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    tallwildoats's Avatar
    tallwildoats Posts: 2, Reputation: 1
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    #1

    Jun 28, 2009, 04:23 PM
    Can ABS be encased in concrete?
    I'm putting a new bath in a converted 2 car garage with an existing slab on grade. I will be pouring another slab over the old one (as the old one is not that pretty... ), but don't have much depth to work with in connecting to the 4" house drain. Can I encase the ABS drain pipes in concrete? Thanks for any help.
    Aaron
    ballengerb1's Avatar
    ballengerb1 Posts: 27,379, Reputation: 2280
    Home Repair & Remodeling Expert
     
    #2

    Jun 28, 2009, 04:39 PM

    Are you thinking of putting that ABS in the thickness of the new slab? Do not do that, trench out the old concrete, lay your drains in gravel and cover the drain with more gravel, then pour.
    tallwildoats's Avatar
    tallwildoats Posts: 2, Reputation: 1
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    #3

    Jun 28, 2009, 05:33 PM
    Quote Originally Posted by ballengerb1 View Post
    Are you thinking of putting that ABS in the thickness of the new slab?? Do not do that, trench out the old concrete, lay your drains in gravel and cover the drain with more gravel, then pour.
    Gotcha! Thank you. Do I need to sleeve the stub ups with something?
    iamgrowler's Avatar
    iamgrowler Posts: 1,421, Reputation: 110
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    #4

    Jun 28, 2009, 06:48 PM
    Quote Originally Posted by tallwildoats View Post
    gotcha! thank you. do i need to sleeve the stub ups with something?
    Foam sill seal is what I use to sleeve DWV risers.
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    ballengerb1's Avatar
    ballengerb1 Posts: 27,379, Reputation: 2280
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    #5

    Jun 29, 2009, 09:43 AM

    Growlers suggestion is very inexpensive and works great. In a pinch you can use some foam packing material if you don't have a rool of sill seal. You must have a slip surface between the drain pipe and concrete.

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