I have a split-entry ranch home, which means that the ground floor varies
from ground level to about 3 feet below ground level. Ever since I
installed a toilet on the ground level on an existing waste system setup
there has been a tendency for the toilet to either back up or go down slowly
if it's flushed when the washing machine is on, or for awhile after it shuts
off. The washing machine drain pipe is located a few feet downstream of the
toilet. I've had the waste line Roto-Rootered several times all the way out
to the sewer connection at the street, each time resulting in a slight, but
temporary improvement. The Roto-Rooter guys have told me that there were no
significant blockages but that there might be a slight kink in the line
under my front yard, resulting in a section of the line actually pitching
upward. This would be extremely expensive to fix so I'd like to avoid it if
possible. Would an upflow toilet help? Any advice you can provide would be
Let me correct an inaccuracy in my message. The washing machine is about 4
feet away from the toilet but its drain pipe goes into the ground right
behind the toilet, so the wastewater from both probably meet only a short
distance from the toilet.
I saw the hole in the floor and I just put on a wax ring and set it down and
connected the water supply. I thought that the existing venting would take
care of it since the new toilet dumps into the same waste pipe as the
upstairs toilet. Maybe I should just have a plumber look over the whole
setup, which is completely out in the open on the other side of the wall,
which is the furnace room. Several Roto-Rooter guys looked at it and didn't
say that anything was wrong. Not meaning to be too cynical, but maybe the
Roto-Rooter guys just wanted to be able to keep coming back!
I've timed the upstairs and downstairs toilets, and even when there's no
conflict with the washing machine, the downstairs toilet consistently takes
4 seconds longer to empty the bowl than the upstairs toilet. (They both
have 1.6 gallon flushes.) Does that pretty much prove the theory about the
Sounds like you installed your toilet over a floor drain which means the toilet
now double trapped. This will never work right. The toilet needs 3" minimum
line that is vented but not trapped.
I thought that the existing venting would take
The house was new at the time. The hole was all set up with a toilet
flange, etc., so I assumed that the builder vented it. I'll have to sort
through the maze of 2", 3" and 4" pipes on the other side of the wall to
figure out if it's actually vented properly.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.