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Thread: basement bathroom

  1. #1
    DIY Junior Member darrski's Avatar
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    Default basement bathroom

    Hello guys...

    New to the forums....hello from Canada
    With 3 ladies in the house I'm forced to build me a bath in the basement...2 teenage daughters do very good job making the 2 upstairs baths unavailable most of the time lol.
    Problem is , that I have no access in the basement to main vent without ripping few wall upstairs apart .
    Would the AAV's be O.K to use in my set-up ?
    Thinking about using Studor MAXI for the toilet and MINI for tub/shower and sink .
    Drawing is not the best , but I hope you guys can figure it out .
    Thanks
    Derek



  2. #2
    DIY Senior Member dlarrivee's Avatar
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    You'd need to attach the vent for the bathroom group ABOVE the fixtures draining into the stack on the floor above anyways. Can you not sneak a vent inside an upstairs wall and tie into the vent stack inside the attic?

  3. #3
    DIY Junior Member darrski's Avatar
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    Hi

    Nope...not without taking some walls apart upstairs

    I know AAVs are not the best way to go...but looks like they might be my only option

  4. #4
    DIY Senior Member dlarrivee's Avatar
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    Quote Originally Posted by darrski View Post
    Hi

    Nope...not without taking some walls apart upstairs

    I know AAVs are not the best way to go...but looks like they might be my only option
    Why would you need to take the walls apart? Does the main stack not come up inside an interior wall itself?

  5. #5
    DIY Junior Member darrski's Avatar
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    Quote Originally Posted by dlarrivee View Post
    You'd need to attach the vent for the bathroom group ABOVE the fixtures draining into the stack on the floor above anyways.
    Soooo...even the AAVs won't work in this set-up ?

  6. #6
    DIY Senior Member dlarrivee's Avatar
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    Quote Originally Posted by darrski View Post
    Soooo...even the AAVs won't work in this set-up ?
    AAVs are another story. I'm talking about a proper dry vent that a plumber would prefer to install.

  7. #7
    DIY Junior Member darrski's Avatar
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    Quote Originally Posted by dlarrivee View Post
    Why would you need to take the walls apart? Does the main stack not come up inside an interior wall itself?
    The only thing , that I have access to is the main drain pipe...It's a split level house and not really easy way to go straight up to the attic

  8. #8
    DIY Junior Member darrski's Avatar
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    Quote Originally Posted by dlarrivee View Post
    AAVs are another story. I'm talking about a proper dry vent that a plumber would prefer to install.
    I had a plumber come in ....he just looked at it ....and said that it might be a pain in the a.... to get it done properly ...it was his suggestion to use AAVs...
    Least expansive quote for rough in this bath was $1000....that's why I'm trying to do it myself lol
    Last edited by darrski; 11-29-2009 at 01:49 PM.

  9. #9
    DIY Senior Member dlarrivee's Avatar
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    If I hired a pro to rough in my bathroom and he wanted to install an AAV after 10 minutes of looking at it, I'd probably get a second opinion.

  10. #10
    DIY Junior Member darrski's Avatar
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    Hey...

    O.K...desperate times call for desperate measures lol...took part of the ceiling out in a laundry room next to the planned bathroom...should see how happy my wife was lol . This room is directly under bath upstairs - so I got to see some of the plumbing . I might have a chance to tap into main vent...what do you think ?




  11. #11
    Plumber krow's Avatar
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    I'm not aware of AVV's being code compliant anywhere in Canada.. You could be opening a can of worms if you decide to go that route.

    I have heard of water bubbeling up in basins, sinks , traps when a toilet has been flushed at another end of the house. (of course the conditions have to be right....... or wrong, depending on how you look at it) All it needs to fail, is a large volume of water to go down the drain. ie toilet flushing

    a proper vent will allow that particular plumbing group to breath air in and out of the system.

    The tapping that you are displaying in the drawing needs to be above the lowest fixture's flood level rim. In aother words, it needs to be connected on the upper floor where that bathroom group is.
    Last edited by krow; 11-29-2009 at 02:46 PM.

  12. #12
    DIY Junior Member darrski's Avatar
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    Hey
    I did check Ontario building code and they have section on AAVs...they are allowed..I know they are not the best solution....might the easiest thou lol

  13. #13
    Plumber krow's Avatar
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    Quote Originally Posted by darrski View Post
    Hey
    I did check Ontario building code and they have section on AAVs...they are allowed..I know they are not the best solution....might the easiest thou lol
    Well, the inpectors that I meet up with want them out.
    They are allowed in cottage country ( I don't consider it part of Canada, lmao) , but not in any city or town that I have ever worked in

  14. #14
    DIY Senior Member dlarrivee's Avatar
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    If you go up into the attic, and you see that vent stack, can you not drill a 2 1/4" hole in the stud bay adjacent to that stack and inspect with a flashlight what is inside that stud cavity, and pipe a vent up inside that cavity if the coast is clear.

    I don't understand how you expect to tie the venting in with that diagram, it needs to be done above the fixtures in the bathroom upstairs.

    Does that stack not come up inside an interior wall?

  15. #15
    DIY Junior Member darrski's Avatar
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    Hey

    Don't really want to damage any more ceiling in the next room lol
    Can I get away with drilling the next hole for the basement stack 6" away from the main stack - and then tapping to it in the attic ? This way I can stay within the same stud bay ...and less patch work for ceiling repairs in laundry room lol..and there is good chance that there won't be anything in the way if I stay close to the main stack .
    I can run the new stack along the floor joist to the new bathroom from the laundry room.
    Do you think that might work ?

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