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smell on patio possible vent solution?

  • 07-08-2023 11:35am
    Registered Users Posts: 91 ✭✭

    Hey folks,

    I'm wondering if any of the more knowledgeable here could help me out with a sewage smell.

    We bought an old house that has its grey and black lines running into one, which I know isn't great, but not a lot we can (afford to) do about that. The main issue we have is both toilets are draining out the same side of the house which also has a patio. There's a smell of sewage hanging around a lot of the time coming form both drain covers that cover the drain to the septic tank.

    We just had a bathroom redone and one of the guys doing it up looked at the drains, nothing wrong with them, its just that its not vented anywhere along it.

    That's the pipe he suggested we vent (the down pipe goes to a drain which runs under the patio to the right where another bathroom and the kitchen sink drain into it before it heads off to the tank). He suggested cutting the section that runs parallel to the ground, adding a joint pointing upwards to connect to a standard rain gutter pipe running to above roof level with a rain cap on the end would do the trick to vent the smell and stop it from stinking up the patio.

    Does that make sense? Its a royal pain when we can have the possibility to eat outside not being able to because of the smell.


  • Registered Users Posts: 4,239 ✭✭✭blackbox

    You would need to vent it above the upstairs windows or well away from them.

    The simplest break in would be to replace the elbow with a tee, but you will need to route it around the gutter.