Big leak in my shower

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by shenfite, Feb 18, 2007.

  1. shenfite

    shenfite New Member

    Feb 18, 2007
    I am new to the forum. My shower in our bedroom has a huge leak at the drain. When I go downstairs to the garage ( bathroom is above garage), I see the leak occur when someone is running the water in shower.

    I removed the insullation, and found a 3-3.5 inch PVC nut that was loose. I hand tightened it. It seemed to stop the leak for one day and then it came back.

    My questions- Do I buy a tool to tighten the nut?

    is there a gasket that need to be replaced?

    the whole set up is PVC piping.

    can someone tell me what I need to do.

  2. jimbo

    jimbo Plumber

    Aug 31, 2004
    San Diego, CA
    Hard to tell without seeing, but in a typical drain of this type, the fitting is sealed into the shower by a sealant UNDER the flange, on top of the shower pan. This sealant is commonly plumbers putty, but could be silicone caulk. If your pipe glued into the fitting, it will be difficult, but might be possible, to loosen the nut then allow the fitting to raise up. Make sure everything is dry, and inject some silicone caulking under the flange. Tighten up the nut, and clean up the excess silicone which squeezes out using denatured alcohol.

    The other thing which might be leaking is if the pipe is inserted up into the fitting and sealed with a large donut-type gasket.

    If you have more questions and can post a picture, that would help.
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