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    lewesbeach's Avatar
    lewesbeach Posts: 3, Reputation: 1
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    #1

    Feb 25, 2009, 02:10 PM
    Existing PVC toilet drain connection
    I have existing rough in plumbing in my basement. I would like to connect a new
    Toilet to an existing 3" PVC pipe that extends about 18" in the air. What type of connection do I use at the floor level? The PVC is covered with tar paper as it disappears in the concrete.
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Feb 25, 2009, 02:33 PM

    You need to cut that pipe an inch below the floor and weld/glue in a toilet fange. Adjustable Level-Fit Closet Flange :: Oatey.com
    lewesbeach's Avatar
    lewesbeach Posts: 3, Reputation: 1
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    #3

    Feb 25, 2009, 02:43 PM
    Quote Originally Posted by ballengerb1 View Post
    You need to cut that pipean inch below the floor and weld/glue in a toilet fange. Adjustable Level-Fit Closet Flange :: Oatey.com
    How do I cut the PVC 1" below the concrete? Isn't there something out there that I can just glue to the inside of the pipe at floor level? I am able to drill holes in the concrete to place anchor bolts in to hold this in place.
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    ballengerb1 Posts: 27,378, Reputation: 2280
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    #4

    Feb 25, 2009, 02:45 PM

    Are you building up the floor with a sub floor and tile? You can install a flange that fits inside the existing pipe but that flange may still be just a hair to tall. Chipping away the concrete to creat a flush mount is usually the route to follow. Tell me about your ideas for floor finish.
    lewesbeach's Avatar
    lewesbeach Posts: 3, Reputation: 1
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    #5

    Feb 25, 2009, 02:56 PM
    Quote Originally Posted by ballengerb1 View Post
    Are you building up the floor with a sub floor and tile? You can install a flange that fits inside the existing pipe but that flange may still be just a hair to tall. Chipping away the concrete to creat a flush mount is usually the route to follow. Tell me about your ideas for floor finish.
    The existing floor is concrete. I will be using ceramic tile to finish the floor. If the flange
    Is 1/4" - 1/2" thick I can build up the floor to match this height. I would prefer to do anything that works that does not require me to break up any concrete.
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    ballengerb1 Posts: 27,378, Reputation: 2280
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    #6

    Feb 26, 2009, 09:22 AM

    Here is the issue. Take a close look at the falnge I posted. If you had a 4" pipe the flange would fit inside the pipe like you were hoping. However, you have a 3" pipe so the flange fits over the pipe. You need to chip away enough of the concrete to make room for the neck of the flange. I am not talking about busting a hole in the floor but this chipping should only require a masonasry chisel and a small maul and about 5 minutes.
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