How to install an upflush toilet. Find tips and information on planning and running drain and vent lines, basic carpentry skills, connecting pipes, and more. From DIY Advice.
Installing a new bathroom in a basement can be a major undertaking. The concrete floor must be broken into and drainpipes installed, then new concrete must be poured.
An upflushing unit makes the job much easier. Instead of using gravity to drain, it has an electric pump that efficiently discharges waste up and away. A GFCI receptacle must be installed nearby.
Upflushing units usually are installed under or near the toilet. Most can serve a sink and a tub as well.
Some upflushing units, especially those installed in the '70s and '80s, were unreliable and needed frequent repairs. Newer units are more dependable. Ask a plumbing supplier about the track record of the model you are considering. Make sure the unit's pump is powerful enough to send wastewater the required distance to the house?s drain.
Level, adjustable wrench, PVC saw, deburring tool, screwdriver, carpentry tools
Planning and running drain and vent lines, basic carpentry skills
Purchase a unit, draw a plan, and consult with a plumbing inspector to make sure the plumbing will meet code
Upflushing unit, PVC pipe and fittings, primer, cement, toilet
This unit is designed to fit between 2x6 joists. It must rest on a stable, fairly level surface. If necessary, build a simple 2x2 frame, mix and pour sand-mix hydraulic concrete, and set the unit in the concrete. Level in both directions. Allow the concrete to cure before proceeding.
Connect the discharge to a drainpipe leading to a bucket or floor drain. Tape the temporary drainpipe joints -- the pump is forceful. Plug the unit into a GFCI receptacle. Slowly fill the tank with water. The pump should come on and discharge water once it reaches the correct level.
Connect the discharge pipe to the backflow device to ensure that wastewater will not flow back into the unit. (Be sure to install it with the correct end up -- it is clearly marked.) Connect a 2-inch PVC drainpipe to the discharge unit and run it toward the house's drain in a code-approved manner.