Some of the older low water toilets used a power flush that could be heard
miles away. New ones are the same noise level as the old five gallon
models. There are a few good ones available from all the companies now.
There are some low flow toilets that have a pressurized tank in them
with a bladder or diaphram that stores the water utilizing the 40-50
pounds of pressure in the domestic water supply to give them a boost.
Those are pretty noisy when they flush.
re: "I might want a toilet down there someday in the distant future
when my kids are teenagers or something."
I don't know how many teenagers you plan on having, but for a while I
When we moved in we had a full bath on the 2nd floor and a very, very
rough toilet & shower in the basement. Slab floor, crooked 2 x 2 open
stud walls, etc. The wife wouldn't even use it.
I gutted it and put in a new toilet, shower stall and sink.
With 6 people, 2 bathrooms were barely enough. I sure wish we had room
for a powder room on the 1st floor.
I managed to find a friebie taker for one high flow toilet. He had a cabin with
a well and didn't care. Two others I gave up and broke them up with a
sledgehammer, and disposed of them in the garbage. Not a high demand item.
You can get rubber plugs in a variety of diameters at HD or Lowes.
They have a bolt thru the middle and you tighten it to expand the plug
until it is tight. All you need is a fairly smooth inside surface on
the location where the plug will be installed as it can expand about
1/2 inch for a 3 or 4 inch diameter when tightened down all the way.
You definitely need to leave the capability to reinstall a toilet in
the future as it is a big selling point.
A decent plug should last for many, many years.
Here's a tip to check the plug:
After you install the plug, lay some toilet paper on the floor with
the ends just covering the seam between the plug and the flange. Then
have someone flush one of the upstairs toilets. If the toilet paper
doesn't move, then odds are you have no air leakage.
I'd go with a gasketed bolt-down lid, that is fitted to the flange just
like a toilet is. If borg doesn't have them, a real plumbing supply
will. Or just fabricate one from thick sheet metal, and install it over
a fresh non-wax toilet ring tall enough to make a good seal. Yeah,
inflated rubber will rot at some point, and you will get sewer smells
(or worse, backups), in the basement. I've even seen it done with a
layer of rubber gasket material from auto parts store, and bolted-down
disc of plywood. Not like it has to stand a lot of pressure or anything.
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