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Thread: Best way to clean out cast iron drain?

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    Default Best way to clean out cast iron drain?

    My girlfriend has a slow drain in her shower and any time we try and plunge or snake it, we get a bunch of what looks sand out of it...is this really sand or is the pipe just falling apart?

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    More likely than not it's a combination of sludge and loose scale. Shower drains are usually fairly simple to clean. Sand is an indicator of a broken line,but the sand will not back up out if the drain itself. Many of my customers mistake the sludge and loose scale for sand. I would recomend a 3/8 drum machine, or a ridgid k 50, but a homeowner on a budget could get good results from the cordless ryobi unit. Good luck.

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    I would use a pistol rodder with a 5/16" or 1/4" cable. The "sand" is probably just sediment being held back from the slow drain.

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    Blow bag might work.
    Last edited by fixitright; 09-17-2017 at 11:55 PM.

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    Quote Originally Posted by fixitright View Post
    Blow bag might work.

    Noobs and blow bags not a good recipe, could be a shit storm

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    fixitright (09-18-2017)

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    It's a second floor shower, if that matters at all.

    From what I can tell, the drain comes out of the shower at 2", reduces to a 1 1/2 trap, then connects to the cast iron. From there, it runs under the floor and ties in with the toilet line. The total length of the shower drain is probably 5-9 feet.

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    You could try the ridgid 6' stool auger. They cost around $50 at home depot. I've used mine on my own shower drain out of sheer laziness. Worked pretty good. Make sure if you do use the bulb end, not the drophead. Shopvac can also work good. On shower drains as long as you cab get a good seal.

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