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    tmeyer01's Avatar
    tmeyer01 Posts: 136, Reputation: 1
    Junior Member
    		  
    #1

    Apr 9, 2007, 10:07 AM
    Seal drain opening in concrete slab
    I have just installed a one piece tub/shower unit in my basement. I had to break out about 15 inches of concrete slab from the box that was originally there to accommodate a tub. The hole is completely under the tub which which will be framed into the walls on 3 sides. Should the opening in my slab that contains all the plumbing be filled or covered somehow or can it just be left open under the tub?

    Thanks,
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #2

    Apr 9, 2007, 11:54 AM
    I would at least fill it with coarse sand.
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