Laundry room redo - ends up we gotta break concrete to catch drain, ugh.

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Elite

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So....initially i was hoping to catch the stack but its on a different wall. So, now, we have decided to not box anything in and trench and bury the drain and supply lines using PEX So, I am wondering if there is anything I should be looking out for when my contractor does this? P traps, vents, etc. Going to have washer box inside back wall. Supply lines come up from along the inside because the back wall is an outside wall. Close up drain in center of room and move it back where the doors will be in front of the washer and dryer as well as cut and cap old washer tub drain (left). Anything out of the ordinary I should keep an eye out for? My guy seems capable but I always like to be in the know.


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Elite

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Because of the distance, the recommendation is to add a ptrap and roof vent, is that smart/necessary? The sink is probably 8-10ft away so air vent perhaps not good enough?
 

Terry

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The distance from P-trap to vent is max at 60"
The kitchen sink and the washer need traps and venting for them. It doesn't make sense to tie the vents together when they are that far apart.
 

Elite

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We added a Ptrap, and a vent on the washer side. On the sink side, it'll drain right to 2" now and go right into 3", do I need a vent under the sink? Only concern (too late now) is the height of the washer drain box. Its about 34" off the ground, which is about the height of the laundry tub it used to drain into. Seems like the min is 30" though, is that correct?

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Reach4

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I see you have a fan there. Concrete does not cure by drying. When you pour concrete, it would be best to keep it moist, perhaps by covering with plastic.
 

Elite

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I see you have a fan there. Concrete does not cure by drying. When you pour concrete, it would be best to keep it moist, perhaps by covering with plastic.

I wasnt home at the time of pouring, but if they had that fan in there I dont believe it was more than a few hours. At this point its probably too late :) but overall I think/hope its fine. It was curing for several days before cabinets went in and even know 1 or 2 feel may be touching new concrete. It is what it is.
 
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