--===============1442058512963791306==
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I'd still suspect your roof vent. Only time we ever had a vent problem it
was caused by animals trying to nest in or on the roof vent. The plumber
we were working with insisted that he could not cover the vent pipe with
any sort of protector. So after he left I made a wire cage box out of
stainless hardware cloth and never had another issue in the remaining 10
years we lived in that house. I made the cage significantly larger than
the vent pipe. I think it was about a 2.5" vent and there was at least 3"
or air space inside the cage on all sides. I put a small piece of sheet
metal on the top of the cage directly over the vent pipe to keep any debris
out of the pipe should birds or other critters decide to nest on top of the
cage. When we sold the house the home inspector flagged that as not being
to code, so I removed it and left it in the garage with a note for the
buyer.
On Mon, Dec 7, 2020 at 7:26 AM Jim Franklin <jamesf@groupwbench.org> wrote:
> Maybe some of you have an innovative solution...
>
> My house has a single cast iron soil stack that does both drain and vent.
> When I flush the toilet, it sucks air from the tub drain. The toilet and
> tub enter the stack separately, but at the same height, using an oddly
> specific T with a 4" toilet and a 2" tub inlet about 45 degrees apart. The
> tub does not have its own vent. 2 years ago I had a plumber snake the vent
> from the roof, he found "stuff", and it was fixed. Last week it started
> again.
>
> My kitchen sink T's into the stack at knee height, so it's the highest
> item on the stack. My thought is, because it's a straight T, not a sanitary
> T, stuff from the sink is solidifying inside the T when the flow hits the
> back of the T, and eventually forming a cap of "stuff" just above the T
> entry, sealing off any venting. I can't tell if the sink is also being used
> as the toilet's vent because there are too many walls in the way to hear
> what's happening.
>
> My other thought is that the "stuff" is growing like a mold, and sealing
> it off. Does stuff grow in drains?
>
> Any thoughts on what it might be, and how to prevent it? I rarely put oils
> down the drain, and when I do they are cold and mixed with Dawn to emulsify
> it. There isn't enough canopy for leaves or squirrels to get in the roof
> vent.
>
> thanks,
> jim
> _______________________________________________
>
> Shop-talk@autox.team.net
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>
--
=================================
= Never offend people with style when you =
= can offend with substance --- Sam Brown =
=================================
--000000000000aeca1805b5e012c1
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">I'd still suspect your roof vent.=C2=A0 Only time we e=
ver had a vent problem it was caused by animals trying to nest in or on the=
roof vent.=C2=A0 The plumber we were working with insisted that he could n=
ot cover the vent pipe with any sort of protector.=C2=A0 So after he left I=
made a wire cage box out of stainless hardware cloth and never had another=
issue in the remaining 10 years we lived in that house.=C2=A0 I made the c=
age significantly larger than the vent pipe.=C2=A0 I think it was about a 2=
.5" vent and there was at least 3" or air space inside the cage o=
n all sides.=C2=A0 I put a small piece of sheet metal on the top of the cag=
e directly over the vent pipe to keep any debris out of the pipe should bir=
ds or other critters decide to nest on top of the cage.=C2=A0 When we sold =
the house the home inspector flagged that as not being to code, so I remove=
d it and left it in the garage with a note for the buyer.<br></div><br><div=
class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Mon, Dec 7,=
2020 at 7:26 AM Jim Franklin <<a href=3D"mailto:jamesf@groupwbench.org"=
>jamesf@groupwbench.org</a>> wrote:<br></div><blockquote class=3D"gmail_=
quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,=
204);padding-left:1ex">Maybe some of you have an innovative solution...<br>
<br>
My house has a single cast iron soil stack that does both drain and vent. W=
hen I flush the toilet, it sucks air from the tub drain. The toilet and tub=
enter the stack separately, but at the same height, using an oddly specifi=
c T with a 4" toilet and a 2" tub inlet about 45 degrees apart. T=
he tub does not have its own vent. 2 years ago I had a plumber snake the ve=
nt from the roof, he found "stuff", and it was fixed. Last week i=
t started again.<br>
<br>
My kitchen sink T's into the stack at knee height, so it's the high=
est item on the stack. My thought is, because it's a straight T, not a =
sanitary T, stuff from the sink is solidifying inside the T when the flow h=
its the back of the T, and eventually forming a cap of "stuff" ju=
st above the T entry, sealing off any venting. I can't tell if the sink=
is also being used as the toilet's vent because there are too many wal=
ls in the way to hear what's happening. <br>
<br>
My other thought is that the "stuff" is growing like a mold, and =
sealing it off. Does stuff grow in drains? <br>
<br>
Any thoughts on what it might be, and how to prevent it? I rarely put oils =
down the drain, and when I do they are cold and mixed with Dawn to emulsify=
it. There isn't enough canopy for leaves or squirrels to get in the ro=
of vent. <br>
<br>
thanks,<br>
jim<br>
_______________________________________________<br>
<br>
<a href=3D"mailto:Shop-talk@autox.team.net"; target=3D"_blank">Shop-talk@aut=
ox.team.net</a><br>
et=3D"_blank">http://www.team.net/donate.html</a><br>
Archive: <a href=3D"http://www.team.net/pipermail/shop-talk"; rel=3D"norefer=
rer" target=3D"_blank">http://www.team.net/pipermail/shop-talk</a> <a href=
=3D"http://autox.team.net/archive"; rel=3D"noreferrer" target=3D"_blank">htt=
p://autox.team.net/archive</a><br>
<br>
alk/jdinnis@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://autox.te=
am.net/mailman/options/shop-talk/jdinnis@gmail.com</a><br>
<br>
</blockquote></div><br clear=3D"all"><br>-- <br><div dir=3D"ltr" class=3D"g=
mail_signature">=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br>=3D Never offend people with =
style when you=C2=A0=C2=A0 =3D<br>=3D can offend with substance --- Sam Bro=
wn=C2=A0 =3D<br>=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</div>
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Shop-talk@autox.team.net
Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/archive
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