Can I Leave PVC DWV/Standpipe Exposed? - Plumbing - DIY Home Improvement | DIYChatroom

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Old 03-27-2010, 03:54 PM   #1
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Can I leave PVC DWV/Standpipe exposed?

Got a permit yesterday to install a new standpipe and vent for my washer. Went to work on it last night, and discovered that the external walls of my basement are just finished with 2x2s and wood paneling.

Obviously not going to run 2" PVC through that. So, like a lot of the jobs I seem to start around here, I'm stuck between the "right" thing (building a proper wall) and the easy thing (running my pvc outside the wall).

SO, my question is whether I can legally run the PVC on the outside of the wall/paneling, or if I need to break down and do it right?

Got a new washer coming in 2 wks, so need to have something done by then. My concern with building a wall is that I'll end up needing to re-run the water lines and electric in addition to the dwv, and the cost of the "easy" project goes up considerably.




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Old 03-27-2010, 04:13 PM   #2
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No problem leaving it exposed. Most people want them in the wall, but sometimes it's just not possible. Code requirements for washer standpipe...

2" minimum drain and trap/ trap arm / tailpiece
trap must be roughed in above the floor not less than 6 inches and no more than 12 inches.

Washer standpipe may not be less than 18 inches and no more than 30 inches.

Remember, vent comes off the top of the trap arm.

Good luck


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