I have a guest bathroom with the sink not draining
(the tub/shower are on the horizontal/lateral run
of drain pipe as the sink, and the sink is
downstream of the tub (as you can tell by my
terminology, I am not a plumber).
Anyway, the tub drains fine, but the sink won't (I
have removed the trap and hand snaked the drain,
but it stops dead about where the 2" vertical
drain pipe meets the lateral. Now I know the
lateral pipe is clear as the tub drains through it
I went to the roof and tried hand snaking the vent
pipe (which is the vertical line for the sink) and
it too stops dead about where it joins the
lateral. I ran a hose in the roof vent, and the
water backed up in the sink, so it would appear
the blockage has to be below the sink inlet into
the vertical pipe, but above the lateral line.
Now here is my puzzle -- the sink has a strainer
on it which would prevent any large object from
going down the drain.
It is a 70 year-old house with iron and galvanized
drain pipe in this section of the house.
Is it possible that it just rusted closed, or is
it possible for a squirrel to have dropped a nut
or something down the vent pipe and it lodged in
the pipe (I do have squirrels on the roof as they
jump to and from my avocado tree?
The tool rental store is closed today, but my
thinking is to rent a 2" snake with a cutter head
and feed it down from the roof, but I have a clay
tile roof, and I hate to drag any equipment up
there and break the tiles. It is a tight fit to
try and snake from the sink as it is a pedestal
sink grouted to the tile floor, and I hate to
disturb all that.
There is no good way to snake up from the lateral
drain pipe, but I suppose I could try drilling the
junction directly below where the vertical pipe
joins it, and snake from below (pretty heavy iron
"T" junction there to drill through, though)
Well, I would appreciate any advice you may have
(maybe I just should call a plumber, but I
normally am a handy guy and do my own plumbing,
electrical, carpentry, etc.).