Drew Morrison
New Member
Hello,
I'm new to the forum and looking for advice on a 3rd floor bath remodel. I have plumbed some sinks and a laundry drain, but this the most complex project so far.
This is a second bathroom using the main cast iron 'stack' in our home. I have access to a crawl space overhead (a small one but navigable, it's a Mansard Roof).
The previous owner hired someone who did not ad venting for any of the fixtures. I am confused if they were being lazy, or if they considered the stack to be providing venting for the tub, sink and toilet.
My setup will have a double sink, shower pan and toilet. I am hoping to move the toilet on the other side of the room (it was previously next to the stack). This will land the drain at 6'6" away, using 3" I believe this falls within code as long as the pitch is correct.
Please see attached image for my venting idea, which would involve creating a new 2" vent through the roof.
I have read that it's best to transition to a 3" at the roof, to avoid freezing in winter.
Any advice or pointers would be much appreciated!
Thanks,
Drew
I'm new to the forum and looking for advice on a 3rd floor bath remodel. I have plumbed some sinks and a laundry drain, but this the most complex project so far.
This is a second bathroom using the main cast iron 'stack' in our home. I have access to a crawl space overhead (a small one but navigable, it's a Mansard Roof).
The previous owner hired someone who did not ad venting for any of the fixtures. I am confused if they were being lazy, or if they considered the stack to be providing venting for the tub, sink and toilet.
My setup will have a double sink, shower pan and toilet. I am hoping to move the toilet on the other side of the room (it was previously next to the stack). This will land the drain at 6'6" away, using 3" I believe this falls within code as long as the pitch is correct.
Please see attached image for my venting idea, which would involve creating a new 2" vent through the roof.
I have read that it's best to transition to a 3" at the roof, to avoid freezing in winter.
Any advice or pointers would be much appreciated!
Thanks,
Drew