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Old 09-15-2009, 02:38 PM   #1
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Cap off in-floor basement rough-in

I am in the process of finishing my basement. The builder installed rough-ins in the basement (toilet and sink drain) which stick out about 12" from the concrete floor. They are currently capped off, but I won't be using them, so I need to cut them even with the concrete floor in order to install a subfloor over top. What's the best way to cap the rough-ins after I cut the pipes to ensure they will stay sealed (as they will no longer be accessible beneath the new floor)?



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Old 09-15-2009, 09:09 PM   #2
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I am not aware of a male glue in plug for this. I would say your going to have to cap it with a female and make allowances in the sub floor for the cap. If you laying 2x4s for a sub this wont be a problem. If your just laying sheet goods you will need some space to allow room for the cap. Maybe 2x2s in this area. I wouldn't kill the ruffins you may want them some day. Only other way is to chip some concrete away so you can cap the lines flush. Not a bad deal.


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Old 09-15-2009, 09:19 PM   #3
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I agree with Minconst about sealing off the rough in's completely you may some time down the road may want to use them.

All you need to do is cut off the pipes flush with the concrete and install and expansion plug. Easy to install and easy to remove later.
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