It's 3" ABS so it does not weigh that much. However, does no one make a
support system that installs within the wall (as opposed to supporting it
I know that I can wrap it with 'plumbers tape' and nail the tape ends to my
studs. Easy to do where you can get a bite because of a fitting. How about
mid-length? It would be easy if they made a 'glue-on' (ABS) quarter circle
with floppy straps that could be nailed to the studs.
Checked with both box stores and ACE. Nobody knows of a better way to
support stack than to simply wrap it tightly with the metal plumbers tape.
Any other ideas? Thanks god it isn't cast iron.
Use one of the rubber and hose clamp "fernco" type couplings to hold the
pipe. Put the plumbers tape under the hose clamps and on top of the
rubber section. Obviously slit the rubber section and undo the hose
clamps so you can assemble it on the pipe mid span.
If you are currently building this, then the easiest thing to do would
be to add a standard coupling where you need to support it. Then you
can wrap your plumber's tape tightly around the pipe just below the
If this is an existing stack, you can still achieve the same effect:
Take a standard ABS coupling and cut it half lengthwise. Remove the
stop from each piece any way that you like (including just cutting
each piece shorter right next to the stop). Now you can cement the
two pieces onto the vent stack wherever you need to support it.
If you split the coupling, it will be difficult to get enough pressure for
the ABS cement to soften both pipe and coupling to achieve a good bond
without tightening a couple of gear pipe clamps around the split halves.
Just leave the gear clamps on the couplings to assure that they don't move.
Another simpler method is to skip the coupling, and just use a couple of
gear clamps around the pipe and run the perforated metal strapping under the
clamps on both sides and bending the strap up where it appears under the
last clamp. This way you avoid slippage.
I do not know where they can be obtained now, but 3" pipe supports
definitely used to exist. You could get them for fastening to the plates or
the studs. Check in the places that carry gas furnace vent pipes if you
can't find them at plumbing suppliers.
Put a standard coupler or fitting where the stack exits the wall
cavity through the top plate. Assuming your holes are pretty tight
and true, there's no way it can fall down. Caution though...make sure
you support the pipe the full cure time...other wise it will back out
of the fitting.
I hadb a plumber recently replace all the bath plumbing from basement
to just below roof. all is now plastic except above attic level.
he used pre made hangers, to support the weight.
this plumbing stack had troubles every 5 to 10 years since i moved
here in 1972, i hope it ends the leaks. a real PIA with the kitchen
cieling coming down repeatedly. every neighbor has the same problem.
I used a plumber wanting the problem gone permanetely
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