Bathroom Plumbing Vent

[wewiserangers]

Working on finishing up my shop which has a full bathroom with shower in the corner along with a utility sink in the shop area.

I will be adding a bath fan which I will exhaust out the sidewall. I was planning on running the stack vent out the side wall also but I'm not certain what to use to terminate it outside other than maybe a elbow with a screen insert.

I don't want it to look like a hack job. I know its not code but no inspections here, it's away from any windows and we are very distant from nearby homes.

 

[The Cobbler]

typically they exit on a 45 and straight up, no elbows & no screens on the top

 

[drmarkr]

My stack vent goes straight out the side wall. No elbows nor screens. My bath vent is a wall vent with sprung damper.

They're both on the back of the shop, so aesthetics are of no concern.

If you haven't installed the fan yet, I suggest using a high CFM model. It pulls more cool/warm air from the shop into the bathroom (which in my case doesn't have HVAC ducting) to make it more comfortable when you're on the throne.

 

[firebirdparts]

OP you used the word "fan" and the phrase "stack vent" in the same post, and now people don't know what you're trying to do.

 

[carlaisle]

A plumbing vent does not require any type of termination.

 

[karoc]

Good question and good answers. I will also be stubbing out vent through gable wall and not out through metal roof. Myself going turn my vent down with 90 just keep dang pine needles out. How in heck does pine needle hit 2” hole? They do.

 

[jblnut]

And here I came expecting a rant about bathroom plumbing. I’m quite disappointed. Not at all a venting thread about plumbing.

The vent stack in my farm shop goes into the attic, takes a 90, goes 10’, takes another 90 and points down into a 5gal bucket. I check it every year and it’s been 5yrs of dry pails and no other noticeable evidence it’s there other than a pipe.

I don’t have a fart fan. What doesn’t get taken care of with a can of Fabreeze lingers and falls to the ground.

 

[Sturgeon]

Jblnut Interesting, what are you expecting to see out of vent?

 

[jack stand]

@jblnut
I think whoever explained the function of a vent to you was playing a joke on you with the bucket.
Now you do know about the board stretcher right?

 

[jblnut]

Jblnut Interesting, what are you expecting to see out of vent?

It was a Pops thing lol. He says “you can’t do that !! What if it drips !?!?” “A vent is for incoming air you ****, not for drips or stuff leaving !!” It was easier to put a bucket by it and I check it to show him that guess what ? It’s still dry !!

@jblnut
I think whoever explained the function of a vent to you was playing a joke on you with the bucket.
Now you do know about the board stretcher right?

I have a board stretcher. Hook it to one end and the other end to the stump the board came from and pull. That board will get longer, maybe not for long, but it’ll be longer for a little while !!

 

[Sturgeon]

Is that like a pipe stretcher ?

 

[finn]

If you vent the plumbing out the wall, be cognizant of the prevailing wind.

I did one out the west wall with no issues, but this isn’t the Great Plains, either.

The PO had it running to the ridge vent, which I heard is common to avoid piercing steel roofs, but that seemed sketchy to me.

My current shop has a 4” pipe sticking out the ground, which again seems sketchy, but it works. I tightened the cap and the toilet wouldn’t flush. Drilled some holes and it worked fine for years. I’d guess that’s not to code, though.

All the stack does is act as an air admission point to allow the toilet to flush without creating a vacuum lock, at least the way I see it.. Sink islands often just have an air admittance valve to allow the drain to function without sucking the trap dry. Seems like a toilet would require more cross section area, though.

 

[Balvar24]

Typical to terminate them above the roofline so prevailing winds, etc. do not influence them.

As for termination direction, point it up. That way rain will enter and wasps will not.

 

[jubilee]

I put my two bathroom vents in the vanities and terminated them in the unfinished downstairs laundry room.
I suppose that violates a code some where, but sure was easy.

 

[jack stand]

The purpose of venting results in smooth efficient draining (no gurgling or burping) and no sewer gasses.
If your 2 vanity sinks (and plumbing) drains well and doesn't stink you've done good!

 

[firebirdparts]

Op was kinda one and done, I guess.

 

[CraigStu]

Our previous house had the vents for the 2nd floor baths run up to within maybe 2-3" of the roof ridge vents. House was 20 yrs old when we bought it and 25 when we sold it w/ no problems re; stack vents. I really like the idea vs holes in the roof w/ sealing rings around them integrated into the shingles. Because the house prior to that my wife said she heard what sounded like water running in the bathroom wall. I thought yeah right until I heard it to. Then I had to go onto the roof and replace that black plastic seal thing. I guess UV got it. I hope I never have to do that job again.