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Old 11-18-2009, 10:15 AM   #1
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Toiler vent around a corner


I bought a 105 year old house 5 years ago. The house was updated in 1992 with new electric and plumbing. I am now remodeling the bathroom and trying to understand the venting system. I am moving the toilet during the remodeling. The house is on pier and beam with good access and I can see the details in the crawl space. The venting or lack of venting is difficult to understand. I will know much more when I open the walls after Thanksgiving. However I know I will need to run a new vent for the toilet. There is a vent stack on the opposite wall to where the new toilet will be and I may have to run a 2 vent, at least 42 above floor level, to that stack. I cannot go over head due to an attic room above the bathroom. That leaves two possible options; make two 90 degree turns in the wall at the corners or building an overhead soffit to run the vent. Due to my labor and material cost I would prefer the 90 degree approach but have no idea how to run a 2 PVC pipe around a corner without possibly damaging the integrity of the wall. One of the corners is stress bearing because it was originally an outside wall. I am removing all the sheetrock and will have complete access to the wall interior.
Any suggestions would be appreciated.
Thanks in advance.
Lonny

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Old 11-18-2009, 10:18 AM   #2
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Toiler vent around a corner


if you are adding a soffit go though the soffit. Or you need to build the walls thicker. To keep a turn tight to a corner you 90 up then 90 across. Both turns are now in the wall and this will not effect the air pressure needed to make an adequate vent.

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Old 11-19-2009, 10:35 AM   #3
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Toiler vent around a corner


How far from the main soil stack will the toilet be after it's moved? Depending on the answer and/or the applicable code where you live, the toilet may not need a separate vent at all.
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