Moving/reconnecting washing machine


Old 07-03-15, 06:30 PM
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Moving/reconnecting washing machine

I am moving my washer and wanted to know if I could run my vent stack outside of my house and not go through the roof. My hookups would be 30" to the p trap then a 10 " arm to an elbow through the floor to the outside. Drop 8" to another elbow away from the house and then put a vent on continuing to a grey water discharge. Thanks for any help.
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Old 07-04-15, 06:53 AM
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I would not run a vent outside a house, merely for aesthetic reasons. You may be able to install a studor type air admittance valve, depending on location. You can't send a vent back down through the floor.
Old 07-07-15, 12:02 PM
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You can't drop vertically before the vent. Otherwise the vent loses its purpose for being there as you're basically creating an 'S' trap.

There's no code-based reason that you can't run the vent pipe up the outside of your house, but as Larry mentioned, it's rarely done on houses as it looks funny.
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