection ports. But I have only seen tubes the diameter of a pencil used, never the size of a quarter.

    Crack Injection - Basement Technologies


  3. #3
    Join Date
    Dec 2008
    Location
    Maryland
    Posts
    2,776

    Default Re: Plastic tube in concrete wall

    Possibility?
    Used to create uniform sized holes for use after wall was pored and forms removed rather than coming back and drilling holes.

    The sticking out 3 inches is a conundrum.

    Do the holes go through the foundation to the exterior?
    How far do they go into the wall?


  4. #4
    Jon Scott's Avatar
    Jon Scott Guest

    Default Re: Plastic tube in concrete wall

    Raymond - Thanks, that is what I was leaning towards but just like you said, the size is a bit big. I told him to keep an eye on it.

    Garry - He doesn't know if it goes through the wall, it's the foundation wall and there is dirt on the other side and he doesn't want to dig up unless need be. If the tubes were used during pouring the concrete, wouldn't the builder cut the tubes?

    I've never seen this, all materials I've studied and inspections I've been on. It's something I've never seen. He said his Home Inspector didn't know and would get back to him, still no answer from the inspector.

    Thanks for you help.


  5. #5
    Join Date
    Dec 2008
    Location
    Maryland
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    2,776

    Default Re: Plastic tube in concrete wall

    Jon,
    Insert a probe into tube to determine depth of tube.
    No mater what was done you would think they would pull tube out or cut it off flush.


  6. #6
    Join Date
    Dec 2007
    Location
    Holladay, UT
    Posts
    565

    Default Re: Plastic tube in concrete wall

    Could they be conduits for running wires etc. in future?

    Tom Rees / A Closer Look Home Inspection / Salt Lake City, Utah

  7. #7
    Join Date
    Sep 2009
    Location
    Arnold, MD
    Posts
    36

    Default Re: Plastic tube in concrete wall

    I agree with Raymond. I have done several crack repairs working with my mold remediation company and that is the exact description of a foundation wall crack repair. The ports we use are only about the size of maybe a dime though. I would NOT poke anything through to see how far it goes. If those ports were filled with polyurethane and capped off one by one going up the wall theres a chance water finds its way back in. Although, it is ok to cut them off flush with the wall but not necessary


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