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  1. #1
    Join Date
    May 2007
    Location
    Tyler, TX
    Posts
    719

    Default Cast Iron Waste Lines

    The home I inspected today was built in 1991.

    I was surprised to find cast iron waste lines (exposed under sinks and the exterior clean-out). The vent stacks were PVC. The foundation was a slab.

    I was at loss as to why it was being used in 1991. Of course, Tyler Pipe is based here and a large provider.

    Was there (is there) a way to install cast iron waste lines that protected or prolong them?

    The buyer was a little freaked out about it b/c she'd had cast iron waste lines in another home.

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    Bruce Thompson, Lic. #9199
    www.TylerHomeInspector.com
    Home Inspections in the Tyler and East Texas area

  2. #2
    Join Date
    Mar 2007
    Location
    Spring City/Surrounding Philadelphia area
    Posts
    3,473

    Default Re: Cast Iron Waste Lines

    From what I see around here, cast iron lines last anywhere 70-100 years. Considering the house was built in 1991, their expectancy is down to 50-80 years. Personally, I don't think the buyer has anything to worry about.

    "It takes a big man to cry. It takes an even bigger man to laugh at that man". - Jack Handey

  3. #3
    Join Date
    Mar 2007
    Location
    Atlanta, Georgia
    Posts
    1,078

    Default Re: Cast Iron Waste Lines

    I have seen cast iron used in vertical runs in higher end homes. The idea is that it eliminates the noise of the water rushing around inside the walls. The under sink components were PVC.

    "The Code is not a peak to reach but a foundation to build from."

  4. #4
    Widdershins Saunders's Avatar
    Widdershins Saunders Guest

    Default Re: Cast Iron Waste Lines

    Quote Originally Posted by Bruce Ramsey View Post
    I have seen cast iron used in vertical runs in higher end homes. The idea is that it eliminates the noise of the water rushing around inside the walls. The under sink components were PVC.
    True, it is a very common practice in high end residential.

    All of the vertical drain lines are run in no hub cast iron and the vents and horizontal drain lines are run in solid core PVC pipe.

    If the budget allows for it, we will also wrap the pipe with a sound deadening material like Dexdamp.


  5. #5
    Join Date
    May 2007
    Location
    Tyler, TX
    Posts
    719

    Default Re: Cast Iron Waste Lines

    Quote Originally Posted by Widdershins Saunders View Post
    True, it is a very common practice in high end residential.

    All of the vertical drain lines are run in no hub cast iron and the vents and horizontal drain lines are run in solid core PVC pipe.

    If the budget allows for it, we will also wrap the pipe with a sound deadening material like Dexdamp.
    I would assume (since I didn't dig it up) that all of the lines were cast iron. The house was a single story and the clean-outs in the flower beds were iron too. There again, I'm assuming that the horizontal is cast iron too.

    Thanks for the info about the dexdamp.

    Bruce Thompson, Lic. #9199
    www.TylerHomeInspector.com
    Home Inspections in the Tyler and East Texas area

  6. #6
    Join Date
    May 2007
    Location
    Tyler, TX
    Posts
    719

    Default Re: Cast Iron Waste Lines

    Found out yesterday that cast iron was required for waste piping up until 2000 in the city limits of Tyler.

    Probably due to the fact that Tyler Pipe is a big manufacturer

    Bruce Thompson, Lic. #9199
    www.TylerHomeInspector.com
    Home Inspections in the Tyler and East Texas area

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